someone can tell me why my app can't run in anroid13? - Android Q&A, Help & Troubleshooting

the app can run in huawei nova5zd, OS is HarmonyOS 2.0.0, but can't run in pixel4xl, android 13, showing "no permission", the main code is
Java:
public class TestLocationActivity extends AppCompatActivity {
public static final int LOCATION_CODE = 301;
public static final String TAG = "TestLocationActivity:wp";
private LocationManager locationManager;
private String locationProvider = null;
com.adan.gpsdemo.databinding.ActivityTestBinding activityTestBinding;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activityTestBinding = ActivityTestBinding.inflate(getLayoutInflater());
setContentView(activityTestBinding.getRoot());
getLocation();
}
private void getLocation(){
//1.获取位置管理器
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
//2.获取位置提供器,GPS或是NetWork
List<String> providers = locationManager.getProviders(true);
if (providers.contains(LocationManager.GPS_PROVIDER)) {
//如果是GPS
locationProvider = LocationManager.GPS_PROVIDER;
Log.v(TAG, "定位方式GPS");
} else if (providers.contains(LocationManager.NETWORK_PROVIDER)) {
//如果是Network
locationProvider = LocationManager.NETWORK_PROVIDER;
Log.v(TAG, "定位方式Network");
}else {
Toast.makeText(this, "没有可用的位置提供器", Toast.LENGTH_SHORT).show();
return;
}
if (Build.VERSION_CODES.M <= Build.VERSION.SDK_INT) {
//获取权限(如果没有开启权限,会弹出对话框,询问是否开启权限)
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED ||
ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
//请求权限
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION}, LOCATION_CODE);
} else {
//3.获取上次的位置,一般第一次运行,此值为null
Location location = locationManager.getLastKnownLocation(locationProvider);
if (location!=null){
// notice textview change
showGPSValue(location.getLongitude(),location.getLatitude());
Log.v(TAG, "获取上次的位置-经纬度:"+location.getLongitude()+" "+location.getLatitude());
getAddress(location);
}else{
//监视地理位置变化,第二个和第三个参数分别为更新的最短时间minTime和最短距离minDistace
locationManager.requestLocationUpdates(locationProvider, 3000, 1,locationListener);
}
}
} else {
Location location = locationManager.getLastKnownLocation(locationProvider);
if (location!=null){
showGPSValue(location.getLongitude(),location.getLatitude());
Log.v(TAG, "获取上次的位置-经纬度:"+location.getLongitude()+" "+location.getLatitude());
getAddress(location);
}else{
//监视地理位置变化,第二个和第三个参数分别为更新的最短时间minTime和最短距离minDistace
locationManager.requestLocationUpdates(locationProvider, 3000, 1,locationListener);
}
}
}
@SuppressLint("SetTextI18n")
private void showGPSValue(double longitude, double latitude){
new Thread(()->{
// 39.951111, 75.172778 change to 75°10'22''E,39°57'04''N
int hour = (int) longitude;
double minute = getDecimalValue(longitude) * 60;
double second = getDecimalValue(minute) * 60;
int hour_lat = (int) latitude;
double minute_lat = getDecimalValue(latitude) * 60;
double second_lat = getDecimalValue(minute_lat) * 60;
String strLong = hour + "°" + (int)minute + "'" + (int)second + "\"";
String strLat = hour_lat + "°" + (int)minute_lat + "'" + (int)second_lat + "\"";
Log.i(TAG,"longitude:" + strLong);
Log.i(TAG,"latitude:" + strLat);
activityTestBinding.tvGpsValue.setText(strLong + "E," + strLat + "N");
}).start();
}
/**
* get decimal of a value
* @param value double include int and decimal
* @return decimal of value
*/
private double getDecimalValue(double value){
long longPart = (long) value;
BigDecimal bigDecimal = new BigDecimal(Double.toString(value));
BigDecimal bigDecimalLongPart = new BigDecimal(Double.toString(longPart));
double dPoint = bigDecimal.subtract(bigDecimalLongPart).doubleValue();
Log.i(TAG,"DecimalValue:" + dPoint);
return dPoint;
}
public LocationListener locationListener;
{
locationListener = new LocationListener() {
// Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数
@SuppressWarnings("deprecation")
@Contract(pure = true)
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
// Provider被enable时触发此函数,比如GPS被打开
@Override
public void onProviderEnabled(String provider) {
}
// Provider被disable时触发此函数,比如GPS被关闭
@Override
public void onProviderDisabled(String provider) {
}
//当坐标改变时触发此函数,如果Provider传进相同的坐标,它就不会被触发
@Override
public void onLocationChanged(Location location) {
if (location != null) {
//如果位置发生变化,重新显示地理位置经纬度
showGPSValue(location.getLongitude(),location.getLatitude());
Log.v(TAG, "监视地理位置变化-经纬度:" + location.getLongitude() + " " + location.getLatitude());
}
}
};
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == LOCATION_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED
&& grantResults[1] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, "申请权限", Toast.LENGTH_LONG).show();
try {
List<String> providers = locationManager.getProviders(true);
if (providers.contains(LocationManager.NETWORK_PROVIDER)) {
//如果是Network
locationProvider = LocationManager.NETWORK_PROVIDER;
} else if (providers.contains(LocationManager.GPS_PROVIDER)) {
//如果是GPS
locationProvider = LocationManager.GPS_PROVIDER;
}
Location location = locationManager.getLastKnownLocation(locationProvider);
if (location != null) {
showGPSValue(location.getLongitude(),location.getLatitude());
Log.v("TAG", "获取上次的位置-经纬度:" + location.getLongitude() + " " + location.getLatitude());
} else {
// 监视地理位置变化,第二个和第三个参数分别为更新的最短时间minTime和最短距离minDistace
locationManager.requestLocationUpdates(locationProvider, 0, 0, locationListener);
}
} catch (SecurityException e) {
e.printStackTrace();
}
} else {
Toast.makeText(this, "缺少权限", Toast.LENGTH_LONG).show();
finish();
}
} else {
throw new IllegalStateException("Unexpected value: " + requestCode);
}
}
//获取地址信息:城市、街道等信息
private void getAddress(Location location) {
List<Address> result;
try {
if (location != null) {
Geocoder gc = new Geocoder(this, Locale.getDefault());
result = gc.getFromLocation(location.getLatitude(),
location.getLongitude(), 1);
new Thread(()->{
String addValue = result.toString();
activityTestBinding.tvAddressValue.setText(addValue);
}).start();
Log.v(TAG, "获取地址信息:"+ result);
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
locationManager.removeUpdates(locationListener);
}
}
Click to expand...
Click to collapse
XML:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:ignore="ExtraText">
<!-- 粗略的位置权限 -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <!-- 精确的位置权限 -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.GPSDemo">
<activity
android:name=".TestFusedLocationProviderClientActivity"
android:exported="true">
<!-- <meta-data-->
<!-- android:name="android.app.lib_name"-->
<!-- android:value="" />-->
</activity>
<activity android:name=".MainActivity"></activity>
<activity android:name=".TestGPS2"></activity>
<activity android:name=".TestLocationActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Test1" />
<activity android:name=".Test2" />
</application>
</manifest>
whloe code is
GitHub - yhm2046/GPSDemo: test gps
test gps. Contribute to yhm2046/GPSDemo development by creating an account on GitHub.
github.com

mm11751 said:
the app can run in huawei nova5zd, OS is HarmonyOS 2.0.0, but can't run in pixel4xl, android 13, showing "no permission", the main code is
XML:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:ignore="ExtraText">
<!-- 粗略的位置权限 -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <!-- 精确的位置权限 -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.GPSDemo">
<activity
android:name=".TestFusedLocationProviderClientActivity"
android:exported="true">
<!-- <meta-data-->
<!-- android:name="android.app.lib_name"-->
<!-- android:value="" />-->
</activity>
<activity android:name=".MainActivity"></activity>
<activity android:name=".TestGPS2"></activity>
<activity android:name=".TestLocationActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Test1" />
<activity android:name=".Test2" />
</application>
</manifest>
whloe code is
GitHub - yhm2046/GPSDemo: test gps
test gps. Contribute to yhm2046/GPSDemo development by creating an account on GitHub.
github.com
Click to expand...
Click to collapse
Most likely because Android 13 includes behavior changes that may affect your app. The following behavior changes apply exclusively to apps that are targeting Android 13 or higher.
Privacy
Granular media permissions
Use of body sensors in the background requires new permission
Performance and battery
User experience
App color theme applied automatically to WebView content
Google Play services
Updated non-SDK restrictions

rodken said:
Most likely because Android 13 includes behavior changes that may affect your app. The following behavior changes apply exclusively to apps that are targeting Android 13 or higher.
Privacy
Granular media permissions
Use of body sensors in the background requires new permission
Performance and battery
User experience
App color theme applied automatically to WebView content
Google Play services
Updated non-SDK restrictions
Click to expand...
Click to collapse
I modify some code , but sitll don't work. Now how can I do ?
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

mm11751 said:
I modify some code , but sitll don't work. Now how can I do ?
Click to expand...
Click to collapse
Try API Level 33.

rodken said:
Try API Level 33.
Click to expand...
Click to collapse
I modified this code, still no work

mm11751 said:
I modified this code, still no work
Click to expand...
Click to collapse
Are you the developer of the app?

rodken said:
Are you the developer of the app?
Click to expand...
Click to collapse
yes, I wrote it

mm11751 said:
yes, I wrote it
Click to expand...
Click to collapse
You might want to redirect your question(s) to this forum to receive more than one insight on the issue.

Related

Huawei Share Kit Facilitates to Acquire Skill in Enforcement - Part 2

More articles like this, you can visit HUAWEI Developer Forum and Medium.
​https://forums.developer.huawei.com/forumPortal/en/home
In this article, We will implement the Huawei Share Kit SDK and complete our demo application.
In the previous article, we have learned about Share Kit introduction and created project. So let’s start our implementation.
I will represent the functionality of Share Kit in a simple way with a working application and give a demo.
Before start developing the application we must have the following requirement.
Hardware Requirements
1. A computer (desktop or laptop) that runs Windows 7 or Windows 10
2. A Huawei phone (with the USB cable), which is used for debugging
3. A third-party Android device, which is used for debugging
Software Requirements
1. JDK 1.8 or later
2. Android API (level 26 or higher)
3. EMUI 10.0 or later
Let’s start the development:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
1. Add Share Kit SDK in project:
2. We need to add the code repository to the project root directory gradle.
Code:
maven {
url 'http://developer.huawei.com/repo/'
}
3. We need to add the following dependencies in our app gradle.
Code:
dependencies {
implementation files('libs/sharekit-1.0.1.300.aar')
implementation 'com.android.support:support-annotations:28.0.0'
implementation 'com.android.support:localbroadcastmanager:28.0.0'
implementation 'com.android.support:support-compat:28.0.0'
implementation 'com.google.guava:guava:24.1-android'
}
Note: You need to raise a ticket to get Share Kit SDK “sharekit-1.0.300.aar” file
Click on the below link and raise your ticket.
https://developer.huawei.com/consumer/en/support/feedback/#/
4. I have created following package and resource file:
5. I have mentioned all activities in manifest file:
Code:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.hms.myshare">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".SplashScreen"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".SearchingActivity"
android:configChanges="orientation|keyboardHidden|screenSize"/>
<activity
android:name=".ReceiveActivity"
android:configChanges="orientation|keyboardHidden|screenSize"/>
</application>
</manifest>
Let’s create an awesome User Interface:
1. I have created a wave ripple effect which will help to find the device from a UI perspective.
I have created a SearchingView.java class:
Code:
public class SearchingView extends RelativeLayout {
private static final int DEFAULT_RIPPLE_COUNT=6;
private static final int DEFAULT_DURATION_TIME=3000;
private static final float DEFAULT_SCALE=6.0f;
private static final int DEFAULT_FILL_TYPE=0;
private int rippleColor;
private float rippleStrokeWidth;
private float rippleRadius;
private int rippleDurationTime;
private int rippleAmount;
private int rippleDelay;
private float rippleScale;
private int rippleType;
private Paint paint;
private boolean animationRunning=false;
private AnimatorSet animatorSet;
private ArrayList<Animator> animatorList;
private LayoutParams rippleParams;
private ArrayList<RippleView> rippleViewList=new ArrayList<RippleView>();
public SearchingView(Context context) {
super(context);
}
public SearchingView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public SearchingView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context, attrs);
}
private void init(final Context context, final AttributeSet attrs) {
if (isInEditMode())
return;
if (null == attrs) {
throw new IllegalArgumentException("Attributes should be provided to this view,");
}
final TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RippleBackground);
rippleColor=typedArray.getColor(R.styleable.RippleBackground_rb_color, getResources().getColor(R.color.rippelColor));
rippleStrokeWidth=typedArray.getDimension(R.styleable.RippleBackground_rb_strokeWidth, getResources().getDimension(R.dimen.rippleStrokeWidth));
rippleRadius=typedArray.getDimension(R.styleable.RippleBackground_rb_radius,getResources().getDimension(R.dimen.rippleRadius));
rippleDurationTime=typedArray.getInt(R.styleable.RippleBackground_rb_duration,DEFAULT_DURATION_TIME);
rippleAmount=typedArray.getInt(R.styleable.RippleBackground_rb_rippleAmount,DEFAULT_RIPPLE_COUNT);
rippleScale=typedArray.getFloat(R.styleable.RippleBackground_rb_scale,DEFAULT_SCALE);
rippleType=typedArray.getInt(R.styleable.RippleBackground_rb_type,DEFAULT_FILL_TYPE);
typedArray.recycle();
rippleDelay=rippleDurationTime/rippleAmount;
paint = new Paint();
paint.setAntiAlias(true);
if(rippleType==DEFAULT_FILL_TYPE){
rippleStrokeWidth=0;
paint.setStyle(Paint.Style.FILL);
}else
paint.setStyle(Paint.Style.STROKE);
paint.setColor(rippleColor);
rippleParams=new LayoutParams((int)(2*(rippleRadius+rippleStrokeWidth)),(int)(2*(rippleRadius+rippleStrokeWidth)));
rippleParams.addRule(CENTER_IN_PARENT, TRUE);
animatorSet = new AnimatorSet();
animatorSet.setInterpolator(new AccelerateDecelerateInterpolator());
animatorList=new ArrayList<Animator>();
for(int i=0;i<rippleAmount;i++){
RippleView rippleView=new RippleView(getContext());
addView(rippleView,rippleParams);
rippleViewList.add(rippleView);
final ObjectAnimator scaleXAnimator = ObjectAnimator.ofFloat(rippleView, "ScaleX", 1.0f, rippleScale);
scaleXAnimator.setRepeatCount(ObjectAnimator.INFINITE);
scaleXAnimator.setRepeatMode(ObjectAnimator.RESTART);
scaleXAnimator.setStartDelay(i * rippleDelay);
scaleXAnimator.setDuration(rippleDurationTime);
animatorList.add(scaleXAnimator);
final ObjectAnimator scaleYAnimator = ObjectAnimator.ofFloat(rippleView, "ScaleY", 1.0f, rippleScale);
scaleYAnimator.setRepeatCount(ObjectAnimator.INFINITE);
scaleYAnimator.setRepeatMode(ObjectAnimator.RESTART);
scaleYAnimator.setStartDelay(i * rippleDelay);
scaleYAnimator.setDuration(rippleDurationTime);
animatorList.add(scaleYAnimator);
final ObjectAnimator alphaAnimator = ObjectAnimator.ofFloat(rippleView, "Alpha", 1.0f, 0f);
alphaAnimator.setRepeatCount(ObjectAnimator.INFINITE);
alphaAnimator.setRepeatMode(ObjectAnimator.RESTART);
alphaAnimator.setStartDelay(i * rippleDelay);
alphaAnimator.setDuration(rippleDurationTime);
animatorList.add(alphaAnimator);
}
animatorSet.playTogether(animatorList);
}
private class RippleView extends View {
public RippleView(Context context) {
super(context);
this.setVisibility(View.INVISIBLE);
}
@Override
protected void onDraw(Canvas canvas) {
int radius=(Math.min(getWidth(),getHeight()))/2;
canvas.drawCircle(radius,radius,radius-rippleStrokeWidth,paint);
}
}
public void startRippleAnimation(){
if(!isRippleAnimationRunning()){
for(RippleView rippleView:rippleViewList){
rippleView.setVisibility(VISIBLE);
}
animatorSet.start();
animationRunning=true;
}
}
public void stopRippleAnimation(){
if(isRippleAnimationRunning()){
animatorSet.end();
animationRunning=false;
}
}
public boolean isRippleAnimationRunning(){
return animationRunning;
}
Let’s see the implementation of this custom view inside xml layout:
Code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:gravity="center_horizontal"
android:layout_width="match_parent"
android:background="@drawable/background"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center">
<com.hms.myshare.view.SearchingView
android:id="@+id/searching"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:rb_color="@android:color/white"
app:rb_duration="3000"
app:rb_radius="40dp"
app:rb_rippleAmount="6"
app:rb_scale="5">
<ImageView
android:id="@+id/img_logo"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_centerInParent="true"
android:src="@drawable/log" />
</com.hms.myshare.view.SearchingView>
</RelativeLayout>
<androidx.appcompat.widget.AppCompatTextView
android:layout_width="wrap_content"
android:layout_gravity="bottom|center_horizontal"
android:textColor="@android:color/white"
android:textSize="28sp"
android:gravity="center"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="Huawei Share Kit"
android:id="@+id/appCompatTextView2" />
</LinearLayout>
Let’ see the output of this view:
Let’s implement Search device and Send Data:
· We have implemented this functionality inside SearchingActivity class.
We need to perform the following operation in order to implement sending data to found device.
1. We need to instantiate SDK manager class i.e. ShareKitManager with current context of Activity inside the oncreate method.
Code:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = DataBindingUtil.setContentView(this, R.layout.searching_activity);
shareKitManager = new ShareKitManager(this);
2. Add callback IShareKitInitCallback to initialize the ShareKitManager class.
Code:
IShareKitInitCallback initCallback = isSuccess -> {
Log.i(TAG, "share kit init result:" + isSuccess);
if (isSuccess) {
binding.txtError.setText(getString(R.string.sharekit_init_finish));
} else {
binding.txtError.setText(getString(R.string.sharekit_init_failed));
}
};
shareKitManager.init(initCallback);
3. Register the ShareKitManager with IWidgetCallback:
Code:
private IWidgetCallback callback = new IWidgetCallback.Stub() {
@Override
public synchronized void onDeviceFound(NearByDeviceEx nearByDeviceEx) {
String deviceId = nearByDeviceEx.getCommonDeviceId();
if (deviceId == null) {
Log.e(TAG, "onDeviceFound: deviceId is null");
return;
}
Log.i(TAG, "onDeviceFound: " + deviceId + ", btName: " + nearByDeviceEx.getBtName());
synchronized (lock) {
deviceMap.put(deviceId, nearByDeviceEx);
foundTimeMap.put(deviceId, format.format(new Date()));
updateDeviceList();
}
}
@Override
public void onDeviceDisappeared(NearByDeviceEx nearByDeviceEx) {
String deviceId = nearByDeviceEx.getCommonDeviceId();
if (deviceId == null) {
Log.e(TAG, "onDeviceDisappeared: deviceId is null");
return;
}
Log.i(TAG, "onDeviceDisappeared: " + deviceId + ", btName: " + nearByDeviceEx.getBtName());
synchronized (lock) {
deviceMap.remove(deviceId);
foundTimeMap.remove(deviceId);
updateDeviceList();
}
}
@Override
public void onTransStateChange(NearByDeviceEx nearByDeviceEx, int state, int stateValue) {
Log.i(TAG, "trans state:" + state + " value:" + stateValue);
String stateDesc = "";
switch (state) {
case STATE_PROGRESS:
stateDesc = getString(R.string.sharekit_send_progress, stateValue);
break;
case STATE_SUCCESS:
stateDesc = getString(R.string.sharekit_send_finish);
break;
case STATE_STATUS:
stateDesc = getString(R.string.sharekit_state_chg, translateStateValue(stateValue));
break;
case STATE_ERROR:
stateDesc = getString(R.string.sharekit_send_error, translateErrorValue(stateValue));
showError(getString(R.string.sharekit_send_error, translateErrorValue(stateValue)));
break;
default:
break;
}
// showToast(stateDesc);
}
@Override
public void onEnableStatusChanged() {
int status = shareKitManager.getShareStatus();
Log.i(TAG, "sharekit ability current status:" + status);
}
};
We need to pass this callback to Register api.
Code:
shareKitManager.registerCallback(callback);
4. Start searching device using Discorvey api.
Code:
shareKitManager.startDiscovery();
5. If you found the device successfully we need to call the ShareBean api for send the data.
Code:
private void doSendText() {
String text = binding.sharetext.getText().toString();
ShareBean shareBean = new ShareBean(text);
doSend(destDevice, shareBean);
}
Followed by doSend() method:
Code:
private void doSend(String deviceName, ShareBean shareBean) {
List<NearByDeviceEx> processingDevices = shareKitManager.getDeviceList();
for (NearByDeviceEx device : processingDevices) {
if (deviceName.equals(device.getBtName())) {
return;
}
}
synchronized (lock) {
for (NearByDeviceEx device : deviceMap.values()) {
if (deviceName.equals(device.getBtName())) {
shareKitManager.doSend(device, shareBean);
}
}
}
}
Let’s implement Receive data functionality:
· We have implemented this functionality inside ReceivingActivity.
· We need to enable wifi in Huawei device which receive the socket connection request from sender device.
· So we need to initialize the ShareKitManager inside this activity oncreate method.
Code:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = DataBindingUtil.setContentView(this, R.layout.receiver_activity);
binding.searching.startRippleAnimation();
shareKitManager = new ShareKitManager(this);
IShareKitInitCallback initCallback = isSuccess -> {
Log.i(TAG, "share kit init result:" + isSuccess);
};
shareKitManager.init(initCallback);
shareKitManager.enable();
}
Android device (Sender):
Huawei device (Receiver):
If you have any doubts or queries. Please leave your valuable comment or post your doubts in HUAWEI Developer Forum.

Sign In with Huawei ID in non-Huawei devices [Kotlin]

More information like this, you can visit HUAWEI Developer Forum​
In a previous post I've written about how to sign in with your Google account in devices without Google Play Services. But, what if a user has a Huawei ID and wants to use it to sign in your app from another device, maybe you can ask the user to install the HMS Core APK, but this can confuse some users. If this is your situation you can use the AppAuth library and the Huawei OAUTH APIs to easily offer the sign in with Huawei for all devices.
Previous requirements
A developer account
An app project on AGC
Adding the required dependencies
For this example we will use the next libraries:
AppAuth: It will allow us to open the sign in page in a web browser and catch the result in our app.
Okio: Required by AppAuth to process data.
Account Kit: Although we won't use the Account Kit capabilities, this dependency allow us to add the Huawei Id Sign In button.
Kotlin Coroutines: Will allow us obtain the user information and download the profile picture without blocking the main thread.
Material Components: Will be used to show a Snackbar telling the user if something went wrong.
Now add the corresponding dependencies in your app leve build.gradle:
Code:
implementation 'net.openid:appauth:0.7.1'
implementation 'com.squareup.okio:okio:1.15.0'
implementation 'com.huawei.agconnect:agconnect-core:1.4.1.300'
implementation 'com.huawei.hms:hwid:5.0.1.301'
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7"
implementation 'com.google.android.material:material:1.2.0'
Configuring AppAuth
Add the next under the "application" node in your AndroidManifest
Code:
<activity android:name="net.openid.appauth.RedirectUriReceiverActivity">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="com.huawei.apps.APP_ID" />
</intent-filter>
</activity>
Replace APP_ID for your own app Id from the project view on your AGC console
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
App information panel on AGC
Add the next under defaultConfig in your app level build.gradle
Code:
manifestPlaceholders = [
'appAuthRedirectScheme': 'com.huawei.apps.APP_ID'
]
It will look similar to this:
Code:
defaultConfig {
applicationId "com.hms.demo.appauthhuawei"
minSdkVersion 27
targetSdkVersion 29
versionCode 1
versionName "1.0"
manifestPlaceholders = [
'appAuthRedirectScheme': 'com.huawei.apps.102839067'
]
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
Code:
<com.huawei.hms.support.hwid.ui.HuaweiIdAuthButton
android:id="@+id/hwid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="112dp"
app:hwid_button_theme="hwid_button_theme_full_title"
app:hwid_color_policy="hwid_color_policy_black"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.497"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
Login screen
I will use the same activity to show the profile information, but will keep the views hidden until I get the data.
Code:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.huawei.hms.support.hwid.ui.HuaweiIdAuthButton
android:id="@+id/hwid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="112dp"
app:hwid_button_theme="hwid_button_theme_full_title"
app:hwid_color_policy="hwid_color_policy_black"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.497"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/pic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="216dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:srcCompat="@tools:sample/avatars"
android:visibility="gone"/>
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/pic"
android:visibility="gone"/>
<TextView
android:id="@+id/mail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/name"
android:visibility="gone"/>
</androidx.constraintlayout.widget.ConstraintLayout>
Making the Sign In request
Prepare all the required information to perform the request
Code:
val AUTH_ENDPOINT = "https://oauth-login.cloud.huawei.com/oauth2/v3/authorize"
val TOKEN_ENDPOINT = "https://oauth-login.cloud.huawei.com/oauth2/v3/token"
val APP_ID = "REPLACE WITH YOUR APP ID"
val HW_REDIRECT_URI = "com.huawei.apps.$APP_ID:/oauth2redirect"
val HW_ID_CODE = 100
Note: The endpoints above may change with the time, check this chart to get the current valid endpoints.
Add an OnClickListener to your Sign In button
Code:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
hwid.setOnClickListener(this)
}
override fun onClick(v: View?) {
when (v?.id) {
R.id.hwid -> handleHuaweiId()
}
}
Now is time to perform the request
Code:
private fun handleHuaweiId() {
val serviceConfig = AuthorizationServiceConfiguration(
Uri.parse(AUTH_ENDPOINT), // authorization endpoint
Uri.parse(TOKEN_ENDPOINT)// token endpoint
)
val authRequestBuilder = AuthorizationRequest.Builder(
serviceConfig, // the authorization service configuration
APP_ID, // the client ID, typically pre-registered and static
ResponseTypeValues.CODE, //
Uri.parse(HW_REDIRECT_URI)//The redirect URI
)
authRequestBuilder.setScope("openid email profile")
val authRequest = authRequestBuilder.build()
val authService = AuthorizationService(this)
val authIntent = authService.getAuthorizationRequestIntent(authRequest)
startActivityForResult(authIntent, HW_ID_CODE)
authService.dispose()
}
This will open the Huawei Sign In page on the system default browser.
Huawei Sign In page
Now override the onActivityResult method to get the Sign In result back on your app.
Code:
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
when (requestCode) {
HW_ID_CODE -> handleHuaweiSignIn(data)
}
}
You must parse the Auth result to get the Access Token and the ID Token.
Code:
private fun handleHuaweiSignIn(data: Intent?) {
if (data == null) {
return
}
val response = AuthorizationResponse.fromIntent(data)
val ex = AuthorizationException.fromIntent(data)
val authState = AuthState(response, ex)
if (response == null) {
Snackbar.make(hwid, "Response is null, please try again", Snackbar.LENGTH_SHORT).show()
return
}
val service = AuthorizationService(this)
service.performTokenRequest(
response.createTokenExchangeRequest(),
) { tokenResponse, exception ->
service.dispose()
if (tokenResponse == null) {
Snackbar.make(
hwid,
"Token Exchange failed ${exception?.code}",
Snackbar.LENGTH_SHORT
).show()
} else {
authState.update(tokenResponse, exception)
hwid.visibility = View.GONE
obtainUserInfo(tokenResponse.idToken)
}
}
}
The id token contains the user's information encoded in the next format <headers.payload.signature>, so you must decode it to obtain the requested data. Use a coroutine to decode the information and download the user's profile picture.
Note: To get the user's email, you must add "email" to the request scopes and the user must check the email authorization checkbox on the authorization page. If the user doesn't mark the checkbox you won't receive the email.
Code:
private fun obtainUserInfo(idToken: String?) {
CoroutineScope(IO).launch {
if (idToken == null) [email protected]
val json = decoded(idToken)
if (json != null) {
Log.e("JSON", json.toString())
runOnUiThread {
name.text = json.getString("display_name")
name.visibility = View.VISIBLE
if (json.has("email")) {
mail.text = json.getString("email")
mail.visibility = View.VISIBLE
}
}
val bitmap = getBitmap(json.getString("picture"))
if (bitmap != null) {
val resizedBitmap = getResizedBitmap(bitmap, 480, 480)
runOnUiThread {
pic.setImageBitmap(resizedBitmap)
pic.visibility = View.VISIBLE
}
}
}
//val conn=URL("https://oauth-login.cloud.huawei.com/.well-known/openid-configuration").openConnection() as HttpURLConnection
//conn.requestMethod="POST"
}
}
@Throws(Exception::class)
private fun decoded(JWTEncoded: String): JSONObject? {
try {
val split = JWTEncoded.split(".").toTypedArray()
return JSONObject(getJson(split[1]))
} catch (e: UnsupportedEncodingException) {
//Error
return null
}
}
@Throws(UnsupportedEncodingException::class)
private fun getJson(strEncoded: String): String {
val decodedBytes: ByteArray = Base64.decode(strEncoded, Base64.URL_SAFE)
return String(decodedBytes, StandardCharsets.UTF_8)
}
}
Profile Screen
Conclusion
Now all your users can use their Huawei IDs to Sign In your app, even in non-Huawei devices. To keep the user signed I recommend you to use Huawei Auth Service.
Check the full example here: https://github.com/DTSE-HWI-Q-A/AppAuthHuawei
Reference
https://developer.huawei.com/consumer/en/doc/HMSCore-Guides-V5/app-auth-access-huaweiid-0000001050434521-V5
Excellent, thank you

Learn Form Recognition using ML kit | JAVA

Introduction
Huawei ML kit allows to improve our lives in countless ways, streamling complex interactions with better solution such as Text detection,Face detection,Product visual search,Voice detection,Image related etc ..!
Form recognition service can recognize the information from FORM it will return table content such as table count, rows, columns, cellcoordinate, textInfo, etc..!
Use case
This service will help you in daily basis, for example after collecting a large number of data we can use this service to recognize and convert the content into electronic documents.
Suggestions
1. Forms such as questionnaires can be recognized.
2. Currently images containing multiple forms cannot be recognized.
3. Shooting Angle: The horizontal tilt angle is less than 5 degrees.
4. Form Integrity: No missing corners and no bent or segment lines
5. Form Content: Only printed content can recognized, images, hand written content, seals and watermarks in the form cannot be recognized.
6. Image Specification: Image ratio should be less than or equal 3:1, resolution must be greater than 960 x 960 px.
ML Kit Configuration.
1. Login into AppGallery Connect, select MlKitSample in My Project list.
2. Enable Ml Kit, Choose My Projects > Project settings > Manage APIs
Development Process
Create Application in Android Studio.
App level gradle dependencies.
Code:
apply plugin: 'com.android.application'
apply plugin: 'com.huawei.agconnect'
Gradle dependencies
Code:
implementation 'com.huawei.hms:ml-computer-vision-formrecognition:2.0.4.300'
implementation 'com.huawei.hms:ml-computer-vision-formrecognition-model:2.0.4.300'
Root level gradle dependencies
Code:
maven {url 'https://developer.huawei.com/repo/'}
classpath 'com.huawei.agconnect:agcp:1.3.1.300'
Add the below permissions in Android Manifest file
Code:
<manifest xlmns:android...>
...
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application ...
</manifest>
Add the following meta data in Manifest file its automatically install machine learning model.
Code:
<meta-data
android:name="com.huawei.hms.ml.DEPENDENCY"
android:value="fr" />
1. Create Instance for MLFormRecognitionAnalyzerSetting in onCreate.
Code:
MLFormRecognitionAnalyzerSetting setting = new MLFormRecognitionAnalyzerSetting.Factory().create();
2. Create instance for MLFormRecognitionAnalyzer in onCreate.
Code:
MLFormRecognitionAnalyzerFactory analyzer = MLFormRecognitionAnalyzerFactory.getInstance().getFormRecognitionAnalyzer(setting);
3. Check Runtime permissions.
4. FormRecogActivity is the responsible for load forms from local storage and capture the live forms using FormRecognigation service and we can extract the form cells content.
Code:
public class FormRecogActivity extends AppCompatActivity {
private MLFormRecognitionAnalyzerSetting setting;
private MLFormRecognitionAnalyzer analyzer;
private ImageView mImageView;
private TextView text, textTotal;
private MLFrame mlFrame;
private Uri imageUri;
private Bitmap bitmap;
private int camRequestCode = 100;
private int storageRequestCode = 200;
private int sum = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_form_recog);
mImageView = findViewById(R.id.image);
text = findViewById(R.id.text);
textTotal = findViewById(R.id.text_total);
setting = new MLFormRecognitionAnalyzerSetting.Factory().create();
analyzer = MLFormRecognitionAnalyzerFactory.getInstance().getFormRecognitionAnalyzer(setting);
}
public void onLoadImage(View view) {
Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, storageRequestCode);
}
public void onClikCam(View view) {
if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.CAMERA}, camRequestCode);
} else {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, camRequestCode);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == camRequestCode) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, camRequestCode);
} else {
Toast.makeText(this, "Camera permission denied", Toast.LENGTH_LONG).show();
}
}
if (requestCode == storageRequestCode) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Intent intent = new Intent(
Intent.ACTION_PICK,
MediaStore.Images.Media.EXTERNAL_CONTENT_URI
);
startActivityForResult(intent, storageRequestCode);
} else {
Toast.makeText(this, "Storage permission denied", Toast.LENGTH_LONG).show();
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK && requestCode == storageRequestCode) {
imageUri = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
mImageView.setImageBitmap(bitmap);
callFormService();
} catch (IOException e) {
e.printStackTrace();
}
} else if (resultCode == RESULT_OK && requestCode == camRequestCode) {
bitmap = (Bitmap) data.getExtras().get("data");
mImageView.setImageBitmap(bitmap);
callFormService();
}
}
private void callFormService() {
mlFrame = MLFrame.fromBitmap(bitmap);
analyzer = MLFormRecognitionAnalyzerFactory.getInstance().getFormRecognitionAnalyzer();
Task<JsonObject> task = analyzer.asyncAnalyseFrame(mlFrame);
task.addOnSuccessListener(new OnSuccessListener<JsonObject>() {
@Override
public void onSuccess(JsonObject jsonObject) {
if (jsonObject != null && jsonObject.get("retCode").getAsInt() == MLFormRecognitionConstant.SUCCESS) {
Gson gson = new Gson();
String result = jsonObject.toString();
MLFormRecognitionTablesAttribute mlObject = gson.fromJson(result, MLFormRecognitionTablesAttribute.class);
ArrayList<MLFormRecognitionTablesAttribute.TablesContent.TableAttribute> tableAttributeArrayList = mlObject.getTablesContent().getTableAttributes();
ArrayList<MLFormRecognitionTablesAttribute.TablesContent.TableAttribute.TableCellAttribute> tableCellAttributes = tableAttributeArrayList.get(0).getTableCellAttributes();
for (MLFormRecognitionTablesAttribute.TablesContent.TableAttribute.TableCellAttribute attribute : tableCellAttributes) {
String info = attribute.textInfo;
text.setText(text.getText().toString() + "\n" + info);
}
Toast.makeText(FormRecogActivity.this, "Successfully Form Recognized", Toast.LENGTH_LONG).show();
Log.d("TAG", "result: " + result);
} else if (jsonObject != null && jsonObject.get("retCode").getAsInt() == MLFormRecognitionConstant.FAILED) {
Toast.makeText(FormRecogActivity.this, "Form Recognition Convertion Failed", Toast.LENGTH_LONG).show();
}
textTotal.setText("Total Cart Value : "+ sum +" Rs ");
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception e) {
Toast.makeText(FormRecogActivity.this, "Form Recognition API Failed", Toast.LENGTH_LONG).show();
}
});
}
}
5.This Xml class for creating the UI.
Code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#2196F3"
android:orientation="vertical">
<ImageView
android:id="@+id/image"
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_marginTop="?actionBarSize" />
<Button
android:id="@+id/btn_storage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:onClick="onLoadImage"
android:background="#F44336"
android:textColor="@color/upsdk_white"
android:text="Load Image from storage" />
<Button
android:id="@+id/btn_capture"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:onClick="onClikCam"
android:background="#F44336"
android:textColor="@color/upsdk_white"
android:text="Capture Image" />
<TextView
android:id="@+id/text_total"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:textSize="20sp"
android:textColor="@color/upsdk_white"
android:textStyle="bold" />
<ScrollView
android:layout_marginTop="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:textSize="20sp"
android:textColor="@color/upsdk_white"
android:textStyle="bold" />
</ScrollView>
</LinearLayout>
Result
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Tips & Tricks
1. Enable ML service API in AppGallery Connect.
2. Capture single form only, form service not supporting multiple forms.
3. The resolution must greater than 960 x 960px.
4. Currently this service not supporting handwritten text information.
Conclusion
This article will help you to get textinfo from form, it will extract the individual cells data with coordinates. This service will help you in daily basis.
Thank you for reading and if you have enjoyed this article I would suggest you implement this and provide your experience.
Reference
ML Kit – Form Recognition
Refer the URL

Let's develop Music Station Android app for Huawei Vision S (Smart TV)

{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Article Introduction
In this article, we will develop Music Station android app for Huawei Vision S (Smart TV) devices. Huawei Vision S is a brand new large screen category and important part of Huawei's "1+8+N" full-scenario services and Huawei Developer Ecosystem. Since, Huawei Vision S system architecture supports AOSP project framework, we used Leanback Library which offers extensive features for large screens to develop our user experience.
Why an app for Huawei Vision S?
Large screen offers better visibility and enhanced user experience. Due to Covid-19 lockdown, Smart TV has grown to include over 80% more users than it had this time last year. Total distribution of usage for TV is increasing rapidly. As a result of this, total number of TV apps has jumped dramatically including educational and entertainment apps.
Designing App for Huawei Vision S
While designing an app for Huawei Vision S, we have to keep following key points in our mind:
Build Layout for TV: We must design landscape orientation layout that allows users to easily see the screen 10 feet away from the TV.
Management Controller: Our app must support arrow keys and handle offline controllers as well as inputs from multiple controllers.
For this article, we implemented Leanback Library which offers amazing and interactive user experience for apps such as Audio/Video players and so on.
Pre-Requisites
Before getting started, following are the requirements:
Android Studio (During this tutorial, we used version 4.1.1)
Android SDK 24 or later
Huawei Vision S for testing
Development
Following are the major steps of development for this article:
Step 1: Add Dependencies & Permissions
1.1: Add the following dependencies in the app level build.gradle file:
Java:
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
// TV Libs
implementation 'androidx.leanback:leanback:1.0.0'
implementation 'androidx.leanback:leanback-preference:1.0.0'
// General
implementation 'org.greenrobot:eventbus:3.2.0'
implementation 'com.google.code.gson:gson:2.8.7'
implementation 'androidx.appcompat:appcompat:1.3.0'
implementation 'com.nabinbhandari.android:permissions:3.8'
// Animation
implementation 'com.airbnb.android:lottie:3.7.0'
implementation 'com.gauravk.audiovisualizer:audiovisualizer:0.9.2'
implementation 'com.github.bumptech.glide:glide:4.12.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.12.0'
implementation 'com.squareup.okhttp3:okhttp:4.9.0'
implementation ('com.github.bumptech.glide:okhttp3-integration:4.12.0'){
exclude group: 'glide-parent'
}
}
1.2: We are developing this app only for TV. So, we will disable the Touch_Screen requirements and enable the Leanback. For the audio visualizer, we need Record_Audio permission. Add the following permissions and features tag in the AndroidManifest.xml:
Java:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-feature
android:name="android.hardware.touchscreen"
android:required="false" />
<uses-feature
android:name="android.software.leanback"
android:required="true" />
<uses-feature
android:name="android.hardware.microphone"
android:required="false" />
1.3: Huawei Vision S supports Leanback Library but does not supports Leanback Launcher. So, we added the following tag in the SplashActivity inside the AndroidManifest.xml:
Code:
<activity android:name=".activities.SplashActivity"
android:screenOrientation="landscape"
android:banner="@drawable/app_icon"
android:icon="@drawable/app_icon"
android:label="@string/app_name"
android:launchMode="singleTop"
android:logo="@drawable/app_icon"
android:theme="@style/SplashTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<!-- HUAWEI Vision S only support CATEGORY_LAUNCHER -->
<category android:name="android.intent.category.LAUNCHER" />
<!-- ADD the below line only if you want to release the same code on Google Play -->
<category android:name="android.intent.category.LEANBACK_LAUNCHER" />
</intent-filter>
</activity>
1.4: The banner icon is required when we are developing apps for TV. The size for Huawei Vision S banner icon is 496x280 which must be added in the drawable folder.
Step 2: Generating Supported Language JSON
Since our main goal is playing Music, we restricted data source and generated a JSON file locally to avoid API creation and API calling. In real world scenario, an API can be developed or can be used to get the real-time data.
Step 3: Building Layout
3.1: The most important layout of our application is of PlayerActivity. Add the following activity_player.xml layout file in the layout folder of the res. We developed this layout to enhance user experience and add custom views like Audio Visualizer. The layout has two main sub-layouts, Player Content View and Error View.
XML:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:custom="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/main_background"
android:keepScreenOn="true">
<ImageView
android:id="@+id/imgBackground"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/main_background" />
<com.airbnb.lottie.LottieAnimationView
android:id="@+id/splashAnimation"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:lottie_autoPlay="false"
app:lottie_progress="53"
app:lottie_rawRes="@raw/splash_animation" />
<com.gauravk.audiovisualizer.visualizer.CircleLineVisualizer
android:id="@+id/blastVisualizer"
android:layout_width="match_parent"
android:layout_height="match_parent"
custom:avColor="@color/light_red"
custom:avDensity="0.8"
custom:avSpeed="normal"
custom:avType="fill" />
<ImageView
android:id="@+id/imgOverlay"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha="0.5"
android:background="@android:color/black" />
<ProgressBar
android:id="@+id/progressBarLoader"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_centerInParent="true"
android:indeterminate="true"
android:indeterminateTint="@color/colorPrimaryDark"
android:indeterminateTintMode="src_atop"
android:visibility="gone" />
<RelativeLayout
android:id="@+id/rlContentLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:paddingStart="50dp"
android:paddingEnd="50dp">
<ImageView
android:id="@+id/imgIcon"
android:layout_width="80dp"
android:layout_height="80dp" />
<TextView
android:id="@+id/txtSongName"
style="@style/TextViewStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/imgIcon"
android:layout_marginTop="5dp"
android:textSize="@dimen/title_text_size" />
<TextView
android:id="@+id/txtArtistName"
style="@style/TextViewStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/txtSongName"
android:layout_marginTop="5dp"
android:textSize="@dimen/artist_text_size" />
<TextView
android:id="@+id/txtCategoryName"
style="@style/TextViewStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/txtArtistName"
android:layout_marginTop="5dp"
android:textSize="@dimen/category_text_size" />
<ImageButton
android:id="@+id/btnPlayPause"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/txtCategoryName"
android:layout_marginTop="50dp"
android:background="@drawable/ui_selector_bg"
android:focusable="true"
android:src="@drawable/lb_ic_play" />
<SeekBar
android:id="@+id/seekBarAudio"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/btnPlayPause"
android:layout_marginTop="10dp"
android:background="@drawable/ui_selector_bg"
android:colorControlActivated="@color/white"
android:focusable="true"
android:progressTint="@color/white"
android:thumbTint="@color/white" />
<TextView
android:id="@+id/txtTotalDuration"
style="@style/TextViewStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/seekBarAudio"
android:layout_alignEnd="@+id/seekBarAudio"
android:layout_marginTop="5dp"
android:text=" / -"
android:textSize="@dimen/time_text_size" />
<TextView
android:id="@+id/txtCurrentTime"
style="@style/TextViewStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/seekBarAudio"
android:layout_marginTop="5dp"
android:layout_toStartOf="@+id/txtTotalDuration"
android:text="-"
android:textSize="@dimen/time_text_size" />
</RelativeLayout>
<RelativeLayout
android:id="@+id/rlErrorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/background"
android:visibility="gone">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/imgErrorLoading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:src="@drawable/lb_ic_sad_cloud" />
<TextView
android:id="@+id/txtError"
style="@style/TextViewStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/imgErrorLoading"
android:layout_centerHorizontal="true"
android:text="@string/error_message"
android:textSize="@dimen/time_text_size" />
<Button
android:id="@+id/btnDismiss"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/txtError"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:focusable="true"
android:text="@string/dismiss_error" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
3.2: In this article, we used Lottie animation in the SplashActivity for better user experience inside the following activity_splash.xml.
XML:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="@color/colorPrimaryDark"
tools:context=".activities.SplashActivity">
<com.airbnb.lottie.LottieAnimationView
android:id="@+id/splashAnimation"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:lottie_autoPlay="true"
app:lottie_repeatCount="1"
app:lottie_rawRes="@raw/splash_animation" />
<ImageView
android:id="@+id/imgAppIcon"
android:src="@drawable/img_music_station_logo"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
android:layout_marginBottom="40dp"
android:scaleX="0.8"
android:scaleY="0.8"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
Step 4: Adding JAVA Classes
4.1: We extended the MainFragment class from BrowseFragment which is Leanback home layout component. This view handles the landing screen containing interactive side menu, main content area with different cards and navigation between them.
Java:
public class MainFragment extends BrowseFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
prepareBackgroundManager();
setupUIElements();
loadRows();
setupEventListeners();
}
private void loadRows() {
ArrayObjectAdapter rowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
CardPresenter cardPresenter = new CardPresenter();
int i;
for (i = 0; i < DataUtil.getData(getActivity()).size(); i++) {
CategoryModel categoryModel = DataUtil.getData(getActivity()).get(i);
ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(cardPresenter);
for (int j = 0; j < categoryModel.getCategorySongs().size(); j++) {
listRowAdapter.add(categoryModel.getCategorySongs().get(j));
}
HeaderItem header = new HeaderItem(i, categoryModel.getCategoryName());
rowsAdapter.add(new ListRow(header, listRowAdapter));
}
setAdapter(rowsAdapter);
}
private void prepareBackgroundManager() {
BackgroundManager mBackgroundManager = BackgroundManager.getInstance(getActivity());
mBackgroundManager.attach(getActivity().getWindow());
mBackgroundManager.setColor(getResources().getColor(R.color.main_background));
DisplayMetrics mMetrics = new DisplayMetrics();
getActivity().getWindowManager().getDefaultDisplay().getMetrics(mMetrics);
}
private void setupUIElements() {
setTitle(getString(R.string.app_name));
setHeadersState(HEADERS_ENABLED);
setHeadersTransitionOnBackEnabled(true);
setBrandColor(ContextCompat.getColor(getActivity(), R.color.colorPrimaryDark));
setSearchAffordanceColor(ContextCompat.getColor(getActivity(), R.color.colorPrimary));
}
private void setupEventListeners() {
setOnItemViewClickedListener(new ItemViewClickedListener());
}
private final class ItemViewClickedListener implements OnItemViewClickedListener {
@Override
public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item, RowPresenter.ViewHolder rowViewHolder, Row row) {
if (item instanceof Song) {
Song song = (Song) item;
Intent intent = new Intent(getActivity(), PlayerActivity.class);
intent.putExtra(DataUtil.SONG_DETAIL, song);
getActivity().startActivity(intent);
}
}
}
}
4.2: Cards are displayed using CardPresenter which is extended by Presenter from the Leanback library.
Java:
public class CardPresenter extends Presenter {
private static final int CARD_WIDTH = 313;
private static final int CARD_HEIGHT = 176;
private static int sSelectedBackgroundColor;
private static int sDefaultBackgroundColor;
private static void updateCardBackgroundColor(ImageCardView view, boolean selected) {
int color = selected ? sSelectedBackgroundColor : sDefaultBackgroundColor;
view.setBackgroundColor(color);
view.findViewById(R.id.info_field).setBackgroundColor(color);
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent) {
sDefaultBackgroundColor = ContextCompat.getColor(parent.getContext(), R.color.background);
sSelectedBackgroundColor = ContextCompat.getColor(parent.getContext(), R.color.colorPrimaryDark);
ImageCardView cardView =
new ImageCardView(parent.getContext()) {
@Override
public void setSelected(boolean selected) {
updateCardBackgroundColor(this, selected);
super.setSelected(selected);
}
};
cardView.setFocusable(true);
cardView.setFocusableInTouchMode(true);
updateCardBackgroundColor(cardView, false);
return new ViewHolder(cardView);
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, Object item) {
Song song = (Song) item;
ImageCardView cardView = (ImageCardView) viewHolder.view;
cardView.setTitleText(song.getSongName());
cardView.setContentText(song.getArtistName());
cardView.setMainImageDimensions(CARD_WIDTH, CARD_HEIGHT);
Glide.with(viewHolder.view.getContext())
.load(song.getImageURL())
.centerCrop()
.placeholder(R.drawable.app_icon)
.error(R.drawable.app_icon)
.into(cardView.getMainImageView());
}
@Override
public void onUnbindViewHolder(ViewHolder viewHolder) {
ImageCardView cardView = (ImageCardView) viewHolder.view;
cardView.setBadgeImage(null);
cardView.setMainImage(null);
}
}
4.3: Whenever user click on any Card Item, PlayerActivity is opened. Following are some of the important functions of the PlayerActivity.java. Please refer to the github link for complete code of this class.
Java:
private void handlePlayer(){
if (currentState == MediaPlayerHolder.PlayerState.PLAYING) {
pauseSong();
} else if (currentState == MediaPlayerHolder.PlayerState.PAUSED ||
currentState == MediaPlayerHolder.PlayerState.COMPLETED ||
currentState == MediaPlayerHolder.PlayerState.RESET) {
playSong();
}
}
private void setUI() {
if (song != null) {
txtSongName.setText(song.getSongName());
txtArtistName.setText(song.getArtistName());
txtCategoryName.setText(song.getCategoryName());
Glide.with(this)
.load(song.getImageURL())
.centerCrop()
.circleCrop()
.placeholder(R.drawable.app_icon)
.error(R.drawable.app_icon)
.into(imgIcon);
}
setupSeekBar();
}
private void pauseSong() {
EventBus.getDefault().post(new LocalEventFromMainActivity.PausePlayback());
}
private void playSong() {
EventBus.getDefault().post(new LocalEventFromMainActivity.StartPlayback());
}
private void resetSong() {
EventBus.getDefault().post(new LocalEventFromMainActivity.ResetPlayback());
}
public void log(StringBuffer formattedMessage) {
Log.d(PlayerActivity.class.getSimpleName(), String.format("log: %s", formattedMessage));
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(LocalEventFromMediaPlayerHolder.UpdateLog event) {
log(event.formattedMessage);
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(LocalEventFromMediaPlayerHolder.PlaybackDuration event) {
seekBarAudio.setMax(event.duration);
setTotalDuration(event.duration);
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(LocalEventFromMediaPlayerHolder.PlaybackPosition event) {
if (!isUserSeeking) {
seekBarAudio.setProgress(event.position, true);
updateProgressTime(event.position);
}
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(LocalEventFromMediaPlayerHolder.StateChanged event) {
hideLoader();
currentState = event.currentState;
switch (event.currentState) {
case PLAYING:
btnPlayPause.setImageResource(R.drawable.lb_ic_pause);
if (mMediaPlayerHolder.getAudioSessionId() != -1 && blastVisualizer != null){
blastVisualizer.setAudioSessionId(mMediaPlayerHolder.getAudioSessionId());
blastVisualizer.show();
}
break;
case PAUSED:
case RESET:
case COMPLETED:
btnPlayPause.setImageResource(R.drawable.lb_ic_play);
if (blastVisualizer != null){
blastVisualizer.hide();
}
break;
case ERROR:
showError();
break;
}
}
private void showError() {
if(song != null){
String title = song.getSongName();
String artist = song.getArtistName();
String songName = "Unable to play " + title + " (" + artist + ")";
txtError.setText(songName);
}
rlErrorLayout.setVisibility(View.VISIBLE);
btnDismiss.requestFocus();
}
private void setTotalDuration(int duration) {
long totalSecs = TimeUnit.MILLISECONDS.toSeconds(duration);
long hours = totalSecs / 3600;
long minutes = (totalSecs % 3600) / 60;
long seconds = totalSecs % 60;
String totalDuration = String.format(Locale.ENGLISH, "%02d:%02d:%02d", hours, minutes, seconds);
if (hours == 0) {
totalDuration = String.format(Locale.ENGLISH, "%02d:%02d", minutes, seconds);
}
String text = " / " + totalDuration;
txtTotalDuration.setText(text);
}
private void updateProgressTime(int position){
long currentSecs = TimeUnit.MILLISECONDS.toSeconds(position);
long hours = currentSecs / 3600;
long minutes = (currentSecs % 3600) / 60;
long seconds = currentSecs % 60;
String currentDuration = String.format(Locale.ENGLISH, "%02d:%02d:%02d", hours, minutes, seconds);
if (hours == 0) {
currentDuration = String.format(Locale.ENGLISH, "%02d:%02d", minutes, seconds);
}
txtCurrentTime.setText(currentDuration);
}
4.4: We used EventBus to asynchronously notify the PlayerActivity UI changes. The MediaPlayerHolder.java class handles the MediaPlayer states and manages the functionalities like playing, pause and seekbar position updates. Please refer to the github link for complete code of this class.
Java:
public int getAudioSessionId(){
if(mMediaPlayer != null){
return mMediaPlayer.getAudioSessionId();
} else
return -1;
}
public void release() {
logToUI("release() and mMediaPlayer = null");
mMediaPlayer.release();
EventBus.getDefault().unregister(this);
}
public void stop() {
logToUI("stop() and mMediaPlayer = null");
mMediaPlayer.stop();
}
public void play() {
if (!mMediaPlayer.isPlaying()) {
logToUI(String.format("start() %s", urlPath));
mMediaPlayer.start();
startUpdatingSeekbarWithPlaybackProgress();
EventBus.getDefault()
.post(new LocalEventFromMediaPlayerHolder.StateChanged(PlayerState.PLAYING));
}
}
public void pause() {
if (mMediaPlayer.isPlaying()) {
mMediaPlayer.pause();
logToUI("pause()");
EventBus.getDefault()
.post(new LocalEventFromMediaPlayerHolder.StateChanged(PlayerState.PAUSED));
}
}
public void reset() {
logToUI("reset()");
mMediaPlayer.reset();
load(urlPath);
stopUpdatingSeekbarWithPlaybackProgress(true);
EventBus.getDefault()
.post(new LocalEventFromMediaPlayerHolder.StateChanged(PlayerState.RESET));
}
public void load(String url) {
this.urlPath = url.replaceAll(" ", "%20");
if (mMediaPlayer != null) {
try {
mMediaPlayer.setAudioAttributes(
new AudioAttributes
.Builder()
.setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
.build());
mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer player) {
initSeekbar();
play();
}
});
mMediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
EventBus.getDefault()
.post(new LocalEventFromMediaPlayerHolder.StateChanged(PlayerState.ERROR));
return false;
}
});
mMediaPlayer.setOnSeekCompleteListener(new MediaPlayer.OnSeekCompleteListener() {
@Override
public void onSeekComplete(MediaPlayer arg0) {
EventBus.getDefault().post(new LocalEventFromMediaPlayerHolder.StateChanged(PlayerState.PLAYING));
SystemClock.sleep(200);
mMediaPlayer.start();
}
});
logToUI("load() {1. setDataSource}");
mMediaPlayer.setDataSource(urlPath);
logToUI("load() {2. prepare}");
mMediaPlayer.prepareAsync();
} catch (Exception e) {
EventBus.getDefault().post(new LocalEventFromMediaPlayerHolder.StateChanged(PlayerState.ERROR));
logToUI(e.toString());
}
}
}
public void seekTo(int duration) {
logToUI(String.format(Locale.ENGLISH, "seekTo() %d ms", duration));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
mMediaPlayer.seekTo(duration, MediaPlayer.SEEK_CLOSEST);
else
mMediaPlayer.seekTo(duration);
}
private void stopUpdatingSeekbarWithPlaybackProgress(boolean resetUIPlaybackPosition) {
if (mExecutor != null) {
mExecutor.shutdownNow();
}
mExecutor = null;
mSeekbarProgressUpdateTask = null;
if (resetUIPlaybackPosition) {
EventBus.getDefault().post(new LocalEventFromMediaPlayerHolder.PlaybackPosition(0));
}
}
private void startUpdatingSeekbarWithPlaybackProgress() {
// Setup a recurring task to sync the mMediaPlayer position with the Seekbar.
if (mExecutor == null) {
mExecutor = Executors.newSingleThreadScheduledExecutor();
}
if (mSeekbarProgressUpdateTask == null) {
mSeekbarProgressUpdateTask = new Runnable() {
@Override
public void run() {
if (mMediaPlayer != null && mMediaPlayer.isPlaying()) {
int currentPosition = mMediaPlayer.getCurrentPosition();
EventBus.getDefault().post(
new LocalEventFromMediaPlayerHolder.PlaybackPosition(
currentPosition));
}
}
};
}
mExecutor.scheduleAtFixedRate(
mSeekbarProgressUpdateTask,
0,
SEEKBAR_REFRESH_INTERVAL_MS,
TimeUnit.MILLISECONDS
);
}
public void initSeekbar() {
// Set the duration.
final int duration = mMediaPlayer.getDuration();
EventBus.getDefault().post(new LocalEventFromMediaPlayerHolder.PlaybackDuration(duration));
logToUI(String.format(Locale.ENGLISH, "setting seekbar max %d sec", TimeUnit.MILLISECONDS.toSeconds(duration)));
}
When user click Select button on the Remote Control of Huawei Vision S on any item, the player view is opened and MediaPlayer start loading the song url. Once the song is loaded, it starts playing and the icon of Play changes to Pause. The Audio Visualizer takes AudioSessionId to sync with audio song. By default, seekbar is selected for the user to skip the songs using Right and Left buttons of the Remote Control. The duration of the song updates based on seekbar position.
Step 5: Run the application
We have added all the required code. Now, just build the project, run the application and test on Huawei Vision S.
Conclusion
Using Leanback, developers can develop beautifully crafted android applications with amazing UI/UX experience for Huawei Vision S. They can also enhance their user engagement and behavior. Combining different Huawei Kits supported by Vision S like Account or IAP can yield amazing results.
Tips and Tricks
You must use default Launcher if you are developing app for Huawei Vision S.
Leanback Launcher is not supported by Huawei Vision S.
If you have same code base for Mobile and Vision S devices, you can use TVUtils class to check at run-time about the device and offer functionalities based on it.
Make sure to add all the permissions like RECORD_AUDIO, INTERNET.
Make sure to add run-time permissions check. In this article, we used 3rd party Permission Check library with custom Dialog if user deny any of the required permission.
Always use animation libraries like Lottie or ViewAnimator to enhance UI/UX in your application.
We used AudioVisualizer library to bring Music feel on our Player UI.
References
Android TV Documentation:
https://developer.android.com/training/tv/start
https://developer.android.com/training/tv/start/layouts
https://developer.android.com/training/tv/start/controllers
https://developer.android.com/training/tv/start/navigation
Lottie Android Documentation:
http://airbnb.io/lottie/#/android
Github Code Link:
https://github.com/yasirtahir/MusicStationTV
Original Source

Expert: Consult with Doctors and Book an Appointment using Huawei User Address in Android App

Overview
In this article, I will create a Doctor Consult Demo App along with the integration of Huawei Id and HMS Core Identity. Which provides an easy interface to Book an Appointment with doctor. Users can choose specific doctors and get the doctor details using Huawei User Address.
By Reading this article, you'll get an overview of HMS Core Identity, including its functions, open capabilities, and business value.
HMS Core Identity Service Introduction
Hms Core Identity provides an easy interface to add or edit or delete user details and enables the users to authorize apps to access their addresses through a single tap on the screen. That is, app can obtain user addresses in a more convenient way.
Prerequisite
Huawei Phone EMUI 3.0 or later
Non-Huawei phones Android 4.4 or later (API level 19 or higher)
Android Studio
AppGallery Account
App Gallery Integration process
Sign In and Create or Choosea project on AppGallery Connect portal.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Navigate to Project settings and download the configuration file.
Navigate to General Information, and then provide Data Storage location.
App Development
1. Create A New Project.
2. Configure Project Gradle.
Code:
buildscript {
repositories {
google()
jcenter()
maven {url 'https://developer.huawei.com/repo/'}
}
dependencies {
classpath "com.android.tools.build:gradle:4.0.1"
classpath 'com.huawei.agconnect:agcp:1.4.2.300'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
maven {url 'https://developer.huawei.com/repo/'}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
3. Configure App Gradle.
Code:
apply plugin: 'com.android.application'
apply plugin: 'com.huawei.agconnect'
android {
compileSdkVersion 30
buildToolsVersion "29.0.3"
defaultConfig {
applicationId "com.hms.doctorconsultdemo"
minSdkVersion 27
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.3.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'androidx.cardview:cardview:1.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
//noinspection GradleCompatible
implementation 'com.android.support:recyclerview-v7:27.0.2'
implementation 'com.huawei.hms:identity:5.3.0.300'
implementation 'com.huawei.agconnect:agconnect-auth:1.4.1.300'
implementation 'com.huawei.hms:hwid:5.3.0.302'
}
4. Configure AndroidManifest.xml.
Code:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.hms.doctorconsultdemo">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".BookAppointmentActivity"></activity>
<activity android:name=".DoctorDetails" />
<activity android:name=".HomeActivity" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
5. Create Activity class with XML UI.
MainActivity:
This activity performs login with Huawei ID operation.
Code:
package com.hms.doctorconsultdemo;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import androidx.appcompat.app.AppCompatActivity;
import com.huawei.hmf.tasks.Task;
import com.huawei.hms.common.ApiException;
import com.huawei.hms.support.hwid.HuaweiIdAuthManager;
import com.huawei.hms.support.hwid.request.HuaweiIdAuthParams;
import com.huawei.hms.support.hwid.request.HuaweiIdAuthParamsHelper;
import com.huawei.hms.support.hwid.result.AuthHuaweiId;
import com.huawei.hms.support.hwid.service.HuaweiIdAuthService;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private static final int REQUEST_SIGN_IN_LOGIN = 1002;
private static String TAG = MainActivity.class.getName();
private HuaweiIdAuthService mAuthManager;
private HuaweiIdAuthParams mAuthParam;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button view = findViewById(R.id.btn_sign);
view.setOnClickListener(this);
}
private void signIn() {
mAuthParam = new HuaweiIdAuthParamsHelper(HuaweiIdAuthParams.DEFAULT_AUTH_REQUEST_PARAM)
.setIdToken()
.setAccessToken()
.createParams();
mAuthManager = HuaweiIdAuthManager.getService(this, mAuthParam);
startActivityForResult(mAuthManager.getSignInIntent(), REQUEST_SIGN_IN_LOGIN);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_sign:
signIn();
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_SIGN_IN_LOGIN) {
Task<AuthHuaweiId> authHuaweiIdTask = HuaweiIdAuthManager.parseAuthResultFromIntent(data);
if (authHuaweiIdTask.isSuccessful()) {
AuthHuaweiId huaweiAccount = authHuaweiIdTask.getResult();
Log.i(TAG, huaweiAccount.getDisplayName() + " signIn success ");
Log.i(TAG, "AccessToken: " + huaweiAccount.getAccessToken());
Intent intent = new Intent(this, HomeActivity.class);
intent.putExtra("user", huaweiAccount.getDisplayName());
startActivity(intent);
this.finish();
} else {
Log.i(TAG, "signIn failed: " + ((ApiException) authHuaweiIdTask.getException()).getStatusCode());
}
}
}
}
activity_main.xml:
Code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimaryDark">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:gravity="center">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Doctor Consult"
android:textAlignment="center"
android:textColor="@color/colorAccent"
android:textSize="34sp"
android:textStyle="bold" />
<Button
android:id="@+id/btn_sign"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginBottom="5dp"
android:background="@color/colorPrimary"
android:text="Login With Huawei Id"
android:textColor="@color/colorAccent"
android:textStyle="bold" />
</LinearLayout>
</ScrollView>
</RelativeLayout>
HomeActivity:
This activity displays list of type of treatments so that user can choose and book an appointment.
Code:
package com.hms.doctorconsultdemo;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
public class HomeActivity extends AppCompatActivity {
public static final String TAG = "Home";
private Toolbar mToolbar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
//init RecyclerView
initRecyclerViewsForPatient();
//Toolbar initialization
mToolbar = (Toolbar) findViewById(R.id.main_page_toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setTitle("Home");
// add back arrow to toolbar
if (getSupportActionBar() != null) {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
}
public void initRecyclerViewsForPatient() {
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.list);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getApplicationContext(), 2);
recyclerView.setLayoutManager(layoutManager);
ArrayList<PatientHomeData> list = new ArrayList();
list.add(new PatientHomeData("Cardiologist", R.drawable.ekg_2069872_640));
list.add(new PatientHomeData("Neurologist", R.drawable.brain_1710293_640));
list.add(new PatientHomeData("Oncologist", R.drawable.cancer));
list.add(new PatientHomeData("Pathologist", R.drawable.boy_1299626_640));
list.add(new PatientHomeData("Hematologist", R.drawable.virus_1812092_640));
list.add(new PatientHomeData("Dermatologist", R.drawable.skin));
PatientHomeViewAdapter adapter = new PatientHomeViewAdapter(getApplicationContext(), list);
recyclerView.setAdapter(adapter);
}
}
activity_home.xml:
Code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="@+id/main_page_toolbar"
layout="@layout/app_bar_layout" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/main_page_toolbar"
android:layout_alignParentLeft="true" />
</RelativeLayout>
BookAppointmentActivity:
This activity performs Huawei User Address so user can get an details.
Code:
package com.hms.doctorconsultdemo;
import android.app.Activity;
import android.content.Intent;
import android.content.IntentSender;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import com.huawei.hmf.tasks.OnFailureListener;
import com.huawei.hmf.tasks.OnSuccessListener;
import com.huawei.hmf.tasks.Task;
import com.huawei.hms.common.ApiException;
import com.huawei.hms.identity.Address;
import com.huawei.hms.identity.entity.GetUserAddressResult;
import com.huawei.hms.identity.entity.UserAddress;
import com.huawei.hms.identity.entity.UserAddressRequest;
import com.huawei.hms.support.api.client.Status;
public class BookAppointmentActivity extends AppCompatActivity {
private static final String TAG = "BookAppoinmentActivity";
private static final int GET_ADDRESS = 1000;
private TextView txtUser;
private TextView txtDesc;
private Button queryAddrButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_book_appointment);
txtUser = findViewById(R.id.txt_title);
txtDesc = findViewById(R.id.txt_desc);
queryAddrButton = findViewById(R.id.btn_get_address);
queryAddrButton.setOnClickListener(v -> {
getUserAddress();
});
}
private void getUserAddress() {
UserAddressRequest req = new UserAddressRequest();
Task<GetUserAddressResult> task = Address.getAddressClient(this).getUserAddress(req);
task.addOnSuccessListener(new OnSuccessListener<GetUserAddressResult>() {
@Override
public void onSuccess(GetUserAddressResult result) {
Log.i(TAG, "onSuccess result code:" + result.getReturnCode());
try {
startActivityForResult(result);
} catch (IntentSender.SendIntentException e) {
e.printStackTrace();
}
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception e) {
Log.i(TAG, "on Failed result code:" + e.getMessage());
if (e instanceof ApiException) {
ApiException apiException = (ApiException) e;
switch (apiException.getStatusCode()) {
case 60054:
Toast.makeText(getApplicationContext(), "Country not supported identity", Toast.LENGTH_SHORT).show();
break;
case 60055:
Toast.makeText(getApplicationContext(), "Child account not supported identity", Toast.LENGTH_SHORT).show();
break;
default: {
Toast.makeText(getApplicationContext(), "errorCode:" + apiException.getStatusCode() + ", errMsg:" + apiException.getMessage(), Toast.LENGTH_SHORT).show();
}
}
} else {
Toast.makeText(getApplicationContext(), "unknown exception", Toast.LENGTH_SHORT).show();
}
}
});
}
private void startActivityForResult(GetUserAddressResult result) throws IntentSender.SendIntentException {
Status status = result.getStatus();
if (result.getReturnCode() == 0 && status.hasResolution()) {
Log.i(TAG, "the result had resolution.");
status.startResolutionForResult(this, GET_ADDRESS);
} else {
Log.i(TAG, "the response is wrong, the return code is " + result.getReturnCode());
Toast.makeText(getApplicationContext(), "errorCode:" + result.getReturnCode() + ", errMsg:" + result.getReturnDesc(), Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.i(TAG, "onActivityResult requestCode " + requestCode + " resultCode " + resultCode);
switch (requestCode) {
case GET_ADDRESS:
switch (resultCode) {
case Activity.RESULT_OK:
UserAddress userAddress = UserAddress.parseIntent(data);
if (userAddress != null) {
StringBuilder sb = new StringBuilder();
sb.append(" " + userAddress.getPhoneNumber());
sb.append(" " + userAddress.getEmailAddress());
sb.append("\r\n" + userAddress.getCountryCode() + " ");
sb.append(userAddress.getAdministrativeArea());
if (userAddress.getLocality() != null) {
sb.append(userAddress.getLocality());
}
if (userAddress.getAddressLine1() != null) {
sb.append(userAddress.getAddressLine1());
}
sb.append(userAddress.getAddressLine2());
if (!"".equals(userAddress.getPostalNumber())) {
sb.append("\r\n" + userAddress.getPostalNumber());
}
Log.i(TAG, "user address is " + sb.toString());
txtUser.setText(userAddress.getName());
txtDesc.setText(sb.toString());
txtUser.setVisibility(View.VISIBLE);
txtDesc.setVisibility(View.VISIBLE);
} else {
txtUser.setText("Failed to get user Name");
txtDesc.setText("Failed to get user Address.");
Toast.makeText(getApplicationContext(), "the user address is null.", Toast.LENGTH_SHORT).show();
}
break;
default:
Log.i(TAG, "result is wrong, result code is " + resultCode);
Toast.makeText(getApplicationContext(), "the user address is null.", Toast.LENGTH_SHORT).show();
break;
}
default:
break;
}
}
}
activity_book_appointment.xml:
Code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimaryDark">
<include
android:id="@+id/main_page_toolbar"
layout="@layout/app_bar_layout" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_margin="30dp"
android:background="@color/colorAccent"
android:orientation="vertical"
android:padding="25dp">
<TextView
android:id="@+id/txt_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Mr Doctor"
android:textAlignment="center"
android:visibility="gone"
android:textColor="@color/colorPrimaryDark"
android:textSize="30sp"
android:textStyle="bold" />
<TextView
android:id="@+id/txt_desc"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone"
android:text="Details"
android:textAlignment="center"
android:textColor="@color/colorPrimaryDark"
android:textSize="24sp"
android:textStyle="normal" />
<Button
android:id="@+id/btn_get_address"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginBottom="5dp"
android:background="@color/colorPrimary"
android:text="Get Huawei User Address"
android:textColor="@color/colorAccent"
android:textStyle="bold" />
</LinearLayout>
</RelativeLayout>
App Build Result
Tips and Tricks
Identity Kit displays the HUAWEI ID registration or sign-in page first. The user can use the functions provided by Identity Kit only after signing in using a registered HUAWEI ID.
A maximum of 10 user addresses are allowed.
If HMS Core (APK) is installed on a mobile phone, check the version. If the version is earlier than 4.0.0, upgrade it to 4.0.0 or later. If the version is 4.0.0 or later, you can call the HMS Core Identity SDK to use the capabilities.
Conclusion
In this article, we have learned how to integrate HMS Core Identity in Android application. After completely read this article user can easily implement Huawei User Address APIs by HMS Core Identity So that User can book appointment with Huawei User Address.
Thanks for reading this article. Be sure to like and comment to this article, if you found it helpful. It means a lot to me.
References
HMS Identity Docs: https://developer.huawei.com/consumer/en/hms/huawei-identitykit/
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