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HI i wana created animation efect with ImageView from dynamically generated Bitmaps.
I did that with Habdlers, and it works quite niece (60FPS) but i have problem with blinking of ImageView's, where images appears on 1ms and then rapidly disappear so it is look owful. What im doing wrong ??? Please for help...
Here is my code:
Code:
private final Runnable UpdateImg = new Runnable()
{
public void run()
{
Update();
HandlerUpdate.post(UpdateImg);
}
};
private void Update()
{
byte[] buffer = MyCreatorClass.GetNextFrame(); //Creating Bitmap
ImgViewMain.setImageBitmap(BitmapFactory.decodeByteArray(buffer, 0, buffer.length)); //Display my Image
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
[ ... ... ... ... ...]
HandlerUpdate.post(UpdateImg);
}
Well... I am trying to create an application using the TTS Engine.
I can already make it, work, no problem. However I need my buttons to be dinamic, they will come from a database.
**So far you guys have helped me a lot, since now I can do it thanks to the tips I got from you guys.**
**Well.. now I am stuck again.**
Every new button that I create I attach an OnClickListener so it can start the TTS and speak something.
However it's an inner method, so, when I try to run the code below, it gives me a NullPointerException when it tries to "speak" using the TTS. I know the TTS object is out of context, so, **How can I solve this?**
Below the code. It's a little big since I wanted to include everything:
PLEASE JUMP TO THE "HERE IS MY PROBLEM!!!" comment so you guys can see exactly where my problem is. I know where it is, but I don't know how to solve it =(
Any help is appreciatted! =)
Code:
public class LivoxTesteActivity extends Activity implements OnInitListener{
/** Called when the activity is first created. */
private int MY_DATA_CHECK_CODE = 0;
public TextToSpeech tts;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
LinearLayout lgeral = new LinearLayout (this);
lgeral.setOrientation(LinearLayout.VERTICAL);
lgeral.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, 1f));
String array[][] = {{"Comer","eat", "Eu quero comer", "1"},
{"Abraço","hug", "Eu quero um abraço", "2"},
{"Assustado","afraid", "Eu estou com medo", "3"},
{"Beber","drink", "Eu quero beber", "4"}};
int x = array.length;
int qtdeLinhas = 2;
for (int j = 0; j < qtdeLinhas; j++) {
LinearLayout l1 = new LinearLayout (this);
l1.setOrientation(LinearLayout.HORIZONTAL);
l1.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, 1f));
FrameLayout fl;
for (int i = 0; i < array.length; i++) {
fl = (FrameLayout)LayoutInflater.from(getBaseContext()).inflate(R.layout.framelayoutstyle, l1, false);
TextView textoEscrito;
textoEscrito = (TextView)LayoutInflater.from(getBaseContext()).inflate(R.layout.textviewstyle, fl, false);
textoEscrito.setText(array[i][0]);
final String texto = textoEscrito.getText().toString();
final String textoFalar = array[i][2];
ImageButton btn;
btn = (ImageButton)LayoutInflater.from(getBaseContext()).inflate(R.layout.imagebuttonstyle, fl, false);
btn.setImageResource(this.getResources().getIdentifier("drawable/" + array[i][1], null, this.getPackageName()));
btn.setOnClickListener(new Button.OnClickListener(){
public void onClick (View v){
Toast.makeText(getBaseContext(), texto, Toast.LENGTH_SHORT).show();
//*******************************
//HERE IS MY PROBLEM!!!
//*******************************
tts.speak(txtFl, TextToSpeech.QUEUE_ADD, null);
//*******************************
//WHEN I TRY TO RUN THE ABOVE IT GIVES A NULLPOINTEREXCEPTION!!!
//*******************************
}
});
fl.addView(btn);
fl.addView(textoEscrito);
l1.addView(fl);
}
lgeral.addView(l1);
}
setContentView(lgeral);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == MY_DATA_CHECK_CODE) {
if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
// success, create the TTS instance
tts = new TextToSpeech(this, this);
}
else {
// missing data, install it
Intent installIntent = new Intent();
installIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
startActivity(installIntent);
}
}
}
@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
}
else if (status == TextToSpeech.ERROR) {
}
}
@Override
public void onDestroy() {
if (tts != null) {
tts.stop();
tts.shutdown();
}
super.onDestroy();
}
}
By the way... the method Toast.makeText(getBaseContext(), texto, Toast.LENGTH_SHORT).show(); works fine. I believe that's because the Toast is a static class.
So, maybe the solution is to create a static class with the method to speak? Ideas? How can I do it?
Questions or Problems Should Not Be Posted in the Development Forum
Please Post in the Correct Forums
Moving to Q&A
Hi, this is actually 2 questions.
I have a list of items stored in one string array and a list of the collections those items are in stored in a second string array.
I want the user to be able to search for an item and see in which collection it exists.
I have managed to do this in a less-than-elegant way by simply combining the 2 string arrays into one and using a ListView with a EditText with a TextWatcher to filter the results. This all works but the result is not so eye-pleasing. I use this to make the distinction between item and collections:
Code:
<item>ITEM \r\n -> COLLECTION(S)
when defining the string array.
As I said, it works but I would like the COLLECTION(S) to be formatted differently from the ITEM. Is this possible in a ListView?
This is my current code:
Code:
public class Search extends Activity {
/** Called when the activity is first created. */
private ListView lv1;
private EditText ed;
private String[] lv_arr;
private ArrayList<String> arr_sort= new ArrayList<String>();
int textlength=0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search);
lv1=(ListView)findViewById(R.id.listView1);
ed=(EditText)findViewById(R.id.editText1);
lv_arr = getResources().getStringArray(R.array.all_cont);
lv1.setAdapter(new ArrayAdapter<String>(this, R.layout.row , lv_arr));
ed.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
textlength=ed.getText().length();
arr_sort.clear();
for(int i=0;i<lv_arr.length;i++)
{
if(textlength<=lv_arr[i].length())
{
if(ed.getText().toString().equalsIgnoreCase((String) lv_arr[i].subSequence(0, textlength)))
{
arr_sort.add(lv_arr[i]);
}}}
lv1.setAdapter(new ArrayAdapter<String>(Search.this, R.layout.row , arr_sort));
}
});
}}
As a second solution that looks more elegant, I used a SimpleAdapter to put the 2 original string arrays in the ListView like this:
Code:
public class Search extends ListActivity {
private String[] l1;
private String[] l2;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.seach);
ArrayList<Map<String, String>> list = buildData();
String[] from = { "name", "packs" };
int[] to = { android.R.id.text1, android.R.id.text2 };
SimpleAdapter adapter = new SimpleAdapter(this, list, android.R.layout.simple_list_item_2, from, to);
setListAdapter(adapter);}
private ArrayList<Map<String, String>> buildData() {
l1 = getResources().getStringArray(R.array.items);
l2 = getResources().getStringArray(R.array.packs);
Integer i;
int to = l1.length;
ArrayList<Map<String, String>> list = new ArrayList<Map<String, String>>();
for(i=0;i < to;i++){
list.add(putData(l1[i], l2[i]));
}
return list;
}
private HashMap<String, String> putData(String name, String packs) {
HashMap<String, String> item = new HashMap<String, String>();
item.put("name", name);
item.put("packs", packs);
return item;
}
}
This looks a lot better but I can't figure out how to make use of the EditText to filter the results.
Any help is welcomed!
Hey!
I read your post and I think it would be better to make a class like this:
Code:
public class ListItem
{
public String itemName;
public String collectionName;
}
And then in your Search activity you can Make a single ArrayList of the type ListItem. Populate this array in a way similar to how you are populating the ArrayList of the HashMaps.
Now for setting the ListAdapter you'll have to make a custom view for each row of the list(this custom row could contain two text views, one for the item name and the other for the collection and you can give them their own formatting), and then subclass the ArrayAdapter class and override its getView method.
Heres a couple of links that might be helpful:
http://www.ezzylearning.com/tutoria...droid-listview-items-with-custom-arrayadapter
http://stackoverflow.com/questions/2265661/how-to-use-arrayadaptermyclass
Hope this helps
The_R said:
Hey!
I read your post and I think it would be better to make a class like this:
Code:
public class ListItem
{
public String itemName;
public String collectionName;
}
And then in your Search activity you can Make a single ArrayList of the type ListItem. Populate this array in a way similar to how you are populating the ArrayList of the HashMaps.
Now for setting the ListAdapter you'll have to make a custom view for each row of the list(this custom row could contain two text views, one for the item name and the other for the collection and you can give them their own formatting), and then subclass the ArrayAdapter class and override its getView method.
Heres a couple of links that might be helpful:
http://www.ezzylearning.com/tutoria...droid-listview-items-with-custom-arrayadapter
http://stackoverflow.com/questions/2265661/how-to-use-arrayadaptermyclass
Hope this helps
Click to expand...
Click to collapse
Thanks once more. I looked over the links and I think I have an idea of how to adapt it to my app. Will try it tomorrow and let you know
Yeah. Let me know if it worked.
The_R said:
Yeah. Let me know if it worked.
Click to expand...
Click to collapse
I feel like my head is exploding.
I did what you said but I still have some issues. Here's what I did:
1. Created a new class, Icons:
Code:
public class Icons {
public String icon;
public String title;
public Icons(){
super();
}
public Icons(String icon, String title) {
super();
this.icon = icon;
this.title = title;
}
}
Created a new XML for the style of the ListView:
Code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/icon_name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="3dp"
android:textSize="18sp"
android:textColor="#ffffff"
android:textStyle="bold" />
<TextView
android:id="@+id/in_pack"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:textSize="12sp" />
</LinearLayout>
created a new Adapter:
Code:
public class IconsAdapter extends ArrayAdapter<Icons>{
Context context;
int layoutResourceId;
Icons data[] = null;
public IconsAdapter(Context context, int layoutResourceId, Icons[] data) {
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
IconsHolder holder = null;
if(row == null)
{
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new IconsHolder();
holder.txtIcon = (TextView)row.findViewById(R.id.icon_name);
holder.txtTitle = (TextView)row.findViewById(R.id.in_pack);
row.setTag(holder);
}
else
{
holder = (IconsHolder)row.getTag();
}
Icons icons = data[position];
holder.txtTitle.setText(icons.title);
holder.txtIcon.setText(icons.icon);
return row;
}
static class IconsHolder
{
TextView txtIcon;
TextView txtTitle;
}
}
Modified my Search class like this:
Code:
public class Search extends Activity {
private ListView listView1;
private String[] l1;
private String[] l2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.seach);
l1 = getResources().getStringArray(R.array.items);
l2 = getResources().getStringArray(R.array.packs);
Integer i;
int to = l1.length;
// for(i=0;i < to;i++){}
Icons Icons_data[] = new Icons[]
{
new Icons(l1[0], l2[0]),
new Icons(l1[1], l2[1]),
new Icons(l1[2], l2[2]),
new Icons(l1[3], l2[3]),
};
IconsAdapter adapter = new IconsAdapter(this,
R.layout.row, Icons_data);
listView1 = (ListView)findViewById(R.id.listView1);
View header = (View)getLayoutInflater().inflate(R.layout.row, null);
listView1.addHeaderView(header);
listView1.setAdapter(adapter);
}
}
Up until now, everything works (almost) great. Only thing I can't do is figure out how to assign the items in the Icons_data[] array automatically (my for(...) statement doesn't seem to want to fit anywhere). Format looks good and manually inserting data does what it's supposed to. Still need to figure out the automatic data inserting thing...my arrays have 100-150 elements
What I also can't figure out is how the hell to perform the filtering/search on this new special Array... I tried using the old method with the TextWatcher on an EditText field but can't seem to be able to adapt this part:
Code:
public void onTextChanged(CharSequence s, int start, int before,
int count) {
textlength=ed.getText().length();
[B][U]arr_sort.clear();[/U][/B]
for(int i=0;i<to;i++)
{
if(textlength<=l1[i].length())
{
if(ed.getText().toString().equalsIgnoreCase((String) l1[i].subSequence(0, textlength)))
{
[B][U]arr_sort.add(l1[i]);[/U][/B]
}
}
}
[B][U]lv1.setAdapter(new ArrayAdapter<String>(Search.this, R.layout.row , arr_sort))[/U][/B];
}
});
ed is the EditText item. I guess I would need to make arr_sort of the type Icons[] and then change the Bold, Underlined lines to something...but no idea what... Is it even possible to do it like i'm doing it? Or should I look for another method to sort it?
Hey I modified your search class:
Code:
public class Search extends Activity {
private ListView listView1;
// Note: I've removed the two String[] class members cause we are going
// store this data in a single Icons[] member
private Icons[] iconsData;
private ArrayList<Icons> arr_sort; // Note: Changed the type of arr_sort
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.seach);
// We'll create two local String[] variables to assemble the data
String[] l1 = getResources().getStringArray(R.array.items);
String[] l2 = getResources().getStringArray(R.array.packs);
// get the total number of icons
int totalIcons = l1.length;
// Allocate the data for the Icon[] array
iconsData = new Icons[totalIcons];
// Now to populate the Icon array
for (int i = 0; i < totalIcons; i++)
{
iconsData[i] = new Icons(l1[i], l2[i]);
}
// Rest remains the same
IconsAdapter adapter = new IconsAdapter(this,
R.layout.row, iconsData);
listView1 = (ListView)findViewById(R.id.listView1);
View header = (View)getLayoutInflater().inflate(R.layout.row, null);
listView1.addHeaderView(header);
listView1.setAdapter(adapter);
}
}
Now you don't need to change the sorting method. Just slight modifications to fit the data structuring is all that is needed.
Code:
public void onTextChanged(CharSequence s, int start, int before, int count)
{
textlength = ed.getText().length();
arr_sort.clear();
for(int i = 0 ; i < to; i++)
{
if(textlength <= iconsData[i].icon.length()) //Note: l1 becomes iconsData[i].icon
{
if(ed.getText().toString().equalsIgnoreCase((String) iconsData[i].icon.subSequence(0, textlength)))
{
arr_sort.add(iconsData[i]); // Note: we'll store iconsData[i] if a match is found
}
}
}
lv1.setAdapter(new IconsAdapter(Search.this, R.layout.row , arr_sort.toArray()));
}
Haven't tested it. So watch out for some possible errors.
I can't thank you enough but I still need your help.
The first part works (modifications to the Search class).
Now, In the same class, after that part, I add the filtering part:
Code:
ed=(EditText)findViewById(R.id.editText1);
ed.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count, int after)
{
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
int textlength = ed.getText().length();
arr_sort.clear();
for(int i=0;i<[B][I]totalIcons[/I][/B];i++)
{
if(textlength <= iconsData[i].icon.length()) //Note: l1 becomes iconsData[i].icon
{
if(ed.getText().toString().equalsIgnoreCase((String) iconsData[i].icon.subSequence(0, textlength)))
{
arr_sort.add(iconsData[i]); // Note: we'll store iconsData[i] if a match is found
}
}
}
listView1.setAdapter(new IconsAdapter(Search.this, R.layout.row , [U][B](Icons[])[/B][/U] arr_sort.toArray()));
}
});
}
}
I had to make 2 changes in order for it not to give any errors. First, I changed the "to" in the for statement to "totalIcons" since that's actually the number we need and "to" was not defined. When I did this I also had to change "totalIcons" to final int since I had this error:"Cannot refer to a non-final variable totalIcons inside an inner class defined in a different method"
Also, I had to add the (Icons[]) at the end because of this error: "The constructor IconsAdapter(Search, int, Object[]) is undefined". The suggested fixes was changing the constructor for IconsAdapter, adding a new constructor or adding the (Icons[]) thing.
Now I have no errors in Eclipse but when I run the app and try to type something in the EditText box the app crashes...I get these errors:
04-12 19:32:27.032: E/AndroidRuntime(998): FATAL EXCEPTION: main
04-12 19:32:27.032: E/AndroidRuntime(998): java.lang.NullPointerException
04-12 19:32:27.032: E/AndroidRuntime(998): at mmarin.iconpack.manager.Search$1.onTextChanged(Search.java:70)
04-12 19:32:27.032: E/AndroidRuntime(998): at android.widget.TextView.sendOnTextChanged(TextView.java:6295)
04-12 19:32:27.032: E/AndroidRuntime(998): at android.widget.TextView.handleTextChanged(TextView.java:6336)
04-12 19:32:27.032: E/AndroidRuntime(998): at android.widget.TextView$ChangeWatcher.onTextChanged(TextView.java:6485)
04-12 19:32:27.032: E/AndroidRuntime(998): at android.text.SpannableStringBuilder.sendTextChange(SpannableStringBuilder.java:889)
Sorry about the previous untested code. I was in a rush to go somewhere but I saw you online and thought that it'd be better if I replied.
Anyways, I think the problem is that "totalIcons" is a local variable. So remove the final keyword. And in the for loop in the TextWatcher's onTextChanged method instead of using totalIcons use the length property of iconsData:
Code:
for (int i = 0; i < iconsData.length; i++)
Should fix the runtime error
First off, please do all the things you have to do and don't waste your time with me. I really really appreciate you trying to help me so if you don't have time for this, it's absolutely no problem.
Now, the runtime errors are still there after the change
04-12 19:59:24.332: E/AndroidRuntime(1034): FATAL EXCEPTION: main
04-12 19:59:24.332: E/AndroidRuntime(1034): java.lang.NullPointerException
04-12 19:59:24.332: E/AndroidRuntime(1034): at mmarin.iconpack.manager.Search$1.onTextChanged(Search.java:70)
04-12 19:59:24.332: E/AndroidRuntime(1034): at android.widget.TextView.sendOnTextChanged(TextView.java:6295)
04-12 19:59:24.332: E/AndroidRuntime(1034): at android.widget.TextView.handleTextChanged(TextView.java:6336)
04-12 19:59:24.332: E/AndroidRuntime(1034): at android.widget.TextView$ChangeWatcher.onTextChanged(TextView.java:6485)
04-12 19:59:24.332: E/AndroidRuntime(1034): at mmarin.iconpack.manager.Search$1.onTextChanged(Sea rch.java:70)
Can you paste line 70 of Search.java?
Wait are you doing this in onCreate?
Code:
arr_sort = new ArrayList<Icons>();
That's what I was looking for (actually how to enable line numbers in Eclipse )
here it is:
Code:
arr_sort.clear();
Yep. We aren't creating arr_sort. So its a null pointer.
Do this somewhere in onCreate
Code:
arr_sort = new ArrayList<Icons>();
ok, that solved that issue. now the problem is with this:
Code:
listView1.setAdapter(new IconsAdapter(Search.this, R.layout.row, (Icons[]) arr_sort.toArray()));
What error/exception do you get?
04-12 20:17:26.663: E/AndroidRuntime(1205): FATAL EXCEPTION: main
04-12 20:17:26.663: E/AndroidRuntime(1205): java.lang.ClassCastException: [Ljava.lang.Object;
04-12 20:17:26.663: E/AndroidRuntime(1205): at mmarin.iconpack.manager.Search$1.onTextChanged(Search.java:84)
I guess that the arr_sort.toArray() creates an Object[] but we need a Icons[] resource for the IconsAdapter.
Am I close?
Yea you are right
One quick and ugly solution I can think of is maybe creating an Icons array right after the search and then filling it with all the items in the arraylist. This happens right before you are setting the adapter
Code:
Icons[] data = new Icons[arr_data.size()];
for (int i = 0; i < arr_data.size(); i++)
{
data[i] = arr_data.get(i);
}
listView1.setAdapter(new IconsAdapter(Search.this, R.layout.row, data));
This should work but it isn't really a good solution =/
Quick and ugly works for me! You're 3 for 3!
You get a big special thanks in my App!!!
Once more, thank you and probably I will ask for your help again in a short while, with another issue I can't figure out.
It will probably be about getting a market link for an app through the Share menu in the Play Store and using that information to send an e-mail - but I will try to figure it out for myself . I already found how to get my app in the "Share" menu in the Play Store and also (possibly) how to save that information to a string. Now i have to find out how to actually get my app to start a certain Activity when it is started by the Play Store app. Will do that over the weekend
Sure! I'll be happy to help out with whatever little bit know!
Hi,
I searched for a part to ask questions abut android programing but cant find so I posted here,I hope I can find my answer
I am new with android programing and I have a problem with expandable list view
I pupulate my data to an expandable list view with SimpleExpandableListAdapter and every thing is good..The only think I want is to findout which Items is selected by user..I searched but Cant fine a working method to do this
here Is my SimpleExpandableListAdapter
Code:
SimpleExpandableListAdapter expListAdapter =
new SimpleExpandableListAdapter(
this,
groupData,
android.R.layout.simple_expandable_list_item_1,
new String[] { "grup"},
new int[] { android.R.id.text1 },
childData,
R.layout.database_list_item,
new String[] { parser.KEY_CatName, parser.KEY_PoetID, parser.KEY_DownloadUrl,parser.KEY_PubDate,parser.KEY_FileSizeInByte,"Status"},
new int[] { R.id.chk_database_list_item,R.id.txt_database_poet_id,R.id.txt_database_download_link,R.id.txt_database_pub_date,R.id.txt_database_size,R.id.txt_database_status }
);
and here Is setOnChildClickListener but It dont do anything
Code:
ExpandList.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView arg0, View v, int arg2,
int arg3, long arg4) {
Log.i("setOnChildClickListener", "setOnChildClickListener");
TextView down_link = (TextView) v.findViewById(R.id.txt_database_download_link);
TextView poet_id = (TextView) v.findViewById(R.id.txt_database_poet_id);
String down_linkString;
String poet_idString;
SparseBooleanArray choices = arg0.getCheckedItemPositions();
StringBuilder choicesString = new StringBuilder();
for (int i = 0; i < choices.size(); i++)
{
//added if statement to check for true. The SparseBooleanArray
//seems to maintain the keys for the checked items, but it sets
//the value to false. Adding a boolean check returns the correct result.
//ArrayList<String> Items_for_download = new ArrayList<String>();
if(choices.valueAt(i) == true)
choicesString.append(poet_id.getText().toString()).append(" ");
}
Log.i("selected", choicesString.toString());
return false;
}
});
Thanks for your helps
I'm new to android,stuck in this part of my code.
I do hope, someone would help me with it.
As ,I've stuck for quite a while and have to complete within 2 days,
If I would like to filter in spinner based on the dates, how should I do it? For example,
I've a list of events, and in my spinner
when I select "Today", it will show out the list for today.
I've tried out the coding, however, I met some error. The part in BOLD, ** is having error.
I would like to get the XML data from here:
[attached in this thread]
the highlighted part
here is my coding: AndroidXMLParsingActivity.java
public class AndroidXMLParsingActivity extends ListActivity implements OnItemSelectedListener {
String[] browseby;
String[] dates = { "Today", "Tomorrow", "Next Week",
};
ArrayList<String> browse = new ArrayList<String>();
ArrayList<String> mPostingData = new ArrayList<String>();
Spinner s1;
ListView listview;
CustomAdapter cus;
// All static variables
static final String URL = " URL ";
// XML node keys
static final String KEY_EVENT = "event"; // parent node
static final String KEY_TITLE = "title";
static final String KEY_START_TIME = "start_time";
@override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_EVENT);
// looping through all item nodes <item>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_START_TIME, parser.getValue(e, KEY_START_TIME));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.list_item, new String[] { KEY_TITLE,KEY_START_TIME }, new int[] {
R.id.title,
R.id.startTime });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
@override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String title = ((TextView) view.findViewById(R.id.title))
.getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(),
SingleMenuItemActivity.class);
in.putExtra(KEY_TITLE, title);
startActivity(in);
}
});
listview = (ListView) findViewById(R.id.listView1);
s1 = (Spinner) findViewById(R.id.spinner1);
for (int i = 0; i < browseby.length; i++) {
browse.add(browseby);
}
// aa = new
// ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,Category);
s1.setOnItemSelectedListener(this);
mPostingData = browse;
for (int i = 0; i < mPostingData.size(); i++) {
if (mPostingData.size() > 0)
Log.i("Datas", mPostingData.get(i));
}
cus = new CustomAdapter(this, 0);
setListAdapter(cus);
ArrayAdapter<String> aa = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, dates);
aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
s1.setAdapter(aa);
}
public void onItemSelected(AdapterView<?> parent, View v, int position,
long id) {
// listview.setFilterText(Category[position]);
String Text = s1.getSelectedItem().toString();
cus.getFilter().filter(Text);
cus.notifyDataSetChanged();
}
public void onNothingSelected(AdapterView<?> parent) {
// listview.setFilterText("");
}
public void onListItemClick(ListView parent, View v, int position, long id) {
Toast.makeText(this, "You have selected " + mPostingData.get(position),
Toast.LENGTH_SHORT).show();
}
class CustomAdapter extends ArrayAdapter<String> {
public void setData(ArrayList<String> mPpst) {
mPostingData = mPpst;// contains class items data.
}
@override
******public Filter getFilter() {
return new Filter() {
@override
protected void publishResults(CharSequence constraint,
FilterResults start_time) {
if (start_time.equals("2013-09-25") {
setData((ArrayList<String>) start_time.values);
} else {
setData(browse);// set original values
}
notifyDataSetInvalidated();
}******
@override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults result = new FilterResults();
if (!TextUtils.isEmpty(constraint)) {
constraint = constraint.toString();
ArrayList<String> foundItems = new ArrayList<String>();
if (browse != null) {
for (int i = 0; i < browse.size(); i++) {
if (browse.get(i).contains(constraint)) {
System.out.println("My datas" + browse.get(i));
foundItems.add(browse.get(i));
} else {
}
}
}
result.count = foundItems.size();// search results found
// return count
result.values = foundItems;// return values
} else {
result.count = -1;// no search results found
}
return result;
}
};
}
LayoutInflater mInflater;
public CustomAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
// TODO Auto-generated constructor stub
mInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@override
public int getCount() {
// TODO Auto-generated method stub
return mPostingData.size();
}
@override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder vh;
if (convertView == null) {
vh = new ViewHolder();
convertView = mInflater.inflate(R.layout.row, null);
vh.t1 = (TextView) convertView.findViewById(R.id.textView1);
convertView.setTag(vh);
} else {
// Get the ViewHolder back to get fast access to the TextView
// and the ImageView.
vh = (ViewHolder) convertView.getTag();
}
if (mPostingData.size() > 0)
vh.t1.setText(mPostingData.get(position));
return convertView;
}
}
static class ViewHolder {
TextView t1;
}
}
randomise said:
I'm new to android,stuck in this part of my code.
I do hope, someone would help me with it.
As ,I've stuck for quite a while and have to complete within 2 days,
If I would like to filter in spinner based on the dates, how should I do it? For example,
I've a list of events, and in my spinner
when I select "Today", it will show out the list for today.
I've tried out the coding, however, I met some error. The part in BOLD, ** is having error.
I would like to get the XML data from here:
[attached in this thread]
the highlighted part
here is my coding: AndroidXMLParsingActivity.java
public class AndroidXMLParsingActivity extends ListActivity implements OnItemSelectedListener {
String[] browseby;
String[] dates = { "Today", "Tomorrow", "Next Week",
};
ArrayList<String> browse = new ArrayList<String>();
ArrayList<String> mPostingData = new ArrayList<String>();
Spinner s1;
ListView listview;
CustomAdapter cus;
// All static variables
static final String URL = " URL ";
// XML node keys
static final String KEY_EVENT = "event"; // parent node
static final String KEY_TITLE = "title";
static final String KEY_START_TIME = "start_time";
@override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_EVENT);
// looping through all item nodes <item>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_START_TIME, parser.getValue(e, KEY_START_TIME));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.list_item, new String[] { KEY_TITLE,KEY_START_TIME }, new int[] {
R.id.title,
R.id.startTime });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
@override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String title = ((TextView) view.findViewById(R.id.title))
.getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(),
SingleMenuItemActivity.class);
in.putExtra(KEY_TITLE, title);
startActivity(in);
}
});
listview = (ListView) findViewById(R.id.listView1);
s1 = (Spinner) findViewById(R.id.spinner1);
for (int i = 0; i < browseby.length; i++) {
browse.add(browseby);
}
// aa = new
// ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,Category);
s1.setOnItemSelectedListener(this);
mPostingData = browse;
for (int i = 0; i < mPostingData.size(); i++) {
if (mPostingData.size() > 0)
Log.i("Datas", mPostingData.get(i));
}
cus = new CustomAdapter(this, 0);
setListAdapter(cus);
ArrayAdapter<String> aa = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, dates);
aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
s1.setAdapter(aa);
}
public void onItemSelected(AdapterView<?> parent, View v, int position,
long id) {
// listview.setFilterText(Category[position]);
String Text = s1.getSelectedItem().toString();
cus.getFilter().filter(Text);
cus.notifyDataSetChanged();
}
public void onNothingSelected(AdapterView<?> parent) {
// listview.setFilterText("");
}
public void onListItemClick(ListView parent, View v, int position, long id) {
Toast.makeText(this, "You have selected " + mPostingData.get(position),
Toast.LENGTH_SHORT).show();
}
class CustomAdapter extends ArrayAdapter<String> {
public void setData(ArrayList<String> mPpst) {
mPostingData = mPpst;// contains class items data.
}
@override
******public Filter getFilter() {
return new Filter() {
@override
protected void publishResults(CharSequence constraint,
FilterResults start_time) {
if (start_time.equals("2013-09-25") {
setData((ArrayList<String>) start_time.values);
} else {
setData(browse);// set original values
}
notifyDataSetInvalidated();
}******
@override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults result = new FilterResults();
if (!TextUtils.isEmpty(constraint)) {
constraint = constraint.toString();
ArrayList<String> foundItems = new ArrayList<String>();
if (browse != null) {
for (int i = 0; i < browse.size(); i++) {
if (browse.get(i).contains(constraint)) {
System.out.println("My datas" + browse.get(i));
foundItems.add(browse.get(i));
} else {
}
}
}
result.count = foundItems.size();// search results found
// return count
result.values = foundItems;// return values
} else {
result.count = -1;// no search results found
}
return result;
}
};
}
LayoutInflater mInflater;
public CustomAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
// TODO Auto-generated constructor stub
mInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@override
public int getCount() {
// TODO Auto-generated method stub
return mPostingData.size();
}
@override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder vh;
if (convertView == null) {
vh = new ViewHolder();
convertView = mInflater.inflate(R.layout.row, null);
vh.t1 = (TextView) convertView.findViewById(R.id.textView1);
convertView.setTag(vh);
} else {
// Get the ViewHolder back to get fast access to the TextView
// and the ImageView.
vh = (ViewHolder) convertView.getTag();
}
if (mPostingData.size() > 0)
vh.t1.setText(mPostingData.get(position));
return convertView;
}
}
static class ViewHolder {
TextView t1;
}
}
Click to expand...
Click to collapse
Can someone please help me out?
your help will be appreciated.
Thanks