whit ANDROID previous kitkat I was able to store an image on sd-card without problem, now, instead, I've a lot of difficult.
I can't understand how use a new Access Store Framework of Android Lollipop and I don't know if it is useful to case of mine.
This code below is a part of my project and it's worked perfectly
Code:
private Bitmap getBitmap(String url, String image){
String root = Environment.getExternalStorageDirectory().toString();
root = "/mnt/extSdCard/";
Bitmap bitmap = null;
File f=fileCache.getFile(url);
//from SD cache
bitmap = decodeFile(f);
if(bitmap!=null)
return bitmap;
try{
bitmap = BitmapFactory.decodeFile(root + image);
if(bitmap!=null){
return bitmap;
}
}catch (Exception e) {
e.printStackTrace();
}
//from web
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
Foto foto = new Foto();
try {
try{
foto = new ObjectMapper().readValue(new URL("........."),
Foto.class);
if(foto!=null){
String[] values = image.split("/");
File dir = new File(root + values[0]);
if (!dir.exists()) {
dir.mkdir();
String fname = values[1];
File file = new File (dir, fname);
bitmap = BitmapFactory.decodeByteArray(foto.getFoto(), 0, foto.getFoto().length);
try {
FileOutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}else{
String fname = values[1];
File file = new File (dir, fname);
bitmap = BitmapFactory.decodeByteArray(foto.getFoto(), 0, foto.getFoto().length);
try {
FileOutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
//bitmap = decodeFile(f);
return bitmap;
}else{
return bitmap;
}
}catch(Exception e){
e.printStackTrace();
return null;
}
} catch (Exception ex){
if (ex instanceof SQLiteConstraintException){
bitmap = BitmapFactory.decodeByteArray(foto.getFoto(), 0, foto.getFoto().length);
return bitmap;
}else{
ex.printStackTrace();
return null;
}
}
}else{
return bitmap;
}
}
If I use `Environment.getExternalStorageDirectory().getAbsolutePath();` I can't get path of sd-card.
Thanks
Related
Hi,
I've been developing a rss reader which needs to make a mutal ssl authentication. Ive managed to get the user certificate using the Keychain API and have got what seems to a mostly working SSLSocketFactory. But whenever i try to make a connection to the server i get a 401 Unauthorized error, i feel its probably something to do with the way i am setting up my SSL Connection and my general code. If anyone can help point out what im doing wrong and what i need to do i would be very appreciative.
Main Activity:
public class AliasLoader extends AsyncTask<Void, Void, X509Certificate[]>
{
X509Certificate[] chain = null;
@Override protected X509Certificate[] doInBackground(Void... params) {
android.os.Debug.waitForDebugger();
if(!SavedAlias.isEmpty())
{
try {
PrivateKey key2 = KeyChain.getPrivateKey(getApplicationContext(), SavedAlias);
setPrivateKey(key2);
chain = KeyChain.getCertificateChain(getApplicationContext(),SavedAlias);
setCertificate(chain);
} catch (Exception e) {
Log.e(TAG, e.getMessage());
}
}
else
{
this.cancel(true);
}
return chain;
}
@Override
protected void onPostExecute(X509Certificate[] chain)
{
if(chain != null)
{
HttpClient client = CustomSSLSocketFactory.getNewHttpClient(context, getAlias(), chain, key);
String formDataServiceUrl = "https://android.diif.r.mil.uk";
WebView wv = (WebView) findViewById(R.id.rssFeedItemView);
HttpPost post = new HttpPost(formDataServiceUrl);
final HttpGet request = new HttpGet(formDataServiceUrl);
HttpResponse result = null;
try {
result = client.execute(post);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
wv.loadUrl(formDataServiceUrl);
}
else
{
Toast.makeText(getApplicationContext(), "Certificate is Empty", Toast.LENGTH_LONG).show();
}
}
}
CustomSSLSocketFactory:
public class CustomSSLSocketFactory extends SSLSocketFactory {
public static KeyStore rootCAtrustStore = null;
public static KeyStore clientKeyStore = null;
SSLContext sslContext = SSLContext.getInstance("TLS");
Context context;
/**
* Constructor.
*/
public CustomSSLSocketFactory(Context context, KeyStore keystore, String keyStorePassword, KeyStore truststore)
throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException {
super(keystore, keyStorePassword, truststore);
this.context = context;
// custom TrustManager,trusts all servers
X509TrustManager tm = new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] xcs, String string) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] xcs, String string) throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return null;
}
};
Log.i("CLIENT CERTIFICATES", "Loaded client certificates: " + keystore.size());
// initialize key manager factory with the client certificate
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
keyManagerFactory.init(keystore,null);
sslContext.init(keyManagerFactory.getKeyManagers(), new TrustManager[] { tm }, null);
//sslContext.init(null, new TrustManager[]{tm}, null);
}
@Override
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {
return sslContext.getSocketFactory().createSocket(socket, host, port, autoClose);
}
@Override
public Socket createSocket() throws IOException {
return sslContext.getSocketFactory().createSocket();
}
/**
* Create new HttpClient with CustomSSLSocketFactory.
*/
public static HttpClient getNewHttpClient(Context context, String alias, X509Certificate[] chain, PrivateKey key) {
try {
// This is method from tutorial ----------------------------------------------------
//The root CA Trust Store
rootCAtrustStore = KeyStore.getInstance("BKS");
rootCAtrustStore.load(null);
//InputStream in = context.getResources().openRawResource(com.DII.RSS_Viewer.R.raw.rootca);
//rootCAtrustStore.load(in, "PASSWORD".toCharArray());
//The Keystore with client certificates.
//clientKeyStore = KeyStore.getInstance(KeyStore.getDefaultType());
clientKeyStore = KeyStore.getInstance("pkcs12");
clientKeyStore.load(null);
// client certificate is stored in android's keystore
if((alias != null) && (chain != null))
{
Key pKey = key;
clientKeyStore.setKeyEntry(alias, pKey, "password".toCharArray(), chain);
}
//SSLSocketFactory sf = new CustomSSLSocketFactory(context, clientKeyStore, "password", rootCAtrustStore);
SSLSocketFactory sf = new SSLSocketFactory(clientKeyStore, "password");
sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
HttpParams params = new BasicHttpParams();
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);
SchemeRegistry registry = new SchemeRegistry();
registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
registry.register(new Scheme("https", (SocketFactory) sf, 443));
ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);
return new DefaultHttpClient(ccm, params);
}
catch (Exception e)
{
return new DefaultHttpClient();
}
}
}
Hello,
This is a 2 year old post, but I've just had to work with this subject, and I used Apache HTTP Client new version for Android. I think ti's HttpClient 4.3.5.
public void sendRequestToServer(Context context, HttpUriRequest httpUriRequest,
ResponseExecution responseExecution, boolean clientCertAuthenticated)
{
KeyStore trustStore = clientAuthAuthenticator.initializeTrustStore(context);
SSLContext sslcontext = null;
CloseableHttpClient httpclient = null;
try
{
SSLContextBuilder sslContextBuilder = SSLContexts.custom()
.loadTrustMaterial(trustStore, new TrustSelfSignedStrategy());
if(clientCertAuthenticated)
{
KeyStore keyStore = clientAuthAuthenticator
.initializeKeyStore(context, ClientAuthAuthenticator.CLIENT_KEYSTORE_DATA_FILE);
sslContextBuilder.loadKeyMaterial(keyStore, "password".toCharArray());
}
sslcontext = sslContextBuilder.build();
// Allow TLSv1 protocol only
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
sslcontext, new String[] {"TLSv1"}, null,
SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER
);
httpclient = HttpClients
.custom()
.setHostnameVerifier(
SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER
)
.setSSLSocketFactory(sslsf).build();
CloseableHttpResponse response = httpclient.execute(httpUriRequest);
try
{
responseExecution.execute(context, response);
HttpEntity entity = response.getEntity();
if(entity != null)
{
entity.consumeContent();
}
}
finally
{
response.close();
}
}
catch(IOException e)
{
Log.d(ClientCertWebRequestor.class.getName(), "Error in network communication.", e);
}
catch(NoSuchAlgorithmException e)
{
Log.d(ClientCertWebRequestor.class.getName(), "Error in loading keystore.", e);
}
catch(KeyManagementException e)
{
Log.d(ClientCertWebRequestor.class.getName(), "Error in loading keystore.", e);
}
catch(KeyStoreException e)
{
Log.d(ClientCertWebRequestor.class.getName(), "Error in loading keystore.", e);
}
catch(UnrecoverableKeyException e)
{
Log.d(ClientCertWebRequestor.class.getName(), "Error in loading keystore.", e);
}
finally
{
try
{
if(httpclient != null)
{
httpclient.close();
}
}
catch(IOException e)
{
Log.d(ClientCertWebRequestor.class.getName(), "Error in closing network communication.", e);
}
}
}
public static interface ResponseExecution
{
void execute(Context context, CloseableHttpResponse httpResponse) throws IOException;
}
This might help someone in the future. The keystore has the client certificate, it is a PKCS12 keystore (private key + certificate). The trust store is a BKS which stores the server certificate. I did not use the Keychain API though.
Hi there,
I am writing an app and for one of the features I need the firmware build number.
I know I can get the firmware version(like 4.1.1) with android.os.build but I need the build number of a rom(like "Rom version 1.0") thats stored in build.prop. I know I can parse the whole build.prop file and extract the 1 string of information but is there another way to get is faster and that it doesnt require root to use?
Grtz,
Thirith
Solved it
I solved my own question
Here is how I did it(in case somebody wants to achieve the same thing):
Code:
TextView tv = (TextView)findViewById(R.id.text1);
String input = "getprop |awk -F : '/build.display.id/ { print $2 }'";
execCommandLine(input, tv);
void execCommandLine(String command, TextView tv)
{
Runtime runtime = Runtime.getRuntime();
Process proc = null;
OutputStreamWriter osw = null;
// Running the Script
try
{
proc = runtime.exec("su");
osw = new OutputStreamWriter(proc.getOutputStream());
osw.write(command);
osw.flush();
osw.close();
}
// If return error
catch (IOException ex)
{
// Log error
Log.e("execCommandLine()", "Command resulted in an IO Exception: " + command);
return;
}
// Try to close the process
finally
{
if (osw != null)
{
try
{
osw.close();
}
catch (IOException e){}
}
}
try
{
proc.waitFor();
}
catch (InterruptedException e){}
// Display on screen if error
if (proc.exitValue() != 0)
{
Log.e("execCommandLine()", "Command returned error: " + command + "\n Exit code: " + proc.exitValue());
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setMessage(command + "\nWas not executed sucessfully!");
builder.setNeutralButton("OK", null);
AlertDialog dialog = builder.create();
dialog.setTitle("Script Error");
dialog.show();
}
BufferedReader reader = new BufferedReader(
new InputStreamReader(proc.getInputStream()));
int read;
char[] buffer = new char[4096];
StringBuffer output = new StringBuffer();
try {
while ((read = reader.read(buffer)) > 0) {
output.append(buffer, 0, read);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String exit = output.toString();
if(exit != null && exit.length() == 0) {
exit = "Command executed Successfully but no output was generated";
}
tv.setText(exit);
}
Hi, thanks for making your code public!
Just got an error when trying your code into my app.
Line
Code:
execCommandLine(input, tv);
runs into this error:
Multiple markers at this line
- input cannot be resolved to a type
- Return type for the method is missing
- Syntax error on token ",", delete this
token
Click to expand...
Click to collapse
How do I fix it?
Ok, did a mistake with integrating the code. My whole activity:
Code:
package de.yanniks.cm_updatechecker;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import de.yanniks.cm_updatechecker.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
public class UpdateChecker extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.updatecheck);
TextView tv = (TextView)findViewById(R.id.installedversion);
String input = "getprop |awk -F : '/build.display.id/ { print $2 }'";
execCommandLine(input, tv);}
void execCommandLine(String command, TextView tv)
{
Runtime runtime = Runtime.getRuntime();
Process proc = null;
OutputStreamWriter osw = null;
// Running the Script
try
{
proc = runtime.exec("su");
osw = new OutputStreamWriter(proc.getOutputStream());
osw.write(command);
osw.flush();
osw.close();
}
// If return error
catch (IOException ex)
{
// Log error
Log.e("execCommandLine()", "Command resulted in an IO Exception: " + command);
return;
}
// Try to close the process
finally
{
if (osw != null)
{
try
{
osw.close();
}
catch (IOException e){}
}
}
try
{
proc.waitFor();
}
catch (InterruptedException e){}
// Display on screen if error
if (proc.exitValue() != 0)
{
Log.e("execCommandLine()", "Command returned error: " + command + "\n Exit code: " + proc.exitValue());
AlertDialog.Builder builder = new AlertDialog.Builder(UpdateChecker.this);
builder.setMessage(command + "\nWas not executed sucessfully!");
builder.setNeutralButton("OK", null);
AlertDialog dialog = builder.create();
dialog.setTitle("Script Error");
dialog.show();
}
BufferedReader reader = new BufferedReader(
new InputStreamReader(proc.getInputStream()));
int read;
char[] buffer = new char[4096];
StringBuffer output = new StringBuffer();
try {
while ((read = reader.read(buffer)) > 0) {
output.append(buffer, 0, read);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String exit = output.toString();
if(exit != null && exit.length() == 0) {
exit = "Command executed Successfully but no output was generated";
}
tv.setText(exit);
}
}
A better solution is to use my SystemProperties.get("build.display.id") directly instead of forking a native binary.
Code:
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
import java.lang.reflect.Field;
import java.nio.ByteOrder;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
public class SystemProperties {
public static final int PROP_NAME_MAX= 32; // sic
public static final int PROP_VALUE_MAX= 92; // sic
public static final int PROP_AREA_MAGIC= 0x504f5250; // "PROP"
public static final int PROP_AREA_VERSION= 0x45434f76; // "vOCE" (API level 3..8 at least)
public static final String PROP_SERVICE_NAME= "property_service";
public static final String WORKSPACE= "ANDROID_PROPERTY_WORKSPACE";
// prop_area struct
public static final int PA_COUNT= 0;
public static final int PA_SERIAL= 4;
public static final int PA_MAGIC= 8;
public static final int PA_VERSION= 12;
public static final int PA_RESERVED= 16;
public static final int PA_TOC= 32;
public static final int PA_INFO_NAME= 0;
public static final int PA_INFO_SERIAL= PA_INFO_NAME+PROP_NAME_MAX;
public static final int PA_INFO_VALUE= PA_INFO_SERIAL+4;
private static MappedByteBuffer mMap= null;
private static boolean init() throws IllegalArgumentException,
SecurityException,
NoSuchFieldException,
IllegalAccessException,
IOException {
FileDescriptor fd;
MappedByteBuffer mbb= null;
String workspace= System.getenv(WORKSPACE);
if (workspace == null) {
throw new IllegalArgumentException(WORKSPACE + " not set");
}
String[] wsArray= workspace.split(",");
int osFd= 0;
int len= 0;
try {
osFd= new Integer(wsArray[0]);
} catch (NumberFormatException e) {
throw new IllegalArgumentException(e.getMessage());
}
try {
len= new Integer(wsArray[1]);
} catch (NumberFormatException e) {
throw new IllegalArgumentException(e.getMessage());
}
//Log.i(TAG, "Read fd " + Integer.toString(osFd) + " for " + len + " bytes.");
fd= new FileDescriptor();
Class<?> c= fd.getClass();
Field f= c.getDeclaredField("descriptor");
f.setAccessible(true);
f.setInt(fd, osFd);
FileInputStream in= new FileInputStream(fd);
FileChannel fc= in.getChannel();
mbb= fc.map(FileChannel.MapMode.READ_ONLY, 0, len);
mbb.order(ByteOrder.LITTLE_ENDIAN);
if (mbb.getInt(PA_MAGIC) != PROP_AREA_MAGIC) {
throw new IllegalArgumentException("Wrong kind of magic " + Integer.toString(mbb.getInt(PA_MAGIC), 16));
}
if (mbb.getInt(PA_VERSION) != PROP_AREA_VERSION) {
throw new IllegalArgumentException("Incorrect version " + Integer.toString(mbb.getInt(PA_VERSION), 16));
}
mMap= mbb;
return(true);
}
public static String get(String key) throws IllegalArgumentException,
SecurityException,
NoSuchFieldException,
IllegalAccessException,
IOException {
if (mMap == null) {
if (!init())
return(null);
}
int index= property_find(key);
//Log.i(TAG, "Found entry at " + Integer.toString(index));
if (index < 0)
return(null);
return(getString(index+PA_INFO_VALUE));
}
private static int property_find(String name) {
int count= mMap.getInt(PA_COUNT);
int tok= -1;
//Log.i(TAG, "Key " + name);
next: while(count-- > 0) {
tok++;
int entry= mMap.getInt(PA_TOC + tok*4);
//Log.i(TAG, "Entry " + tok + ": " + Integer.toString(entry, 16));
if ((entry >> 24) != name.length())
continue;
int index= (entry & 0xFFFFFF);
//Log.i(TAG, "Index " + index);
for (int i=0; i<name.length(); i++) {
//Log.i(TAG, "Cmp(" + entry + ":" + index + ":" + i + "): " + (char)(mbb.get(index+i)) + " -- " + name.charAt(i));
if ((char)(mMap.get(index+i)) != name.charAt(i)) {
continue next;
}
}
// found
return(index);
}
return(-1);
}
private static String getString(int index) {
byte b[]= new byte[PROP_VALUE_MAX];
int i= 0;
do {
b[i]= mMap.get(i+index);
} while (b[i++] != 0);
return(new String(b, 0, i-1));
}
}
Sorry 'bout the terrible indentation. Cut'n'paste isn't my code's best friend, obviously.
Hi,
I am developing an android app in which i am using csv file and displaying column contents as listview its displaying as [a,b,c,d] in single row how to display them in individual row in listview.Please any one help me how to achive this.
This is my csv file reading code using hashcode.
Code:
public static Map<String,ArrayList<String>> parseCsv(InputStreamReader reader, String separator, boolean hasHeader) throws IOException {
Map<String,ArrayList<String> > values = new LinkedHashMap<String,ArrayList<String>>();
List<String> columnNames = new LinkedList<String>();
BufferedReader br = null;
br = new BufferedReader(reader);
String line;
int numLines = 0;
while ((line = br.readLine()) != null) {
//if (StringUtils.isNotBlank(line)) {
//if (!line.startsWith("#")) {
String[] tokens = line.split(separator);
if (tokens != null) {
for (int i = 0; i < tokens.length; ++i) {
if (numLines == 0) {
columnNames.add(hasHeader ? tokens[i] : ("row_"+i));
} else {
ArrayList<String> column = values.get(columnNames.get(i));
if (column == null) {
column = new ArrayList<String>();
}
column.add(tokens[i]);
values.put(columnNames.get(i), column);
}
}
}
++numLines;
}
// }//
// }//
return values;
listview code is:
Code:
oslist.add(values);
ListView list = (ListView) findViewById(R.id.studentnames);
String name="name";
// Add it listview
ListAdapter adapter = new SimpleAdapter(this,
oslist, R.layout.student_list, new String[] { name }, new int[] { R.id.name});
list.setAdapter(adapter);
I am implementing a custom camera in android. One of the phones that I am using the default display orientation is landscape mode. The preview of the image looks good when taking the picture. Nonetheless, when the immage is rotated and saved the image becomes distorted.
This is the code I am using to rotate the image:
Code:
Display display = ((WindowManager) MyCamera.this.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int rotation = display.getRotation();
if (rotation == Surface.ROTATION_0) {
rotation = 90;
} else if (rotation == Surface.ROTATION_90) {
rotation = 180;
} else if (rotation == Surface.ROTATION_180) {
rotation = 270;
} else if (rotation == Surface.ROTATION_270) {
rotation = 360;
}
DisplayMetrics metrics = getResources().getDisplayMetrics();
Options options = new BitmapFactory.Options();
options.inDither = false;
options.inScaled = false;
options.inDensity=metrics.densityDpi;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
bm = BitmapFactory.decodeByteArray(imgBytes, 0, imgBytes.length, options);
Matrix m = new Matrix();
m.postRotate(rotation);
Bitmap nbm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), m, true);
file = MyCamera.this.saveBitmap(nbm);
This is the code I'm using to save Bitmap image:
Code:
private File saveBitmap(Bitmap image) {
File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
if (pictureFile == null) {
Log.d(TAG,"Error creating media file, check storage permissions: ");// e.getMessage());
return null;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
image.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.close();
} catch (FileNotFoundException e) {
Log.d(TAG, "File not found: " + e.getMessage());
finish();
} catch (IOException e) {
Log.d(TAG, "Error accessing file: " + e.getMessage());
finish();
}
return pictureFile;
}
Here are some examples on how the image looks in camera preview mode and how it looks after it is saved on the phones external storage.
So i found this perfect code to be able to select zip from sd, but the list looks so basic and I would like to add icons (like one common icon for all dirs), however it seems too hard to do on my own, here is the code:
Code:
private void loadFileList(File path) {
this.currentPath = path;
List<String> r = new ArrayList<String>();
if (path.exists()) {
if (path.getParentFile() != null) r.add(PARENT_DIR);
FilenameFilter filter = new FilenameFilter() {
@SuppressLint("DefaultLocale")
public boolean accept(File dir, String filename) {
File sel = new File(dir, filename);
if (!sel.canRead()) return false;
if (selectDirectoryOption) return sel.isDirectory();
else {
boolean endsWith = fileEndsWith != null ? filename.toLowerCase().endsWith(fileEndsWith) : true;
return endsWith || sel.isDirectory();
}
}
};
String[] fileList1 = path.list(filter);
for (String file : fileList1) {
r.add(file);
}
}
fileList = (String[]) r.toArray(new String[]{});
}