Develop Reference

Subtitles are not displaying the when seek to backward in videoview

In my Android app videos are played with subtitles using videoview. The problem is when I'm pressing forward or dragging the seekbar subtitles are displaying, but when I'm pressing backward or dragging the seekbar backwards subtitles are not displaying. Below is the full code.
public class MainActivity extends AppCompatActivity implements View.OnTouchListener,MediaPlayer.OnInfoListener,MediaPlayer.OnSeekCompleteListener {
MediaController ctlr;
VideoView videoview;
FrameLayout playercontrolerview;
View view_full_cc;
TextView tv_subtitleText;
private static Handler handler = new Handler();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
videoview = (VideoView) findViewById(R.id.VideoView);
tv_subtitleText=(TextView) findViewById(R.id.tv_subtitleText);
try {
// Start the MediaController
setVideoView();
preparedvideo();
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
}
private void setVideoView() {
ctlr = new MediaController(MainActivity.this) {
#Override
public void show() {
repositionSubtitle(true);
super.show();
}
#Override
public void hide() {
repositionSubtitle(false);
super.hide();
}
};
playercontrolerview = (FrameLayout) ctlr.getParent();
ctlr.setMediaPlayer(videoview);
ctlr.setAnchorView(videoview);
videoview.setMediaController(ctlr);
videoview.requestFocus();
}
private void preparedvideo(){
videoview.setVideoURI(Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.samplevideo));
videoview.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
try {
mp.addTimedTextSource(getSubtitleFile(R.raw.sub1), MediaPlayer.MEDIA_MIMETYPE_TEXT_SUBRIP);
int textTrackIndex = findTrackIndexFor(MediaPlayer.TrackInfo.MEDIA_TRACK_TYPE_TIMEDTEXT, mp.getTrackInfo());
if (textTrackIndex >= 0) {
try {
mp.selectTrack(textTrackIndex);
}catch (Exception e){
e.printStackTrace();
}
} else {
Log.w("subtitles", "Cannot find text track!");
}
mp.setOnTimedTextListener(new MediaPlayer.OnTimedTextListener() {
#Override
public void onTimedText(final MediaPlayer mp, final TimedText text) {
if(text!=null){
handler.post(new Runnable() {
#Override
public void run() {
try {
int seconds = mp.getCurrentPosition() / 1000;
Log.e("Subtitle", "subtitle Info " + text.getText());
tv_subtitleText.setText(text.getText());
}catch (Exception w){
w.printStackTrace();
}
}
});
}else{
Log.e("Subtitle", "subtitle Info null ");
}
}
});
}catch (Exception e){
e.printStackTrace();
}
try {
videoview.start();
}catch (Exception e){
e.printStackTrace();
}
}
});
}
public void repositionSubtitle(boolean isShown) {
FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) tv_subtitleText.getLayoutParams();
if (params != null) {
if (isShown)
params.bottomMargin = 150;
else
params.bottomMargin = 0;
tv_subtitleText.setLayoutParams(params);
}
}
private int findTrackIndexFor(int mediaTrackType, MediaPlayer.TrackInfo[] trackInfo) {
int index = -1;
for (int i = 0; i < trackInfo.length; i++) {
if (trackInfo[i].getTrackType() == mediaTrackType) {
return i;
}
}
return index;
}
private String getSubtitleFile(int resId) {
String fileName = getResources().getResourceEntryName(resId);
File subtitleFile = getFileStreamPath(fileName);
if (subtitleFile.exists()) {
Log.d("subtitle", "Subtitle already exists");
return subtitleFile.getAbsolutePath();
}
Log.d("subtitle", "Subtitle does not exists, copy it from res/raw");
// Copy the file from the res/raw folder to your app folder on the
// device
InputStream inputStream = null;
OutputStream outputStream = null;
try {
inputStream = getResources().openRawResource(resId);
outputStream = new FileOutputStream(subtitleFile, false);
copyFile(inputStream, outputStream);
return subtitleFile.getAbsolutePath();
} catch (Exception e) {
e.printStackTrace();
} finally {
closeStreams(inputStream, outputStream);
}
return "";
}
private void copyFile(InputStream inputStream, OutputStream outputStream)
throws IOException {
final int BUFFER_SIZE = 1024;
byte[] buffer = new byte[BUFFER_SIZE];
int length = -1;
while ((length = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, length);
}
}
// A handy method I use to close all the streams
private void closeStreams(Closeable... closeables) {
if (closeables != null) {
for (Closeable stream : closeables) {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
#Override
public boolean onInfo(MediaPlayer mp, int what, int extra) {
videoview.getCurrentPosition();
// Collection<Caption> subtitles = srt.captions.values();
return false;
}
#Override
public boolean onTouch(View v, MotionEvent event) {
return false;
}
#Override
public void onSeekComplete(MediaPlayer mp) {
}
}

Using Camera API in android to take picture in different focus modes

I need to create an app where when I click a photo it will save 3 jpegs is different focus modes(auto focus, Macro focus and Infinite focus) if possible and save it. I have made a basic camera app whoe code I am posting..Can you guys tell me how to implement this?
public class MainActivity extends Activity implements Constants,SurfaceHolder.Callback,Camera.PreviewCallback,
Camera.AutoFocusCallback, OnTouchListener{
private ViewFlipper myviewflipper;
private float initialXpoint;
private Camera mCamera;
private SurfaceView mPreviewSV;
private SurfaceHolder mSurfaceHolder;
private Button mCapture;
private Button mChange;
private Button mReturn;
private Button mLoad;
private ImageView mImageView;
private int mPicturesCaptured = 0;
boolean isCaptureClicked = false;
boolean encodingCompleted = false;
long startTime;
int currentFile = 0;
int initialPointer = -1;
int secondPointer = -1;
int direction = -1;
CameraSize picSize = BACK_CAM_PREVIEW_SIZE_3 ;
File mFile;
ArrayList<String> imagePath;
ProgressDialog mEncodingProgress;
DisplayTask mTask;
Bitmap mDisplayBitmap;
File path;
File[] files;
#Override
protected 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.activity_main);
mFile = new File(Constants.Cameraeffect);
if (!mFile.exists())
mFile.mkdir();
setupUI();
}
private void setupUI()
{
mPreviewSV = (SurfaceView) findViewById(R.id.sv_cam_preview);
mCapture = (Button) findViewById(R.id.button_capture);
mChange = (Button) findViewById(R.id.toggle);
mReturn = (Button) findViewById(R.id.button_return);
mImageView = (ImageView) findViewById(R.id.display);
mImageView.setOnTouchListener(this);
mLoad = (Button) findViewById(R.id.button_load);
mSurfaceHolder = mPreviewSV.getHolder();
mSurfaceHolder.addCallback(this);
mCapture.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
deleteFiles();
mPicturesCaptured = 0;
isCaptureClicked = true;
startTime=System.currentTimeMillis();
progressUpdate();
}
});
mChange.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
int res = getCurrentCameraId();
switch(res){
case 0:
stopCamera();
startCamera(Constants.FRONT_CAMERA);
break;
case 1:
stopCamera();
startCamera(Constants.BACK_CAMERA);
break;
}
}
});
mLoad.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
imagePath=ListAllFiles();
mImageView.bringToFront();
mImageView.setVisibility(View.VISIBLE);
mImageView.setImageBitmap(decodeFile(imagePath.get(0)));
mTask = new DisplayTask();
mTask.execute("");
}
});
mReturn.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = getIntent();
finish();
startActivity(intent);
}
});
}
private ArrayList<String> ListAllFiles() {
ArrayList<String> tFileList = new ArrayList<String>();
path= new File(Constants.Cameraeffect);
if( path.exists() ) {
files = path.listFiles();
for(int i=0; i<files.length; i++) {
tFileList.add(files[i].toString());
}
}
return tFileList;
}
public void deleteFiles() {
path= new File(Constants.Cameraeffect);
if( path.exists() ) {
files = path.listFiles();
for(int i=0; i<files.length; i++) {
files[i].delete();
}
}
}
#SuppressWarnings("unused")
int getCurrentCameraId() {
int mCameraId = -1;
CameraInfo ci = new CameraInfo();
for (int i = 0 ; i < Camera.getNumberOfCameras(); i++) {
Camera.getCameraInfo(i, ci);
if (ci.facing == CameraInfo.CAMERA_FACING_BACK){
return Constants.BACK_CAMERA;
}
else if (ci.facing == CameraInfo.CAMERA_FACING_FRONT){
return Constants.FRONT_CAMERA;
}
}
return -1;
}
private void progressUpdate()
{
mEncodingProgress = new ProgressDialog(this);
mEncodingProgress.setProgressStyle(ProgressDialog.STYLE_SPINNER);
mEncodingProgress.setMessage("Encoding");
mEncodingProgress.setIndeterminate(false);
mEncodingProgress.show();
new Thread(new Runnable()
{
public void run()
{
while((System.currentTimeMillis()-startTime)<=5000)
{
try
{
Thread.sleep(10);
mEncodingProgress.setProgress(mPicturesCaptured + 1);
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}
}
}).start();
}
#SuppressWarnings("unused")
private void startCamera(int id)
{
try
{
if (mCamera != null)
stopCamera();
mCamera = Camera.open(id);
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(1280,720);
parameters.setFocusMode("infinite");
parameters.setJpegQuality(100);
parameters.setAutoExposureLock(true);
parameters.setAutoWhiteBalanceLock(true);
parameters.setRotation(0);
mCamera.setDisplayOrientation(0);
mCamera.setParameters(parameters);
mCamera.setPreviewCallback(this);
mCamera.setPreviewDisplay(mPreviewSV.getHolder());
mCamera.startPreview();
}
catch (IOException e)
{
stopCamera();
}
}
private void stopCamera()
{
if (mCamera != null)
{
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
mPreviewSV.getHolder().removeCallback(this);
mCamera.release();
mCamera = null;
}
}
#Override
protected void onStart()
{
super.onStart();
}
#Override
protected void onResume()
{
super.onResume();
}
#Override
protected void onPause()
{
stopCamera();
super.onPause();
}
#Override
protected void onDestroy()
{
stopCamera();
super.onDestroy();
}
public void surfaceCreated(SurfaceHolder holder)
{
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height)
{
startCamera(0);
}
public void surfaceDestroyed(SurfaceHolder holder)
{
}
public void onPreviewFrame(byte[] data, Camera camera)
{
if (System.currentTimeMillis()-startTime<=5000)
{
savingJpegToSDCard(data);
}
else
{
if(mEncodingProgress!=null){
mEncodingProgress.dismiss();
mEncodingProgress=null;
encodingCompleted=true;
}
}
if(encodingCompleted){
/*
* Log.i("","sent to JNI");
*/
encodingCompleted=false;
}
}
public void onAutoFocus(boolean arg0, Camera arg1) {
// TODO Auto-generated method stub
}
public boolean onTouch(View arg0, MotionEvent event) {
Log.d("","srikrishna:: ontouch");
switch(event.getAction()){
case(MotionEvent.ACTION_DOWN):
initialPointer=(int) event.getX();
break;
case(MotionEvent.ACTION_MOVE):
secondPointer=(int) event.getX();
break;
case(MotionEvent.ACTION_UP):
initialPointer=(int) event.getX();
}
return true;
}
public Bitmap decodeFile(String fPath)
{
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inJustDecodeBounds = true;
opts.inDither = false;
opts.inPurgeable = true;
opts.inInputShareable = true;
BitmapFactory.decodeFile(fPath, opts);
final int REQUIRED_SIZE = 500;
int scale = 1;
if (opts.outHeight > REQUIRED_SIZE || opts.outWidth > REQUIRED_SIZE)
{
final int heightRatio = Math
.round((float) opts.outHeight / (float) REQUIRED_SIZE);
final int widthRatio = Math
.round((float) opts.outWidth / (float) REQUIRED_SIZE);
scale = heightRatio < widthRatio ? heightRatio : widthRatio;//
}
opts.inJustDecodeBounds = false;
opts.inSampleSize = scale;
Bitmap bm = BitmapFactory.decodeFile(fPath, opts).copy(
Bitmap.Config.RGB_565, false);
return bm;
}
private void savingJpegToSDCard(final byte[] b1)
{
try{
Camera.Parameters parameters = mCamera.getParameters();
Size size = parameters.getPreviewSize();
Log.i("","abh size width and height "+size.width + " "+size.height);
YuvImage image = new YuvImage(b1, parameters.getPreviewFormat(),size.width, size.height, null);
File file = new File(Constants.Cameraeffect + "/File" + mPicturesCaptured + ".jpeg");
FileOutputStream filecon = new FileOutputStream(file);
image.compressToJpeg(new Rect(0, 0, image.getWidth(), image.getHeight()), 90,filecon);
}
catch (FileNotFoundException e) {
e.printStackTrace();
}
mPicturesCaptured++;
}
class DisplayTask extends AsyncTask<String, Bitmap, Void>
{
#Override
protected void onPreExecute()
{
super.onPreExecute();
currentFile = 0;
}
#Override
protected Void doInBackground(String... params)
{
while(true){
Log.i("","abh imagePath.size() "+imagePath.size());
if(secondPointer-initialPointer >50)
{
Log.i("","abh currentFile "+currentFile);
mDisplayBitmap = decodeFile(imagePath.get(currentFile));
publishProgress(mDisplayBitmap);
try
{
Thread.sleep(10);
}
catch (InterruptedException e)
{
e.printStackTrace();
}
if(currentFile<=90)
currentFile++;
initialPointer=secondPointer;
}
}
}
#Override
protected void onPostExecute(Void result)
{
super.onPostExecute(result);
}
#Override
protected void onProgressUpdate(Bitmap... values)
{
super.onProgressUpdate(values);
mImageView.setImageBitmap(values[0]);
}
}
}

In your start camera method set the focus mode to the required one and start the camera. If you want to change it dynamically on click of button then you must call the start camera method with the required attributes. Make sure you are releasing camera[this is very imp] also note that the custom camera implementation in android is very buggy[many of the bugs are stil open just goggle it and see] i suggest you read it carefully and implement it.

Save and retrieve Shape object in android give JAVA.io.NotSerializableExeception

I am using the following code to save and load arraylist of shapes Objects in drawing. but it gives AVA.io.NotSerializableExeception. how to solve this,
public class OffLineCanvas extends SurfaceView implements
SurfaceHolder.Callback {
private boolean canTakeImage;
private OffLineCanvasThread uiThread;
private List<List<MyShape>> dequeUndo;
private List<List<MyShape>> dequeRedo;
private List<MyShape> shapesList;
private CopyOnWriteArrayList<MyShape> objectsToDraw;
private Context context;
private Canvas can;
private Bitmap toDisk = null;
public OffLineCanvas(Context context) {
super(context);
this.context = context;
getHolder().addCallback(this);
objectsToDraw = new CopyOnWriteArrayList<MyShape>();
setZOrderOnTop(false);
dequeUndo = new ArrayList<List<MyShape>>();
dequeRedo = new ArrayList<List<MyShape>>();
shapesList = new ArrayList<MyShape>();
getObject(context);
}
public void AddShapeOffline(MyShape shape, boolean canDraw) {
if (canDraw) {
objectsToDraw.add(shape);
shapesList = Conversion(objectsToDraw);
} else {
shapesList = Conversion(objectsToDraw);
shapesList.add(shape);
}
push(shapesList);
}
private List<MyShape> Conversion(CopyOnWriteArrayList<MyShape> objectsToDraw) {
List<MyShape> tList = new ArrayList<MyShape>();
Iterator<MyShape> iTemp = objectsToDraw.iterator();
while (iTemp.hasNext()) {
MyShape value = iTemp.next();
tList.add(value);
}
return tList;
}
private void push(List<MyShape> msL) {
if (dequeUndo != null)
dequeUndo.add(msL);
}
public void pop() {
if (dequeUndo != null && dequeUndo.size() >= 0) {
if (dequeUndo.size() > 0) {
if (dequeRedo.size() == 0) {
undo(); // undo first view
}
List<MyShape> temp = undo();
objectsToDraw.clear();
if(temp.size() > 0){
for (int i = 0; i < temp.size(); i++) {
objectsToDraw.add(temp.get(i));
}
}
} else {
objectsToDraw.clear();
}
}
}
private List<MyShape> undo() {
List<MyShape> temp = new CopyOnWriteArrayList<MyShape>();
if(dequeUndo.size()>0){
temp = new ArrayList<MyShape>(dequeUndo.get(dequeUndo
.size() - 1));
dequeRedo.add(temp);
dequeUndo.remove(dequeUndo.size() - 1);
}
return temp;
}
public void popR() {
if (dequeRedo != null && dequeRedo.size() > 0) {
if (dequeRedo.size() > 0) {
List<MyShape> temp = new ArrayList<MyShape>(
dequeRedo.get(dequeRedo.size() - 1));
dequeUndo.add(temp);
dequeRedo.remove(dequeRedo.size() - 1);
objectsToDraw.clear();
for (int i = 0; i < temp.size(); i++) {
objectsToDraw.add(temp.get(i));
}
}
}
}
public void SelectShapeOffile(Point point) {
for (int i = 0; i < objectsToDraw.size(); i++) {
if (objectsToDraw.get(i).getBorderRegion().contains((int) point.x, (int) point.y)) {
objectsToDraw.get(i).setSelectd(true);
((Main) context).AddShapeToOnlineCanvas(objectsToDraw.get(i));
objectsToDraw.remove(i);
break;
} else {
((Main) context).NoShapeSelected();
objectsToDraw.get(i).setSelectd(false);
Log.e("asdasdasdasdadasd", "Touch OUT");
}
}
}
#Override
public void onDraw(Canvas canvas) {
if (canvas != null) {
synchronized (getHolder()) {
canvas.drawColor(Color.WHITE);
Iterator<MyShape> drawableObject = objectsToDraw.iterator();
while (drawableObject.hasNext()) {
MyShape value = drawableObject.next();
if (canTakeImage) {
try {
value.draw(can, value.getPaint());
} catch (Exception ex) {
ex.printStackTrace();
}
canvas.setBitmap(toDisk);
} else {
value.draw(canvas, value.getPaint());
}
}
if (canTakeImage) {
try {
saveSignature();
canTakeImage = false;
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
}
}
public Bitmap saveSignature() {
ContextWrapper cw = new ContextWrapper(context);
// path to /data/data/yourapp/app_data/imageDir
File directory = cw.getDir("images", Context.MODE_PRIVATE);
// Create imageDir
File mypath = new File(directory, "profile.png");
try {
toDisk.compress(Bitmap.CompressFormat.PNG, 100,
new FileOutputStream(mypath));
} catch (Exception e) {
e.printStackTrace();
}
return toDisk;
}
public void stopUIThread() {
uiThread.setRunning(false);
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
uiThread = new OffLineCanvasThread(this);
uiThread.setRunning(true);
uiThread.start();
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
uiThread.setRunning(false);
}
public void clearCanvas() {
objectsToDraw.clear();
}
/****************************** save file ******************************/
public void saveCanvas() {
canTakeImage = true;
toDisk = null;
Bitmap.Config conf = Bitmap.Config.ARGB_8888;
toDisk = Bitmap.createBitmap(this.getWidth(), this.getHeight(), conf);
can = new Canvas(toDisk);
can.drawColor(Color.WHITE);
File cacheDir = null;
if (android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED)) {
cacheDir = new File(
android.os.Environment.getExternalStorageDirectory(),
"MyCustomObject");
} else {
cacheDir = context.getCacheDir();
}
if (!cacheDir.exists()) {
cacheDir.mkdirs();
}
boolean result = saveObject(objectsToDraw, context);
if (result)
Toast.makeText(context, "Saved object", Toast.LENGTH_LONG).show();
else
Toast.makeText(context, "Error saving object", Toast.LENGTH_LONG)
.show();
}
public boolean saveObject(CopyOnWriteArrayList<MyShape> obj, Context c) {
final File suspend_f = new File(c.getCacheDir(), "test");
FileOutputStream fos = null;
ObjectOutputStream oos = null;
boolean keep = true;
try {
fos = new FileOutputStream(suspend_f);
oos = new ObjectOutputStream(fos);
oos.writeObject(obj);
} catch (Exception e) {
e.printStackTrace();
keep = false;
} finally {
try {
if (oos != null)
oos.close();
if (fos != null)
fos.close();
if (keep == false)
suspend_f.delete();
} catch (Exception e) {
e.printStackTrace();
}
}
return keep;
}
#SuppressWarnings("unchecked")
public CopyOnWriteArrayList<MyShape> getObject(Context c) {
final File suspend_f = new File(c.getCacheDir(), "test");
CopyOnWriteArrayList<MyShape> simpleClass = null;
FileInputStream fis = null;
ObjectInputStream is = null;
try {
fis = new FileInputStream(suspend_f);
is = new ObjectInputStream(fis);
objectsToDraw = (CopyOnWriteArrayList<MyShape>) is.readObject();
} catch (Exception e) {
#SuppressWarnings("unused")
String val = e.getMessage();
} finally {
try {
if (fis != null)
fis.close();
if (is != null)
is.close();
} catch (Exception e) {
}
}
return simpleClass;
}
}
Regards

It means either your MyShape class, or some of its field doesn't implement Serializable (which is required to be implemented, though it contains no method (it's a marker interface)).

I have 2 activities. I need to play one background music to all the activities.I want play and stop song from main activity

This is my main activity which is actually a tab activity. I am choosing list of song and i am trying to play radio in activity given below.
public class MainActivity extends TabActivity {
String[] actions = new String[] { "Tune-Up", "About Us", "Like-Us",
"Other", "Exit" };
Spinner country_list;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
TabHost tabHost = getTabHost();
TabSpec allcallspec = tabHost.newTabSpec("listner");
allcallspec.setIndicator("listener");
Intent allIntent = new Intent(this, Tab_Listner.class);
allcallspec.setContent(allIntent);
// Tab for recived call
TabSpec recivespec = tabHost.newTabSpec("Like");
// setting Title and Icon for the Tab
recivespec.setIndicator("Like");
Intent reciveIntent = new Intent(MainActivity.this, Tab_Like.class);
recivespec.setContent(reciveIntent);
TabSpec recivespec1 = tabHost.newTabSpec("Categery");
// setting Title and Icon for the Tab
recivespec1.setIndicator("CateGories");
Intent reciveIntent1 = new Intent(MainActivity.this,
Category_name.class);
recivespec1.setContent(reciveIntent1);
tabHost.addTab(recivespec);
tabHost.addTab(allcallspec); // Adding photos tab
// Adding songs tab
tabHost.addTab(recivespec1); // Adding songs tab
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// MenuItem mainMenuSpinner = menu.findItem( R.id.menu_main_spinner);
// setupMainMenuSpinner( mainMenuSpinner );
int currentapiVersion = android.os.Build.VERSION.SDK_INT;
Log.i("Device Versoin is", "" + currentapiVersion);
if (currentapiVersion >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
ActionBar actionBar = getActionBar();
getMenuInflater().inflate(R.menu.mainactivity, menu);
Log.i("Android Version is", "Belove Froyo Action Bar Not Displayed");
MenuItem statusSpinner = menu.findItem(R.id.menu_status_spinner);
setupStatusSpinner(statusSpinner);
}
return super.onCreateOptionsMenu(menu);
}
private void setupStatusSpinner(MenuItem item) {
View view = item.getActionView();
if (view instanceof Spinner) {
Spinner spinner = (Spinner) view;
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
getBaseContext(),
android.R.layout.simple_spinner_dropdown_item, actions);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
switch (arg2) {
case 1:
Log.i("About US", "Go");
startActivity(new Intent(MainActivity.this,
About_Us.class));
break;
case 2:
String url = "https://www.facebook.com/musicbreeds";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
break;
case 3:
Log.i("Other", "Go");
startActivity(new Intent(MainActivity.this, Other.class));
break;
case 4:
Log.i("Exit", "unSuccess");
System.out.print("not.......................");
System.exit(0);
}
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
TextView tv_radio_name = (TextView) findViewById(R.id.tv_play_radio_name);
tv_radio_name.setText(Tab_Listner.name);
}
}
Play_Radio activity, In this activity i play and pause songs. i want to have play/pause button at bottom in my MainActivity to stop and play current song.
public class Play_Radio extends Activity {
private ImageView playButton;
private TextView textStreamed, tv_radio_name, tv_radio_cat;
private boolean isPlaying;
private static StreamingMediaPlayer audioStreamer;
private AudioManager audioManager = null;
ImageView iv_like;
Dialog rankDialog;
RatingBar ratingBar, pre_rating;
float cus_rating;
AdView adView;
Dialog dialog;
public static String name, rating, like, radio_url, id, listner, image;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
setContentView(R.layout.play_radio);
if (audioStreamer != null) {
try {
Log.i("Already ply", "Succss");
audioStreamer.stop();
} catch (Exception e) {
}
} else {
Log.i("First time", "Play");
}
initControls();
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
Log.i("On Pause is call", "Succcess");
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
int currentapiVersion = android.os.Build.VERSION.SDK_INT;
Log.i("Device Versoin is", "" + currentapiVersion);
if (currentapiVersion >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
ActionBar actionBar = getActionBar();
actionBar.setHomeButtonEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(true);
getMenuInflater().inflate(R.menu.main, menu);
Log.i("Android Device above", "Home Enbled");
}
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case android.R.id.home:
onBackPressed();
return true;
case R.id.home:
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
Log.i("Home", "Press");
return true;
}
return super.onOptionsItemSelected(item);
}
private void initControls() {
iv_like = (ImageView) findViewById(R.id.iv_activity_like);
iv_like.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Vibrator v1 = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
v1.vibrate(40);
Toast.makeText(getApplicationContext(),
"Thanks For like Our Station", Toast.LENGTH_LONG)
.show();
}
});
audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
textStreamed = (TextView) findViewById(R.id.text_kb_streamed);
playButton = (ImageView) findViewById(R.id.imageView1);
playButton.setEnabled(false);
playButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Log.i("Click sadg ", "success");
Vibrator v1 = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
v1.vibrate(40);
if (audioStreamer.getMediaPlayer().isPlaying()) {
Log.i("play ", "success");
audioStreamer.getMediaPlayer().pause();
playButton.setImageResource(R.drawable.play_radio_play);
} else {
Log.i("pause", "success");
audioStreamer.getMediaPlayer().start();
audioStreamer.startPlayProgressUpdater();
playButton.setImageResource(R.drawable.play_radio_pause);
}
isPlaying = !isPlaying;
}
});
// rating radio sation
ImageView rankBtn = (ImageView) findViewById(R.id.iv_activity_rating);
rankBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
rankDialog = new Dialog(Play_Radio.this,
R.style.FullHeightDialog);
rankDialog.setContentView(R.layout.rating_bar);
rankDialog.setCancelable(true);
ratingBar = (RatingBar) rankDialog
.findViewById(R.id.dialog_ratingbar);
float userRankValue = 0;
// ratingBar.setRating(userRankValue);
ratingBar
.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
#Override
public void onRatingChanged(RatingBar ratingBar,
float rating, boolean fromUser) {
// TODO Auto-generated method stub
cus_rating = rating;
}
});
Button updateButton = (Button) rankDialog
.findViewById(R.id.rank_dialog_button);
updateButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(Play_Radio.this,
"Thanks For Rating Our Stations",
Toast.LENGTH_LONG).show();
rankDialog.dismiss();
}
});
// now that the dialog is set up, it's time to show it
rankDialog.show();
}
});
String urlstring2 = Tab_Listner.radio_url;
Toast.makeText(Play_Radio.this, "Please Wait...", Toast.LENGTH_LONG)
.show();
startStreamingAudio(urlstring2);
tv_radio_cat = (TextView) findViewById(R.id.tv_play_radio_cat);
tv_radio_name = (TextView) findViewById(R.id.tv_play_radio_name);
tv_radio_name.setText(Tab_Listner.name);
pre_rating = (RatingBar) findViewById(R.id.ratingBar1);
pre_rating.setRating(Float.parseFloat(Tab_Listner.rating));
}
private void startStreamingAudio(String urlstring) {
try {
dialog = new Dialog(Play_Radio.this,
android.R.style.Theme_Translucent_NoTitleBar);
dialog.setContentView(R.layout.progress_layout);
dialog.setTitle("loading...");
dialog.show();
ProgressBar progressBar = (ProgressBar) findViewById(R.id.progress_bar);
if (audioStreamer != null) {
audioStreamer.interrupt();
}
audioStreamer = new StreamingMediaPlayer(this, textStreamed,
playButton, progressBar, dialog);
audioStreamer.startStreaming(urlstring, 5208, 216);
} catch (Exception e) {
Log.e(getClass().getName(), "Error starting to stream audio.", e);
}
}
public void onItemSelected(AdapterView parent, View v, int position, long id) {
mSwitcher.setImageResource(mImageIds[position]);
}
public void onNothingSelected(AdapterView parent) {
}
public View makeView() {
ImageView i = new ImageView(this);
i.setBackgroundColor(0xFF000000);
i.setScaleType(ImageView.ScaleType.FIT_CENTER);
i.setLayoutParams(new ImageSwitcher.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
return i;
}
private ImageSwitcher mSwitcher;
public class ImageAdapter extends BaseAdapter {
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView i = new ImageView(mContext);
i.setImageResource(mThumbIds[position]);
i.setAdjustViewBounds(true);
i.setLayoutParams(new Gallery.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
i.setBackgroundResource(R.drawable.picture_frame);
return i;
}
private Context mContext;
}
private Integer[] mThumbIds = { R.drawable.calculator, R.drawable.calendar,
R.drawable.camera };
private Integer[] mImageIds = { R.drawable.calculator, R.drawable.calendar,
R.drawable.camera };
}
i have already add play/pause button in playradio activity and its work but i want to play pause button on mainactivity for start and stop play song which are already play run in to radio activity
public class StreamingMediaPlayer {
private static final int INTIAL_KB_BUFFER = 96 * 10 / 8;// assume
// 96kbps*10secs/8bits
// per byte
private TextView textStreamed;
private ImageView playButton;
private Dialog dialog;
private ProgressBar progressBar;
// Track for display by progressBar
private long mediaLengthInKb, mediaLengthInSeconds;
private int totalKbRead = 0;
// Create Handler to call View updates on the main UI thread.
private final Handler handler = new Handler();
private MediaPlayer mediaPlayer;
private File downloadingMediaFile;
private boolean isInterrupted;
private Context context;
private int counter = 0;
public StreamingMediaPlayer(Context context, TextView textStreamed,
ImageView playButton, ProgressBar progressBar, Dialog dialog) {
this.context = context;
this.textStreamed = textStreamed;
this.playButton = playButton;
this.progressBar = progressBar;
this.dialog = dialog;
}
public void startStreaming(final String mediaUrl, long mediaLengthInKb,
long mediaLengthInSeconds) throws IOException {
this.mediaLengthInKb = mediaLengthInKb;
this.mediaLengthInSeconds = mediaLengthInSeconds;
Runnable r = new Runnable() {
public void run() {
// Dialog dialog=null;
try {
downloadAudioIncrement(mediaUrl);
} catch (IOException e) {
Log.e(getClass().getName(),
"Unable to initialize the MediaPlayer for fileUrl="
+ mediaUrl, e);
return;
}
}
};
new Thread(r).start();
}
public void downloadAudioIncrement(String mediaUrl) throws IOException {
URLConnection cn = new URL(mediaUrl).openConnection();
cn.connect();
InputStream stream = cn.getInputStream();
if (stream == null) {
Log.e(getClass().getName(),
"Unable to create InputStream for mediaUrl:" + mediaUrl);
}
downloadingMediaFile = new File(context.getCacheDir(),
"downloadingMedia.dat");
if (downloadingMediaFile.exists()) {
downloadingMediaFile.delete();
}
FileOutputStream out = new FileOutputStream(downloadingMediaFile);
byte buf[] = new byte[16384];
int totalBytesRead = 0, incrementalBytesRead = 0;
do {
int numread = stream.read(buf);
if (numread <= 0)
break;
out.write(buf, 0, numread);
totalBytesRead += numread;
incrementalBytesRead += numread;
totalKbRead = totalBytesRead / 1000;
testMediaBuffer();
fireDataLoadUpdate();
} while (validateNotInterrupted());
stream.close();
if (validateNotInterrupted()) {
fireDataFullyLoaded();
}
}
private boolean validateNotInterrupted() {
if (isInterrupted) {
if (mediaPlayer != null) {
mediaPlayer.pause();
// mediaPlayer.release();
}
return false;
} else {
return true;
}
}
private void testMediaBuffer() {
Runnable updater = new Runnable() {
public void run() {
if (mediaPlayer == null) {
// Only create the MediaPlayer once we have the minimum
// buffered data
if (totalKbRead >= INTIAL_KB_BUFFER) {
try {
startMediaPlayer();
} catch (Exception e) {
Log.e(getClass().getName(),
"Error copying buffered conent.", e);
}
}
} else if (mediaPlayer.getDuration()
- mediaPlayer.getCurrentPosition() <= 1000) {
transferBufferToMediaPlayer();
}
}
};
handler.post(updater);
}
private void startMediaPlayer() {
try {
File bufferedFile = new File(context.getCacheDir(), "playingMedia"
+ (counter++) + ".dat");
moveFile(downloadingMediaFile, bufferedFile);
Log.e(getClass().getName(),
"Buffered File path: " + bufferedFile.getAbsolutePath());
Log.e(getClass().getName(),
"Buffered File length: " + bufferedFile.length() + "");
mediaPlayer = createMediaPlayer(bufferedFile);
// We have pre-loaded enough content and started the MediaPlayer so
// update the buttons & progress meters.
mediaPlayer.start();
startPlayProgressUpdater();
playButton.setEnabled(true);
} catch (IOException e) {
Log.e(getClass().getName(), "Error initializing the MediaPlayer.",
e);
return;
}
}
private MediaPlayer createMediaPlayer(File mediaFile) throws IOException {
MediaPlayer mPlayer = new MediaPlayer();
mPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
public boolean onError(MediaPlayer mp, int what, int extra) {
Log.e(getClass().getName(), "Error in MediaPlayer: (" + what
+ ") with extra (" + extra + ")");
return false;
}
});
FileInputStream fis = new FileInputStream(mediaFile);
mPlayer.setDataSource(fis.getFD());
mPlayer.prepare();
return mPlayer;
}
private void transferBufferToMediaPlayer() {
try {
// First determine if we need to restart the player after
// transferring data...e.g. perhaps the user pressed pause
boolean wasPlaying = mediaPlayer.isPlaying();
int curPosition = mediaPlayer.getCurrentPosition();
// Copy the currently downloaded content to a new buffered File.
// Store the old File for deleting later.
File oldBufferedFile = new File(context.getCacheDir(),
"playingMedia" + counter + ".dat");
File bufferedFile = new File(context.getCacheDir(), "playingMedia"
+ (counter++) + ".dat");
// This may be the last buffered File so ask that it be delete on
// exit. If it's already deleted, then this won't mean anything. If
// you want to
// keep and track fully downloaded files for later use, write
// caching code and please send me a copy.
bufferedFile.deleteOnExit();
moveFile(downloadingMediaFile, bufferedFile);
mediaPlayer.pause();
mediaPlayer = createMediaPlayer(bufferedFile);
mediaPlayer.seekTo(curPosition);
boolean atEndOfFile = mediaPlayer.getDuration()
- mediaPlayer.getCurrentPosition() <= 1000;
if (wasPlaying || atEndOfFile) {
mediaPlayer.start();
}
oldBufferedFile.delete();
} catch (Exception e) {
Log.e(getClass().getName(),
"Error updating to newly loaded content.", e);
}
}
private void fireDataLoadUpdate() {
Runnable updater = new Runnable() {
public void run() {
textStreamed.setText((totalKbRead + "Kb"));
float loadProgress = ((float) totalKbRead / (float) mediaLengthInKb);
progressBar.setSecondaryProgress((int) (loadProgress * 100));
if (dialog != null)
dialog.dismiss();
}
};
handler.post(updater);
}
private void fireDataFullyLoaded() {
Runnable updater = new Runnable() {
public void run() {
transferBufferToMediaPlayer();
// Delete the downloaded File as it's now been transferred to
// the currently playing buffer file.
downloadingMediaFile.delete();
textStreamed
.setText(("Audio full loaded: " + totalKbRead + " Kb read"));
}
};
handler.post(updater);
}
public MediaPlayer getMediaPlayer() {
return mediaPlayer;
}
public void startPlayProgressUpdater() {
float progress = (((float) mediaPlayer.getCurrentPosition() / 1000) / mediaLengthInSeconds);
progressBar.setProgress((int) (progress * 100));
if (dialog != null)
dialog.dismiss();
if (mediaPlayer.isPlaying()) {
Runnable notification = new Runnable() {
public void run() {
startPlayProgressUpdater();
}
};
handler.postDelayed(notification, 1000);
}
}
public void interrupt() {
playButton.setEnabled(false);
isInterrupted = true;
validateNotInterrupted();
}
public void moveFile(File oldLocation, File newLocation) throws IOException {
if (oldLocation.exists()) {
BufferedInputStream reader = new BufferedInputStream(
new FileInputStream(oldLocation));
BufferedOutputStream writer = new BufferedOutputStream(
new FileOutputStream(newLocation, false));
try {
// byte[] buff = new byte[8192];
/* changing the size of the buffer */
byte[] buff = new byte[16384];
int numChars;
while ((numChars = reader.read(buff, 0, buff.length)) != -1) {
writer.write(buff, 0, numChars);
}
} catch (IOException ex) {
throw new IOException("IOException when transferring "
+ oldLocation.getPath() + " to "
+ newLocation.getPath());
} finally {
try {
if (reader != null) {
writer.close();
reader.close();
}
} catch (IOException ex) {
Log.e(getClass().getName(),
"Error closing files when transferring "
+ oldLocation.getPath() + " to "
+ newLocation.getPath());
}
}
} else {
throw new IOException(
"Old location does not exist when transferring "
+ oldLocation.getPath() + " to "
+ newLocation.getPath());
}
}
public void change_volume(float vol) {
Log.i("Media Player volume change", "Success" + vol);
mediaPlayer.setVolume(vol, vol);
}
public void stop() {
// TODO Auto-generated method stub
mediaPlayer.stop();
}
public void stoppreviousPlayer() {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
// mediaPlayer.release();
}
}
}

you need a Service which is independent to the activity to play the song
public class SongService extends Service {
MediaPlayer mm;
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
mm = MediaPlayer.create(this, R.raw.mainmenu2);
mm.setLooping(true);
}
#Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
mm.stop();
}
#Override
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
super.onStart(intent, startId);
mm.start();
}
}
then add this whenever you want to play the song in the service.
startService(new Intent(this, SongService.class));
and to finish it add this:
stopService(new Intent(MainMenu.this,SongService.class));
So when you press the button start the service, and whenever you press the stop button stop it. this is how you can play songs through activities.

First you have to create a raw folder in res folder and paste the song you want to play there.
MainActivity,java======
protected void onCreate(){
MediaPlayer backgroundSong;
backgroundSong = MediaPlayer.create(MainActivity.this, R.raw.your_song_name);
backgroundSong.start();}
#Override
protected void stopSong() {
// TODO Auto-generated method stub
backgroundSong.release();
}
OtherActivity.java
protected void onPause(){
MainActivity ma = new MainActivity();
ma.stopSong();
}

Android Save Multiple Images to SDcard

I'm new to Android and Java. I have been working on my task i.e, Image Downloader. Where I have to download images with progress bar and display them in grid View. I have created two classes 1. URLImageAdapter 2. CacheActivity. Everything works fine but now I want to save those images to sd card. I have been looking on what methods and changes should be made? Any help? Thank You. I have added permission in Android Manifest File.
public class URLImageAdapter extends BaseAdapter {
private class Image {
String url;
Bitmap thumb;
}
private Image[] images;
private Context myContext;
public LoadThumbsTask thumbnailGen;
private Object previousList;
public URLImageAdapter(Context c) {
myContext = c;
thumbnailGen = new LoadThumbsTask();
if (previousList != null) {
images = (Image[]) previousList;
thumbnailGen.execute(images);
return;
}
images = new Image[imageURLs.length];
for (int i = 0, j = imageURLs.length; i < j; i++) {
images[i] = new Image();
images[i].url = imageURLs[i];
}
thumbnailGen.execute(images);
}
public int getCount() {
return images.length;
}
public Object getItem(int position) {
return images[position].url;
}
public long getItemId(int position) {
return position;
}
public Object getData() {
if (thumbnailGen != null
&& thumbnailGen.getStatus() != AsyncTask.Status.FINISHED) {
thumbnailGen.cancel(true);
}
return images;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imgView;
Image cached = images[position];
if (convertView == null) {
imgView = new ImageView(myContext);
imgView.setLayoutParams(new GridView.LayoutParams(100, 100));
} else {
imgView = (ImageView) convertView;
}
if (cached.thumb == null) {
imgView.setImageResource(R.drawable.ic_action_search);
imgView.setScaleType(ScaleType.CENTER);
} else {
imgView.setScaleType(ScaleType.FIT_CENTER);
imgView.setImageBitmap(cached.thumb);
}
return imgView;
}
private void cacheUpdated() {
this.notifyDataSetChanged();
}
private Bitmap loadThumb(String url) {
Bitmap thumb = null;
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inSampleSize = 4;
try {
URL u = new URL(url);
URLConnection c = u.openConnection();
c.connect();
BufferedInputStream stream = new BufferedInputStream(
c.getInputStream());
thumb = BitmapFactory.decodeStream(stream, null, opts);
stream.close();
} catch (MalformedURLException e) {
Log.e("ERROR", "malformed url: " + url);
} catch (IOException e) {
Log.e("ERROR", "An error has occurred downloading the image: "
+ url);
}
return thumb;
}
private class LoadThumbsTask extends AsyncTask<Image, Void, Void> {
/*private ProgressDialog dialog;
#Override
protected void onPreExecute() {
this.dialog = ProgressDialog.show(myContext, "Please wait",
"Downloading.....", true);
}
#Override
protected void onPostExecute(Void unused) {
//Intent for next activity
this.dialog.dismiss();
}*/
#Override
protected Void doInBackground(Image... cache) {
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inSampleSize = 4;
for (Image i : cache) {
if (isCancelled())
return null;
if (i.thumb != null)
continue;
SystemClock.sleep(500);
i.thumb = loadThumb(i.url);
publishProgress();
}
return null;
}
#Override
protected void onProgressUpdate(Void... param) {
cacheUpdated();
}
}
private String[] imageURLs = {
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_2851.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_2944.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_2989.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3005.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3012.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3034.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3047.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3092.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3110.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3113.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3128.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3160.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3226.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3228.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3251.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3268.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3275.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3346.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3365.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3374.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3385.jpg",
"http://cdn.cs76.net/2011/spring/lectures/6/imgs/img_3392.jpg", };
}
CacheActivity
public class CacheActivity extends Activity {
Button btnStartProgress;
ProgressDialog progressBar;
private int progressBarStatus = 0;
private Handler progressBarHandler = new Handler();
private GridView gridview;
private long fileSize = 0;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cache);
gridview = (GridView) findViewById(R.id.grid_view);
addListenerOnButton();
}
public void addListenerOnButton() {
btnStartProgress = (Button) findViewById(R.id.btnStartProgress);
btnStartProgress.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
progressBar = new ProgressDialog(v.getContext());
progressBar.setCancelable(true);
progressBar.setMessage("File downloading ...");
progressBar.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressBar.setProgress(0);
progressBar.setMax(100);
progressBar.show();
progressBarStatus = 0;
fileSize = 0;
new Thread(new Runnable() {
public void run() {
while (progressBarStatus < 100) {
progressBarStatus = doInBackground();
try {
Thread.sleep(7500);
} catch (InterruptedException e) {
e.printStackTrace();
}
progressBarHandler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressBarStatus);
}
});
}
if (progressBarStatus >= 100) {
try {
Thread.sleep(450);
} catch (InterruptedException e) {
e.printStackTrace();
}
progressBar.dismiss();
}
}
}).start();
try {
gridview.setAdapter(new URLImageAdapter(CacheActivity.this));
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public int doInBackground() {
while (fileSize <= 1000000) {
fileSize++;
if (fileSize == 100000) {
return 10;
} else if (fileSize == 200000) {
return 20;
} else if (fileSize == 300000) {
return 30;
}else if (fileSize == 400000) {
return 40;
}else if (fileSize == 500000) {
return 50;
}else if (fileSize == 600000) {
return 60;
}else if (fileSize == 700000) {
return 70;
}else if (fileSize == 800000) {
return 80;
}else if (fileSize == 900000) {
return 90;
}
}
return 100;
}
}

call this below methode in getView() under
imgView.setScaleType(ScaleType.FIT_CENTER);
imgView.setImageBitmap(cached.thumb);
saveDataInSdCard(cached.thumb,position);
private void saveDataInSdCard(Bitmap bt,int i) {
OutputStream fOut = null;
Uri outputFileUri;
try {
File root = new File(Environment.getExternalStorageDirectory()
+ File.separator + "urFlodername" + File.separator);
root.mkdirs();
sdImageMainDirectory = new File(root,i+"myPicName.jpg");
outputFileUri = Uri.fromFile(sdImageMainDirectory);
fOut = new FileOutputStream(sdImageMainDirectory);
} catch (Exception e) {
}
Bitmap bm =bt;
try {
bm.compress(Bitmap.CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();
} catch (Exception e) {
}
}
add permission
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Basically you have your downloaded image loaded into a Bitmap. So most of your work is complete. Next you need to do is
OutputStream fout = null;
File file = new File(name);
try {
fout = new FileOutputStream(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
thumb.compress(Bitmap.CompressFormat.JPEG, 100, fout);
try {
fout.flush();
} catch (IOException e) {
e.printStackTrace();
} finally {
fout.close();
}

http://negativeprobability.blogspot.in/2011/08/lazy-loading-of-images-in-listview.html
imagecursor = managedQuery(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, img, null,null, MediaStore.Images.Thumbnails.IMAGE_ID + "");
The above link will help you in making some better changes in your code. A common scenario is adding images to a Listview. For example, if you´re making a cocktail recipe app, you´d want a picture next to the cocktail name. Sometimes the images should be retrieved from the internet and then be displayed. Unfortunately, this is difficult to do right. If you´ve tried it, you´ve probably noticed performance hits, or some strange glitches. In this tutorial, I´ll show you how to download images and display them. We´ll also discuss some pitfalls, like recycling and concurrency.