Photos not saving anywhere?

I am developing an application using custom camera.
Application work fine but when i click capture button image doesnt save anywhere on device(Sony Erricsson Xperia S).
I added the permission to write in menifest also

Take Photo class



import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import android.app.Activity;
import android.content.Context;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.Toast;

public class TakePhoto extends Activity {
private Camera mCamera;
private CameraPreview mPreview;
public static final int MEDIA_TYPE_IMAGE = 1;
private String test="test";

private PictureCallback mPicture = new PictureCallback() {

@Override
public void onPictureTaken(byte[] data, Camera camera) {

File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
if (pictureFile == null) {
Log.d("TakePhoto",
"Error creating media file, check storage permissions: ");
return;
} else {
Log.d("TakePhoto",
"creating media file, check storage permissions: ");
}
try {
//FileOutputStream fos = new FileOutputStream(pictureFile);
FileOutputStream fos = openFileOutput(test, Context.MODE_PRIVATE);
fos.write(data);
fos.close();
Log.d("TakePhoto", "Output Media File "+data);
} catch (FileNotFoundException e) {
Log.d("TakePhoto", "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d("TakePhoto", "Error accessing file: " + e.getMessage());
}

}
};

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.take_photo);

// Create an instance of Camera
mCamera = getCameraInstance();
mCamera.setDisplayOrientation(90);
// Create our Preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(mPreview);

Button captureButton = (Button) findViewById(R.id.bcapture);
captureButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// get an image from the camera
mCamera.takePicture(null, null, mPicture);
Toast.makeText(getBaseContext(), "sup", Toast.LENGTH_SHORT)
.show();
}
});

}

/** A safe way to get an instance of the Camera object. */
public static Camera getCameraInstance() {
Camera c = null;
try {
c = Camera.open(); // attempt to get a Camera instance
} catch (Exception e) {
// Camera is not available (in use or does not exist)
Log.d("TakePhoto", "Camera is not Avialable");
}
return c; // returns null if camera is unavailable
}

/** Create a file Uri for saving an image or video */
private static Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}

/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type) {
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.

File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
"TakePhoto");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.

// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d("TakePhoto", "failed to create directory");
return null;
}
} else {
Log.d("TakePhoto", "Directory exist");

}

// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;

mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");

Log.d("TakePhoto", mediaFile.toString());

return mediaFile;
}
}




Camera Preview class


import java.io.IOException;

import android.content.Context;
import android.hardware.Camera;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

/** A basic Camera preview class */
public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {

private SurfaceHolder mHolder;
private Camera mCamera;

public CameraPreview(Context context, Camera camera) {
super(context);
mCamera = camera;

// Install a SurfaceHolder.Callback so we get notified when the
// underlying surface is created and destroyed.
mHolder = getHolder();
mHolder.addCallback(this);
// deprecated setting, but required on Android versions prior to 3.0
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}

public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, now tell the camera where to draw the preview.
try {
mCamera.setPreviewDisplay(holder);
mCamera.startPreview();
} catch (IOException e) {
Log.d("CameraPreview", "Error setting camera preview: " + e.getMessage());
}
}

public void surfaceDestroyed(SurfaceHolder holder) {
// empty. Take care of releasing the Camera preview in your activity.
}

public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// If your preview can change or rotate, take care of those events here.
// Make sure to stop the preview before resizing or reformatting it.

if (mHolder.getSurface() == null){
// preview surface does not exist
return;
}

// stop preview before making changes
try {
mCamera.stopPreview();
} catch (Exception e){
// ignore: tried to stop a non-existent preview
}

// set preview size and make any resize, rotate or
// reformatting changes here

// start preview with new settings
try {
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();

} catch (Exception e){
Log.d("CameraPreview", "Error starting camera preview: " + e.getMessage());
}
}
}