public class ImageCroppMainActivity extends Activity implements OnClickListener{

final int CAMERA_CAPTURE = 1;

//keep track of cropping intent

final int PIC_CROP = 2;

//captured picture uri

private Uri picUri;

final int PICK_IMAGE = 3;   

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_image_cropp_main); 

    //retrieve a reference to the UI button

    Button captureBtn = (Button)findViewById(R.id.capture_btn);

    //handle button clicks

    captureBtn.setOnClickListener(this);

    Button browseBtn = (Button)findViewById(R.id.browse_btn);

    //handle button clicks

    browseBtn.setOnClickListener(this);

}



public void onClick(View v) {

    if (v.getId() == R.id.capture_btn) {   

        try {

            //use standard intent to capture an image

            Intent captureIntent = new 
Intent(MediaStore.ACTION_IMAGE_CAPTURE);

            //we will handle the returned data in onActivityResult

startActivityForResult(captureIntent, CAMERA_CAPTURE);

}

catch(ActivityNotFoundException anfe){

//display an error message

String errorMessage = "Whoops - your device doesn't support capturing images!";

Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);

toast.show();

}  

}

else if(v.getId() == R.id.browse_btn)

{

//use standard intent to capture an image

Intent intent = new Intent(Intent.ACTION_PICK, 

android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

//we will handle the returned data in onActivityResult

startActivityForResult(intent, PICK_IMAGE);

}

}

/**

 * Handle user returning from both capturing and cropping the image

 */

protected void onActivityResult(int requestCode, int resultCode, Intent 

data) {

    if (resultCode == RESULT_OK) {

        //user is returning from capturing an image using the camera

        if(requestCode == CAMERA_CAPTURE){

            //get the Uri for the captured image

            picUri = data.getData();

            //carry out the crop operation

            performCrop();

        }

        //user is returning from cropping the image

        else if(requestCode == PIC_CROP){

            //get the returned data

            Bundle extras = data.getExtras();

            //get the cropped bitmap

            Bitmap thePic = extras.getParcelable("data");

            //retrieve a reference to the ImageView

            ImageView picView = 

 (ImageView)findViewById(R.id.picture);

            //display the returned cropped image
            MediaStore.Images.Media.insertImage(getContentResolver(), thePic, "" , "");

            picView.setImageBitmap(thePic);

        }

        else if(requestCode == PICK_IMAGE)

        {

 picUri = data.getData();

            //carry out the crop operation

            performCrop();

        }}}

   /**

 * Helper method to carry out crop operation

 */

  private void performCrop(){

    //take care of exceptions

    try {

 //call the standard crop action intent (the user device may not support it)

        Intent cropIntent = new 

   Intent("com.android.camera.action.CROP"); 

   //indicate image type and Uri

        cropIntent.setDataAndType(picUri, "image/*");

        //set crop properties

        cropIntent.putExtra("crop", "false");

        //indicate aspect of desired crop

        cropIntent.putExtra("aspectX", 1);

        cropIntent.putExtra("aspectY", 1);

        //indicate output X and Y

        cropIntent.putExtra("outputX", 256);

        cropIntent.putExtra("outputY", 256);

        //retrieve data on return

        cropIntent.putExtra("return-data", true);

        //start the activity - we handle returning in onActivityResult

        startActivityForResult(cropIntent, PIC_CROP);  

     }

    //respond to users whose devices do not support the crop action

    catch(ActivityNotFoundException anfe){

        //display an error message

        String errorMessage = "Whoops - your device doesn't support the

   crop action!";

        Toast toast = Toast.makeText(this, errorMessage, 

   Toast.LENGTH_SHORT);

        toast.show();

    }

   }

  }