How to pen an image in Android's built-in Gallery app programmatically?

public class BrowsePicture extends Activity {
private static final int SELECT_PICTURE = 1;
private String selectedImagePath;
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ((Button) findViewById(R.id.Button01))
            .setOnClickListener(new OnClickListener() {
                public void onClick(View arg0) {
                    // in onCreate or any event where your want the user to
                    // select a file
                    Intent intent = new Intent();
                    intent.setType("image/*");
                    intent.setAction(Intent.ACTION_GET_CONTENT);
                    startActivityForResult(Intent.createChooser(intent,
                            "Select Picture"), SELECT_PICTURE);
                }
            });
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        if (requestCode == SELECT_PICTURE) {
            Uri selectedImageUri = data.getData();
            selectedImagePath = getPath(selectedImageUri);

        // Convert file path into bitmap image using below line.
 Bitmap yourSelectedImage = BitmapFactory.decodeFile(selectedImagePath);
 Bitmap resizeBitmap = Bitmap.createScaledBitmap(yourSelectedImage, 40, 40, false);
        ByteArrayOutputStream bytes = new ByteArrayOutputStream();

        //For Saving the image you can encode and store it with below line
 resizeBitmap.compress(Bitmap.CompressFormat.JPEG, 80, bytes);
 String encode_string = Base64.encodeBytes(bytes.toByteArray());

    // Display bitmapimage in your imageview
        imageUserPhoto.setImageBitmap(yourSelectedImage);
        }
    }
}
public String getPath(Uri uri) {
    String[] projection = { MediaStore.Images.Media.DATA };
    Cursor cursor = managedQuery(uri, projection, null, null, null);
    int column_index = cursor
            .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    return cursor.getString(column_index);
}

}