Помещение одного изображения под другое

public class GameActivity extends Activity implements View.OnTouchListener {
 
    private ImageView mImageSight;
    private ViewGroup mMoveSight;
    private ImageView mAnimImg;
    private TranslateAnimation transfer;
    private float mX;
    private float mY;
    TextView Textt;
    TextView Texty;
    private float xX;
    private float yY;
    static final int GALLERY_REQUEST = 1;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_game);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        Button button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
                photoPickerIntent.setType("image/*");
                startActivityForResult(photoPickerIntent, GALLERY_REQUEST);
            }
        });
        Display display = getWindowManager().getDefaultDisplay();
        DisplayMetrics metrics = new DisplayMetrics();
        display.getMetrics(metrics);
        Textt = (TextView) findViewById(R.id.textt);
        Texty = (TextView) findViewById(R.id.texty);
        xX = metrics.widthPixels;
        yY = metrics.heightPixels;
        mMoveSight = (ViewGroup) findViewById(R.id.move_sight);
        mImageSight = (ImageView) findViewById(R.id.sight);
        RelativeLayout.LayoutParams lParams = new RelativeLayout.LayoutParams(400, 400);
        mImageSight.setLayoutParams(lParams);
        mImageSight.setOnTouchListener(this);
        mAnimImg = (ImageView) findViewById(R.id.tomato);
        Button animator = (Button) findViewById(R.id.anima);
        animator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d("checkk", "Animation started");
                mAnimImg.startAnimation(transfer);
            }
        });
    }
 
    public boolean onTouch(View view, MotionEvent event) {
 
        final int X = (int) event.getRawX();
        final int Y = (int) event.getRawY();
 
 
        switch (event.getAction() & MotionEvent.ACTION_MASK) {
 
            case MotionEvent.ACTION_DOWN:
                RelativeLayout.LayoutParams lParams = (RelativeLayout.LayoutParams) view.getLayoutParams();
                mX = X - lParams.leftMargin;
                mY = Y - lParams.topMargin;
                break;
 
 
            case MotionEvent.ACTION_MOVE:
                RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) view
                        .getLayoutParams();
                layoutParams.leftMargin = (int) (X - mX);
                layoutParams.topMargin = (int) (Y - mY);
                layoutParams.rightMargin = -250;
                layoutParams.bottomMargin = -250;
                view.setLayoutParams(layoutParams);
                transfer = new TranslateAnimation(0, (X - mX - xX + 285), 0, (Y - mY - yY + 345));
                transfer.setDuration(2000);
                transfer.setFillAfter(true);
                break;
        }
        return true;
    }
 
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
        super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
 
        Bitmap bitmap = null;
        ImageView imageView = (ImageView) findViewById(R.id.imageView);
 
        switch(requestCode) {
            case GALLERY_REQUEST:
                if(resultCode == RESULT_OK){
                    Uri selectedImage = imageReturnedIntent.getData();
                    try {
                        bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), selectedImage);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    imageView.setImageBitmap(bitmap);
                    Log.d("checkk", "Image set");
                }
        }
    }
}