如何在android中增加手指触摸动作的进度条？

我已经实现了一个在触摸屏上显示背面图像的代码。当触摸手指移动时，后图像视图显示区域和前图像视图将不可见。我只想在手上做按摩我的代码在这里谁能建议我怎么做

public class StartActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(new TouchView(this));

}

class TouchView extends View {
    Bitmap bgr;
    Bitmap overlayDefault;
    Bitmap overlay;
    Paint pTouch;
    int X = -100;
    int Y = -100;
    Canvas c2;

    public TouchView(Context context) {
        super(context);

        bgr = BitmapFactory.decodeResource(getResources(), R.drawable.bgr);
        overlayDefault = BitmapFactory.decodeResource(getResources(),
                R.drawable.over);
        overlay = BitmapFactory.decodeResource(getResources(),
                R.drawable.over).copy(Config.ARGB_8888, true);
        c2 = new Canvas(overlay);

        pTouch = new Paint(Paint.ANTI_ALIAS_FLAG);
        pTouch.setXfermode(new PorterDuffXfermode(Mode.SRC_OUT));
        pTouch.setColor(Color.TRANSPARENT);
        pTouch.setMaskFilter(new BlurMaskFilter(15, Blur.NORMAL));

    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {

        switch (ev.getAction()) {

        case MotionEvent.ACTION_DOWN: {

            X = (int) ev.getX();
            Y = (int) ev.getY();
            invalidate();

            break;
        }

        case MotionEvent.ACTION_MOVE: {

            X = (int) ev.getX();
            Y = (int) ev.getY();
            invalidate();
            break;

        }

        case MotionEvent.ACTION_UP:

            break;

        }
        return true;
    }

    @Override
    public void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        // draw background
        canvas.drawBitmap(bgr, 0, 0, null);
        // copy the default overlay into temporary overlay and punch a hole
        // in it
        c2.drawBitmap(overlayDefault, 0, 0, null); // exclude this line to
                                                    // show all as you draw
        c2.drawCircle(X, Y, 80, pTouch);
        // draw the overlay over the background
        canvas.drawBitmap(overlay, 0, 0, null);

    }

}}

---

请帮忙……

你想要什么？你能给我的图像显示一些快照吗？它不清楚吗？我想要在我的图像上绘制效果，比如触摸时的奶油色，我的手指在图像上移动该颜色显示。并增加手指运动的进度条状态。你知道我是怎么做的吗？怎么做？任何人都可以提出建议？