ScannerOverlayView.java 文件源码

private void initAnimation() {
    paint.setStrokeWidth(getHeight() * 0.01f);
    paint.setAntiAlias(true);
    paint.setDither(true);
    paint.setColor(Color.argb(248, 255, 255, 255));
    paint.setStrokeWidth(20f);
    paint.setStyle(Paint.Style.STROKE);
    paint.setStrokeJoin(Paint.Join.ROUND);
    paint.setStrokeCap(Paint.Cap.ROUND);

    paintGlow.set(paint);
    paintGlow.setColor(Color.argb(235, 74, 138, 255));
    paintGlow.setStrokeWidth(30f);
    paintGlow.setMaskFilter(new BlurMaskFilter(15, BlurMaskFilter.Blur.NORMAL));

    float deltaY = (CameraOverlayView.PADDING * 2) * getHeight();
    Log.i(TAG, String.format("Delta Y : %s", deltaY));

    TranslateAnimation mAnimation = new TranslateAnimation(0f, 0f, 0f, deltaY);
    mAnimation.setDuration(3000);
    mAnimation.setRepeatCount(-1);
    mAnimation.setRepeatMode(Animation.REVERSE);
    mAnimation.setInterpolator(new AccelerateDecelerateInterpolator());
    setAnimation(mAnimation);
}