seekbar 拖动改变图片透明度

seekbar 拖动改变图片透明度，到达最大值时，执行旋转动画。

  mSeekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

                float pro = (float) (progress / 360.0);
                mImageview.setAlpha(pro);
                if (progress == 360) {

                    Animator rotationYAnimator = ObjectAnimator.ofFloat(mImageview, "rotationY", 0, 360);
                    rotationYAnimator.setDuration(3333);
                    rotationYAnimator.start();
                }

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {


            }
        });

最终效果