PerseiLayout.java 文件源码

public void createAnimatorToHeadView(final View v, final float angle)
{
    ViewPropertyAnimatorCompat viewPropertyAnimatorCompat = ViewCompat.animate(v);
    viewPropertyAnimatorCompat.setDuration(200);
    viewPropertyAnimatorCompat.setInterpolator(new DecelerateInterpolator());
    viewPropertyAnimatorCompat.rotationX(90);
    viewPropertyAnimatorCompat.start();
    viewPropertyAnimatorCompat.setUpdateListener(new ViewPropertyAnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(View view) {
            float height = ViewCompat.getTranslationY(mChildView);
            mHeadLayout.setPivotX(mHeadLayout.getWidth() / 2);
            mHeadLayout.setPivotY(height);
        }
    });
}