parent.java 文件源码

@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void rotationExpandIcon(float from, float to) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        ValueAnimator valueAnimator = ValueAnimator.ofFloat(from, to);
        valueAnimator.setDuration(150);
        valueAnimator.setInterpolator(new LinearOutSlowInInterpolator());
        valueAnimator.addUpdateListener(this);
        valueAnimator.start();
    }
}