AnimationHelper.java 文件源码

private void addLoopScaleAnimations(long duration, AnimationSet set) {
    ScaleAnimation mScaleAnim = new ScaleAnimation(1, SCALE_AMOUNT, 1f, SCALE_AMOUNT, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
    mScaleAnim.setDuration(duration);
    set.addAnimation(mScaleAnim);
    ScaleAnimation mScaleDownAnim = new ScaleAnimation(SCALE_AMOUNT, 1, SCALE_AMOUNT, 1, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
    mScaleDownAnim.setDuration(duration);
    mScaleDownAnim.setStartOffset(duration + 50);
    set.addAnimation(mScaleDownAnim);
    set.setInterpolator(interpolator);
}