WelcomeActivity.java 文件源码

private AnimationSet startShowContinueIconAnimations() {
    Animation mScaleAnimation = new ScaleAnimation(0, 1, 0, 1, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
    Animation mRotateAnimation = new RotateAnimation(
                0, 360,
                Animation.RELATIVE_TO_SELF, 0.5f,
                Animation.RELATIVE_TO_SELF, 0.5f
    );
    mRotateAnimation.setRepeatCount(0);

    AnimationSet mAnimations = new AnimationSet(true);
    mAnimations.setDuration(REVEAL_ANIMATION_DURATION);
    mAnimations.setFillAfter(true);
    mAnimations.setInterpolator(new OvershootInterpolator(1.5f));
    mAnimations.addAnimation(mScaleAnimation);
    mAnimations.addAnimation(mRotateAnimation);

    mContinueIcon.startAnimation(mAnimations);
    return mAnimations;
}