AnimationHelper.java 文件源码

private void addTextRotateAnimations(AnimationSet set) {
    RotateAnimation mRotateUpAnim = new RotateAnimation(0.0f, ROTATION_ANGLE, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
    mRotateUpAnim.setDuration(CHARACTER_ANIM_DURATION);
    set.addAnimation(mRotateUpAnim);
    RotateAnimation mRotateDownAnim = new RotateAnimation(ROTATION_ANGLE, 0.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
    mRotateDownAnim.setDuration(CHARACTER_ANIM_DURATION);
    mRotateDownAnim.setStartOffset(CHARACTER_ANIM_DURATION + 20);
    mRotateDownAnim.setFillAfter(true);
    set.addAnimation(mRotateDownAnim);
    set.setInterpolator(interpolator);
}