AnimationController.java 文件源码

private void startAnimationCollapse(int position, float startZ, float startY,
                                    float firstScaleX, float firstScaleY,
                                    float scaleX, float scaleY) {
    transitionAnimHiddenView = new TransitionAnimation(hiddenViews.get(position));
    transitionAnimHiddenView.setInterpolator(new LinearOutSlowInInterpolator());

    transitionAnimHiddenView.startAnimation(startZ,
            0,
            TransitionAnimation.AnimationType.TRANSLATION_Z);

    transitionAnimHiddenView.startAnimation(startY,
            valueHandler.getMaxHeightHiddenView(position),
            TransitionAnimation.AnimationType.TRANSLATION_Y);

    transitionAnimHiddenView.startAnimation(firstScaleX,
            scaleX,
            TransitionAnimation.AnimationType.SCALE_X);

    transitionAnimHiddenView.startAnimation(firstScaleY,
            scaleY,
            TransitionAnimation.AnimationType.SCALE_Y);
}