控制View缩放与还原

private void toggleFullscreen(boolean isFullscreen) {
    if (isFullscreen) {
        // 从缩放状态恢复
        animateToOriginalSize();
        
    } else {
        // 切换到缩放状态
        animateToFullscreenOrScaled();
        
    }
}

/**
 * 缩放比例
 */
/**
*缩放往哪缩放还是看自己的需求
 ObjectAnimator translationX = ObjectAnimator.ofFloat(mLivePlayer, "translationX", 0f, -targetX); ObjectAnimator translationY = ObjectAnimator.ofFloat(mLivePlayer, "translationY", 0f, 0);
我这里y轴不动，x轴居中，所以translationY 中的参数是0，只修改translationX 就可以，根据自己的需求修改这里的参数就行
*/
private float scaleNumber = 0.6f;
private void animateToFullscreenOrScaled() {
    // 创建动画集合
    AnimatorSet animatorSet = new AnimatorSet();

    // 缩放动画 
    ObjectAnimator scaleX = ObjectAnimator.ofFloat(mLivePlayer, "scaleX", 1f, scaleNumber);
    ObjectAnimator scaleY = ObjectAnimator.ofFloat(mLivePlayer, "scaleY", 1f, scaleNumber);

    // 计算居左居中的位置
    // 缩放后宽度 = 原宽度 * 缩放比例
    float scaledWidth = mLivePlayer.getWidth() * scaleNumber;
    float targetX = scaledWidth*(1-scaleNumber);

    // 位置动画
    ObjectAnimator translationX = ObjectAnimator.ofFloat(mLivePlayer, "translationX", 0f, -targetX);
    ObjectAnimator translationY = ObjectAnimator.ofFloat(mLivePlayer, "translationY", 0f, 0);

    animatorSet.playTogether(scaleX, scaleY, translationX, translationY);
    animatorSet.setDuration(500);
    animatorSet.start();
}
/**
*动画还原方法基本没什么修改，可以直接用
/
private void animateToOriginalSize() {
    // 创建动画集合
    AnimatorSet animatorSet = new AnimatorSet();

    // 恢复原始大小（1f）
    ObjectAnimator scaleX = ObjectAnimator.ofFloat(mLivePlayer, "scaleX", scaleNumber, 1f);
    ObjectAnimator scaleY = ObjectAnimator.ofFloat(mLivePlayer, "scaleY", scaleNumber, 1f);

    // 恢复原始位置（回到 translationX=0, translationY=0）
    ObjectAnimator translationX = ObjectAnimator.ofFloat(mLivePlayer, "translationX", mLivePlayer.getTranslationX(), 0f);
    ObjectAnimator translationY = ObjectAnimator.ofFloat(mLivePlayer, "translationY", mLivePlayer.getTranslationY(), 0f);

    animatorSet.playTogether(scaleX, scaleY, translationX, translationY);
    animatorSet.setDuration(500);
    animatorSet.start();
}