android - Android ScaleAnimation 不在屏幕中心

Question

在 ImageView 上实用地设置缩放动画时，我遇到了一些问题。基本上我有并且图像视图设置中心 H/V，但是当我应用动画时它会关闭它：(...Iv 读到枢轴 x/y 设置为 50%，但它似乎不起作用，任何反馈都会很棒...下面的屏幕截图

    AnimationSet set = new AnimationSet(true);
    Animation animation = new ScaleAnimation(1, 1.2f, 1, 1.2f, Animation.ABSOLUTE, 50,    Animation.ABSOLUTE, 50);
    animation.setDuration(500);
    animation.setRepeatCount(-1);
    animation.setRepeatMode(Animation.RESTART);
    set.addAnimation(animation);

    animation = new ScaleAnimation(1.2f, 1.4f, 1.2f, 1.4f, Animation.ABSOLUTE, 50, Animation.ABSOLUTE, 50);
    animation.setDuration(500);
    animation.setRepeatCount(-1);
    animation.setRepeatMode(Animation.RESTART);
    set.addAnimation(animation);

    animation = new ScaleAnimation(1.4f, 1.0f, 1.4f, 1.0f, Animation.ABSOLUTE, 50, Animation.ABSOLUTE, 50);
    animation.setDuration(500);
    animation.setRepeatCount(-1);
    animation.setRepeatMode(Animation.RESTART);
    set.addAnimation(animation);

    image_view.startAnimation(set);

Answer 1

也许Animation.RELATIVE_TO_SELF或Animation.RELATIVE_TO_PARENT会做这项工作？例子：

new ScaleAnimation(1, 1.2f, 1, 1.2f,
            Animation.RELATIVE_TO_SELF, 0.5f,
            Animation.RELATIVE_TO_SELF, 0.5f));

将两者都视为0.5f50%，从左/上数