Drawable 围绕其中心旋转 Android

Drawable Rotating around its center Android(Drawable 围绕其中心旋转 Android)

问题描述

我得到以下代码的奇怪结果:

I am getting strange results with the following code:

iv = (ImageView) findViewById(R.id.iv);
        iv.setImageResource(R.drawable.spinner_white_76);

        Animation a = new RotateAnimation(0.0f, 360.0f,
                Animation.RELATIVE_TO_SELF, iv.getDrawable()
                        .getIntrinsicWidth() / 2, Animation.RELATIVE_TO_SELF,
                iv.getDrawable().getIntrinsicHeight() / 2);
        a.setRepeatCount(-1);
        a.setDuration(1000);

        iv.startAnimation(a);

指定轴点(drawable的中心)的正确方法是什么?

Whats the right way to specify the axis point (center of the drawable)?

推荐答案

觉得自己很蠢！花一些时间仔细阅读文档后让它工作:

Feel stupid! Got it to work after spending some time closely reading the documentation:

Animation a = new RotateAnimation(0.0f, 360.0f,
                Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
                0.5f);
        a.setRepeatCount(-1);
        a.setDuration(1000);

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