匀速不间断旋转动画

xml：

<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:andro >
</rotate>

 

代码：

mAnim = AnimationUtils.loadAnimation(this, R.anim.video_prepare_rotate);

  LinearInterpolator lir = new LinearInterpolator();

  mAnim.setInterpolator(lir);

  mVideoPrepareImg = (ImageView) findViewById(R.id.img_video_prepare);

  mVideoPrepareImg.startAnimation(mAnim);