Drawable 下定义一个会旋转的ui

Drawable 下定义一个会旋转的ui

<rotate
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="50%"
android:pivotY="50%"
android:drawable="@drawable/default_ptr_rotate"

>
<shape
android:innerRadius="12dp"
android:shape="ring"
android:thickness="3dp"
android:useLevel="false"

>
<gradient
android:endColor="@color/cn_write"
android:centerColor="@color/cn_write"
android:startColor="@color/cn_blue" />
</shape>
</rotate>