<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXDelta="100%"
android:toXDelta="0%"
android:duration="200"
>
</translate>
1 布局中的ProgressBar
<ProgressBar
android:id="@+id/pb_call_loading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:indeterminateDrawable="@drawable/pd_loadind_rotate"
/>
2 indeterminateDrawable：在drawable目录下建xml文件 可以让ProgressBar旋转
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/loading"
android:fromDegrees="0"
android:toDegrees="1440"
android:pivotX="50%"
android:pivotY="50%"
>
</rotate>
另：一般的动画资源文件在res/anim目录下
<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXDelta="-100%"
android:toXDelta="0%"
android:duration="200"
>
</translate>
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