新建 progress_drawable.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<!--进度条的背景颜色-->
<item android:id="@android:id/background">
<shape>
<corners android:radius="@dimen/dp_4" />
<solid android:color="#8768FC" />
</shape>
</item>
<!--进度条的进度的颜色-->
<item android:id="@android:id/progress">
<clip android:clipOrientation="horizontal">
<shape>
<corners android:radius="@dimen/dp_4" />
<solid android:color="#896AFF" />
</shape>
</clip>
</item>
</layer-list>
设置进度条的 progressDrawable 属性 android:progressDrawable="@drawable/progress_drawable"
