设置进度条的样式

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"