<----- 自定义横向渐变 --------->
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@android:id/background">
<shape>
<corners android:radius="50dp" />
<solid android:color="@android:color/transparent" />
</shape>
</item>
<item android:id="@android:id/progress">
<clip>
<shape>
<corners android:radius="@dimen/dp_100" />
<gradient
android:angle="0"
android:endColor="#12d59d"
android:startColor="#65f2ff"
android:type="linear" />
</shape>
</clip>
</item>
</layer-list>
<----- 自定义纵向渐变 --------->
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@android:id/background">
<shape>
<corners android:radius="50dp" />
<solid android:color="@android:color/transparent" />
</shape>
</item>
<item android:id="@android:id/progress">
<clip android:gravity="bottom"
android:clipOrientation="vertical">
<shape android:shape="rectangle">
<gradient android:type="linear" android:angle="90" android:centerY="0.75" android:startColor="#05F3CE" android:centerColor="#03DC9E" android:endColor="#04CBB7"/>
<corners android:radius="20dp"/>
</shape>
</clip>
</item>
</layer-list>