1、普通圆角背景
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#cccccc"/>
<corners
android:radius="10dp"/>
</shape>
2、部分圆角渐变背景
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:angle="0"
android:endColor="#cccccc"
android:startColor="#222222" />
<corners
android:bottomLeftRadius="10dp"
android:bottomRightRadius="10dp"
android:topLeftRadius="0dp"
android:topRightRadius="0dp" />
</shape>
3、叠加部分圆角渐变背景
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:left="42dp"
android:right="42dp">
<shape android:shape="rectangle">
<solid android:color="#00ff00"/>
<corners
android:bottomLeftRadius="10dp"
android:bottomRightRadius="10dp"
android:topLeftRadius="0dp"
android:topRightRadius="0dp" />
</shape>
</item>
<item android:bottom="10dp"
android:left="21dp"
android:right="21dp">
<shape android:shape="rectangle" >
<solid android:color="#ff0000"/>
<corners
android:bottomLeftRadius="10dp"
android:bottomRightRadius="10dp"
android:topLeftRadius="0dp"
android:topRightRadius="0dp" />
</shape>
</item>
<item android:bottom="20dp">
<shape android:shape="rectangle" >
<gradient
android:angle="0"
android:endColor="#cccccc"
android:startColor="#222222" />
<corners
android:topLeftRadius="0dp"
android:topRightRadius="0dp"
android:bottomRightRadius="10dp"
android:bottomLeftRadius="10dp"/>
</shape>
</item>
</layer-list>
4、底边框背景
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:right="-2dp"
android:left="-2dp">
<shape>
<solid android:color="@android:color/transparent"/>
<stroke
android:width="0.5dp"
android:color="#ff0000"/>
</shape>
</item>
</layer-list>