创建shape文件
shape文件中的代码
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <solid android:color="#D3D3D3" /> <corners android:topLeftRadius="20dip" android:topRightRadius="20dip" android:bottomLeftRadius="20dip" android:bottomRightRadius="20dip"/>
</shape>