注:同样的方法可以设置四大布局的背景
在drawable下面新建三个xml文件:
shape_corner_down.xml、
shape_corner_up.xml、
shape_corner.xml,
分别是下面两个角是圆角边框,上面两个角是圆角边框,四个角全部是圆角边框。
shape_corner_down.xml:
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<?xml version=
"1.0"
encoding=
"utf-8"
?>
<solid android:color=
"#0099CC"
/>
<corners android:bottomRightRadius=
"20dp"
android:bottomLeftRadius=
"20dp"
/>
<stroke android:width=
"1dp"
android:color=
"#000000"
/>
</shape>
|
shape_corner_up.xml:
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<?xml version=
"1.0"
encoding=
"utf-8"
?>
<solid android:color=
"#CCCC99"
/>
<corners android:topLeftRadius=
"20dp"
android:topRightRadius=
"20dp"
/>
<stroke android:width=
"1dp"
android:color=
"#000000"
/>
</shape>
|
shape_corner.xml:
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<?xml version=
"1.0"
encoding=
"utf-8"
?>
<solid android:color=
"#99CCFF"
/>
<corners android:topLeftRadius=
"20dp"
android:topRightRadius=
"20dp"
android:bottomRightRadius=
"20dp"
android:bottomLeftRadius=
"20dp"
/>
<stroke android:width=
"1dp"
android:color=
"#000000"
/>
</shape>
|
<solid android:color>设置了背景颜色。
android:topLeftRadius:左上角的半径值
android:topRightRadius:右上角的半径值
android:bottomLeftRadius:左下角的半径值
android:bottomRightRadius:右下角的半径值
半径值越大,圆角就越大。
<stroke>设置边界属性,如边界的宽度、颜色等。
在activity_main.xml上面放置三个LinearLayout,分别设置android:background属性为shape_corner_up.xml、shape_corner_down.xml和shape_corner.xml,运行结果如下: