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首先,在res下面新建一个文件夹drawable,在drawable下面新建三个xml文件:shape_corner_down.xml、shape_corner_up.xml和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、android:topRightRadius、android:bottomLeftRadius、android:bottomRightRadius分别是左上角、右上角、左下角、右下角的半径值,设置了半径值,相应的角就是圆角,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:

http://www.cnblogs.com/mstk/p/3539587.html
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原文地址:http://www.cnblogs.com/shanzei/p/4649010.html