ANDROID佈局實現圓角邊框

首先,在res下面新建一個文件夾drawable,在drawable下面新建三個xml文件:shape_corner_down.xml、shape_corner_up.xml和shape_corner.xml,分別是下面兩個角是圓角邊框,上面兩個角是圓角邊框,四個角所有是圓角邊框。android

shape_corner_down.xml:spa

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<?xml version="1.0" encoding="utf-8"?>table

<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <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"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <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"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <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>設置了背景顏色。android:topLeftRadius、android:topRightRadius、android:bottomLeftRadius、android:bottomRightRadius分別是左上角、右上角、左下角、右下角的半徑值,設置了半徑值,相應的角就是圓角,半徑值越大,圓角就越大。<stroke>設置邊界屬性,如邊界的寬度、顏色等。

在activity_main.xml上面放置三個LinearLayout,分別設置android:background屬性爲shape_corner_up.xml、shape_corner_down.xml和shape_corner.xml,運行結果以下:

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