android实现View增加带阴影的边框,渐变阴影边框，渐变边框

android实现View增加带阴影的边框,渐变阴影边框，渐变色边框，，

直接上代码。

在res---> drawable里创建资源drawable文件，

gradient_borde.xml

Root element 选择 layer-list

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#0a8c8c8c" />
            <corners android:radius="8dp" />
            <padding android:bottom="2px"
                android:left="2px"
                android:right="2px"
                android:top="2px" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#0fd7d7d7" />
            <corners android:radius="8dp" />
            <padding android:bottom="2px"
                android:left="2px"
                android:right="2px"
                android:top="2px" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#14c7c7c7" />
            <corners android:radius="8dp" />
            <padding android:bottom="2px"
                android:left="2px"
                android:right="2px"
                android:top="2px" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#19c1c1c1" />
            <corners android:radius="8dp" />
            <padding android:bottom="2px"
                android:left="2px"
                android:right="2px"
                android:top="2px" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#1ec6c6c6" />
            <corners android:radius="8dp" />
            <padding android:bottom="2px"
                android:left="2px"
                android:right="2px"
                android:top="2px" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#23b7b7b7" />
            <corners android:radius="8dp" />
            <padding android:bottom="2px"
                android:left="2px"
                android:right="2px"
                android:top="2px" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#28aeaeae" />
            <corners android:radius="8dp" />
            <padding android:bottom="2px"
                android:left="2px"
                android:right="2px"
                android:top="2px"  />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#2d9e9e9e" />
            <corners android:radius="8dp" />
            <padding android:bottom="2px"
                android:left="2px"
                android:right="2px"
                android:top="2px" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle" >
            <corners android:radius="10dp" />
            <gradient
                android:angle="0"
                android:startColor="@color/colorWhite"
                android:endColor="@color/colorWhite"/>
        </shape>
    </item>
</layer-list>

然后在而已文件中 增加 

android:background="@drawable/gradient_borde"

或者在代码中增加

view.setBackgroundResource(R.drawable.gradient_borde);