安卓在linearLayout或者其他一些组件底部添加阴影

有两种解决方案：

1、使用9-patch 图片，制作一个阴影部分的图片，然后横向拉伸即可

 

2、使用layer-list

• 在res/drawable下，新建background_with_shadow.xml文件，该文件代码如下：

xml  version = "1.0"  encoding = "utf-8" ?>
< layer-list  xmlns:android = "http://schemas.android.com/apk/res/android" >" target="_blank">http://schemas.android.com/apk/res/android" > a >


    < item >
        < shape  android:shape = "rectangle"  >

            < gradient
                android:angle = "90"
                android:centerColor = "#bbbbbb"
                android:endColor = "#d5d5d5"
                android:startColor = "#a9a09d"  />
            < corners  android:radius = "5dp"  />
        shape >
    item >


    < item  android:bottom = "2dp" >
        < shape  android:shape = "rectangle"  >
            < solid  android:color = "#50c1e9"  />
            < corners  android:radius = "5dp"  />
        shape >
    item >

layer-list >

• 使用background_with_shadow.xml文件

    假设有bottom_shadow.xml文件，内容如下：

xml  version = "1.0"  encoding = "utf-8" ?>
< LinearLayout  xmlns:android = "http://schemas.android.com/apk/res/android""  target = "_blank" >http://schemas.android.com/apk/res/android" a >
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#bfbfbf">

    < LinearLayout
        android:layout_marginTop = "40dp"
        android:layout_width = "match_parent"
        android:layout_height = "40dp"
        android:orientation = "vertical"
        android:background = "@drawable/background_with_shadow" >
    LinearLayout >

    < TextView
        android:layout_marginTop = "20dp"
        android:layout_marginLeft = "20dp"
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:text = "短址赚" />

LinearLayout >

•  出处：http://nuil.cn/topic/104924/