android 圆角item shape

先上效果图：

就是一个类似微信qq那种item的shape。

即时上代码，少废话。

以下文件均为drawable文件夹下

文件：shape_general_item_top_bg_up.xml

<?xml version="1.0" encoding="UTF-8"?>  
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
    <item>  
        <shape>  
            <solid android:color="@android:color/white" />  
            <!-- 圆角 -->
            <corners
                android:topLeftRadius="5dp"
                android:topRightRadius="5dp"
                android:bottomLeftRadius="0dp"
                android:bottomRightRadius="0dp"
                /><!-- 设置圆角半径 -->
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_COLOR" />  
        </shape>  
    </item>  
    <item android:top="1dp" android:left="1dp" android:right="1dp" android:bottom="1dp">  
        <shape>  
            <solid android:color="@android:color/white" />
            <!-- 圆角 -->
            <corners
                android:topLeftRadius="5dp"
                android:topRightRadius="5dp"
                android:bottomLeftRadius="0dp"
                android:bottomRightRadius="0dp"
                /><!-- 设置圆角半径 -->
            <!-- 间隔 -->
            <padding
                android:left="2dp"
                android:top="0dp"
                android:right="2dp"
                android:bottom="0dp"/><!-- 各方向的间隔 -->
            <stroke android:width="1dp" android:color="@android:color/white" />  
        </shape>  
    </item>  
</layer-list>  

文件：shape_general_item_top_bg_down.xml

<?xml version="1.0" encoding="UTF-8"?>  
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
    <item>  
        <shape>  
            <solid android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" /> 
            <!-- 圆角 -->
            <corners
                android:topLeftRadius="5dp"
                android:topRightRadius="5dp"
                android:bottomLeftRadius="0dp"
                android:bottomRightRadius="0dp"
                /><!-- 设置圆角半径 -->
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_COLOR" />  
        </shape>  
    </item>  
    <item android:top="1dp" android:left="1dp" android:right="1dp" android:bottom="1dp">  
        <shape>  
            <solid android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" />
            <!-- 圆角 -->
            <corners
                android:topLeftRadius="5dp"
                android:topRightRadius="5dp"
                android:bottomLeftRadius="0dp"
                android:bottomRightRadius="0dp"
                /><!-- 设置圆角半径 -->
            <!-- 间隔 -->
            <padding
                android:left="2dp"
                android:top="0dp"
                android:right="2dp"
                android:bottom="0dp"/><!-- 各方向的间隔 -->
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" />  
        </shape>  
    </item>  
</layer-list>  

文件：shape_general_item_down_bg_up.xml

<?xml version="1.0" encoding="UTF-8"?>  
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
    <item>  
        <shape>  
            <solid android:color="@android:color/white" />  
            <!-- 圆角 -->
            <corners
                android:topLeftRadius="0dp"
                android:topRightRadius="0dp"
                android:bottomLeftRadius="5dp"
                android:bottomRightRadius="5dp"
                /><!-- 设置圆角半径 -->
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_COLOR" />  
        </shape>  
    </item>  
    <item android:left="1dp" android:right="1dp" android:bottom="1dp">  
        <shape>  
            <solid android:color="@android:color/white" />
            <!-- 圆角 -->
            <corners
                android:topLeftRadius="0dp"
                android:topRightRadius="0dp"
                android:bottomLeftRadius="5dp"
                android:bottomRightRadius="5dp"
                /><!-- 设置圆角半径 -->
            <!-- 间隔 -->
            <padding
                android:left="2dp"
                android:top="0dp"
                android:right="2dp"
                android:bottom="0dp"/><!-- 各方向的间隔 -->
            <stroke android:width="1dp" android:color="@android:color/white" />  
        </shape>  
    </item>  
</layer-list>  

文件：shape_general_item_down_bg_down.xml

<?xml version="1.0" encoding="UTF-8"?>  
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
    <item>  
        <shape>  
            <solid android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" /> 
            <!-- 圆角 -->
            <corners
                android:topLeftRadius="0dp"
                android:topRightRadius="0dp"
                android:bottomLeftRadius="5dp"
                android:bottomRightRadius="5dp"
                /><!-- 设置圆角半径 -->
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_COLOR" />  
        </shape>  
    </item>  
    <item android:left="1dp" android:right="1dp" android:bottom="1dp">  
        <shape>  
            <solid android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" />
            <!-- 圆角 -->
            <corners
                android:topLeftRadius="0dp"
                android:topRightRadius="0dp"
                android:bottomLeftRadius="5dp"
                android:bottomRightRadius="5dp"
                /><!-- 设置圆角半径 -->
            <!-- 间隔 -->
            <padding
                android:left="2dp"
                android:top="0dp"
                android:right="2dp"
                android:bottom="0dp"/><!-- 各方向的间隔 -->
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" />  
        </shape>  
    </item>  
</layer-list>  

文件：shape_general_item_center_bg_up.xml

<?xml version="1.0" encoding="UTF-8"?>  
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
    <item>  
        <shape>  
            <solid android:color="@android:color/white" />  
            <corners  />  
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_COLOR" />  
        </shape>  
    </item>  
    <item android:left="1dp" android:right="1dp" android:bottom="1dp">  
        <shape>  
            <solid android:color="@android:color/white" />  
            <!-- 间隔 -->
            <padding
                android:left="2dp"
                android:top="0dp"
                android:right="2dp"
                android:bottom="0dp"/><!-- 各方向的间隔 -->
            <corners  />  
            <stroke android:width="1dp" android:color="@android:color/white" />  
        </shape>  
    </item>  
</layer-list>  

文件：shape_general_item_center_bg_down.xml

<?xml version="1.0" encoding="UTF-8"?>  
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
    <item>  
        <shape>  
            <solid android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" />  
            <corners  />  
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_COLOR" />  
        </shape>  
    </item>  
    <item android:left="1dp" android:right="1dp" android:bottom="1dp">  
        <shape>  
            <solid android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" /> 
            <!-- 间隔 -->
            <padding
                android:left="2dp"
                android:top="0dp"
                android:right="2dp"
                android:bottom="0dp"/><!-- 各方向的间隔 -->
            <corners  />  
            <stroke android:width="1dp" android:color="@color/GENERAL_ITEM_STROKE_DOWN_COLOR" />  
        </shape>  
    </item>  
</layer-list>  

以上为上中下的边框keyup keydown状态

以下是selector

文件：general_item_top_bg_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector
  xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
    android:drawable="@drawable/shape_general_item_top_bg_down"/>
    <item android:state_pressed="false"
    android:drawable="@drawable/shape_general_item_top_bg_up"/>  
</selector>

文件：general_item_center_bg_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector
  xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
    android:drawable="@drawable/shape_general_item_center_bg_down"/>
    <item android:state_pressed="false"
    android:drawable="@drawable/shape_general_item_center_bg_up"/>  
</selector>

文件：general_item_down_bg_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector
  xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
    android:drawable="@drawable/shape_general_item_down_bg_down"/>
    <item android:state_pressed="false"
    android:drawable="@drawable/shape_general_item_down_bg_up"/>  
</selector>

以上三个selector直接应用即可，文件名这么凸显了，相信众屌也能懂。

如有改进或错误之处，不怜赐教。