Android Layer-list properties and use specific explanations

The properties of Android layer-list and use specific explanations. Layer-list is used to stack multiple layers of the display, this feature can do some special effects (such as: shadows, the following effects, etc.), can also be opportunistic.

1. Code slices

<?xml version= "1.0" encoding= "Utf-8"? ><layer-list xmlns:android= "http://schemas.android.com/apk/res/ Android >    <!--Recent projects require multiple layers stacked together to study layer-list in Android. The Layer-list in Android is used to display multiple layers stacked. -    <item>      <shape > <!--the first layer is blue--          <solid android:color= "@color/blue"/>      </shape>    </item>        <!--the color of the second layer. That is the topmost layer, because the second layer    moves two dp from the bottom of the view, so the first layer reveals a DP of black so it         gives a semblance of a bottom border---    <item android:bottom= " 2dip >        <shape>            <solid android:color= "@color/white"/>        </shape>    </ Item></layer-list>

2. Layout code and (be sure to note the use of Radiogroup to remember the write RadioButton ID, otherwise cannot switch )

    <radiogroup android:id= "@+id/rg" android:layout_below= "@id/bt2" android:layout_margin= "10dip" Android:layout_width= "Match_parent" android:layout_height= "wrap_content" android:orientation= "Horizo        Ntal "> <radiobutton android:id=" @+id/rb0 "android:layout_height=" Wrap_content "        Android:layout_width= "0dip" android:layout_weight= "1" android:button= "@null" android:text= "category" Android:checked= "true" android:gravity= "center" android:textcolor= "@color/black" android:background= "@drawable/ch_bg" android:layout_margintop= "2dip" android:paddingbottom= "4dip"/> <radio        Button android:id= "@+id/rb1" android:layout_height= "wrap_content" android:layout_width= "0dip" android:layout_weight= "1" android:text= "category" Android:button= "@null" android:gravity= "center" a Ndroid:textcolor= "@color/black "android:background=" @drawable/ch_bg "android:layout_margintop=" 2dip "android:paddingbottom=" 4 Dip "/> </RadioGroup>

Selector Selector

<?
XML version= "1.0" encoding= "Utf-8"? ><selector xmlns:android= "Http://schemas.android.com/apk/res/android" >    <item android:state_checked= "true" android:drawable= "@drawable/bg_li" ></item>    <item Android:state_checked= "false" android:drawable= "@color/white" ></item></selector>

3. Code slices

<?xml version= "1.0dip" encoding= "Utf-8"? ><layer-list xmlns:android= "http://schemas.android.com/apk/res/ Android ">    <item>        <bitmap android:src=" @drawable/ic_launcher "            android:gravity=" center "/ >    </item>    <item android:left= "10dip" android:top= "10dip" >        <bitmap android:src= "@ Drawable/ic_launcher "            android:gravity=" center "/>    </item>    <item android:left=" 20dip " android:top= "20dip" >        <bitmap android:src= "@drawable/ic_launcher"            android:gravity= "center"/>    </item>    <item android:left= "30dip" android:top= "30dip" >        <bitmap android:src= "@ Drawable/ic_launcher "            android:gravity=" center "/>    </item></layer-list>

4. Code slices

<?xml version= "1.0" encoding= "Utf-8"? ><layer-list xmlns:android= "http://schemas.android.com/apk/res/ Android ">        <item android:drawable=" @drawable/ic_launcher "></item>    <item android:left=" 10dip "android:top=" 10dip "android:drawable=" @drawable/ic_launcher "></item>    <item android:left=" 20dip "android:top=" 20dip "android:drawable=" @drawable/ic_launcher "></item>    <item android:left=" 30dip "android:top=" 30dip "android:drawable=" @drawable/ic_launcher "></item></layer-list>

5. Knowledge Base Connection:

http://blog.csdn.net/brokge/article/details/9713041
Http://www.aitinan.com/4004.html
Http://www.cnblogs.com/tsoorr/p/3407935.html
Http://www.cnblogs.com/ithouge/articles/ithouge-android-layer-list-shape-corners.html
Http://www.linuxidc.com/Linux/2012-05/59827.htm

Properties and use specific explanations for Android layer-list