Android开发教程之shape和selector的结合使用

<?xml version="1.0" encoding="utf-8" ?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
<!-- 默认时的背景图片--> 
<item android:drawable="@drawable/pic1" /> 
<!-- 没有焦点时的背景图片 --> 
<item 
android:state_window_focused="false" 
android:drawable="@drawable/pic_blue" 
/> 
<!-- 非触摸模式下获得焦点并单击时的背景图片 --> 
<item 
android:state_focused="true" 
android:state_pressed="true" 
android:drawable= "@drawable/pic_red" 
/> 
<!-- 触摸模式下单击时的背景图片--> 
<item 
android:state_focused="false" 
android:state_pressed="true" 
android:drawable="@drawable/pic_pink" 
/> 
<!--选中时的图片背景--> 
<item 
android:state_selected="true" 
android:drawable="@drawable/pic_orange" 
/> 
<!--获得焦点时的图片背景--> 
<item 
android:state_focused="true" 
android:drawable="@drawable/pic_green" 
/> 
</selector> 

<?xml version="1.0" encoding="utf-8"?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
<item android:state_selected="true"> 
<shape> 
<gradient android:angle="270" android:endColor="#99BD4C" 
android:startColor="#A5D245" /> 
<size android:height="60dp" android:width="320dp" /> 
<corners android:radius="8dp" /> 
</shape> 
</item> 
<item android:state_pressed="true"> 
<shape> 
<gradient android:angle="270" android:endColor="#99BD4C" 
android:startColor="#A5D245"/> 
<size android:height="60dp" android:width="320dp" /> 
<corners android:radius="8dp" /> 
</shape> 
</item> 
<item> 
<shape> 
<gradient android:angle="270" android:endColor="#A8C3B0" 
android:startColor="#C6CFCE" /> 
<size android:height="60dp" android:width="320dp" /> 
<corners android:radius="8dp" /> 
</shape> 
</item> 
</selector> 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="horizontal" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:background="@drawable/selector" 
> 
<ImageView 
android:id="@+id/img" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:layout_gravity="center_vertical" 
android:layout_marginLeft="20dp" 
/> 
<TextView 
android:text="data" 
android:id="@+id/title" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:gravity="center_vertical" 
android:layout_marginLeft="20dp" 
android:layout_marginTop="20dp" 
android:textSize="14sp" 
android:textStyle="bold" 
android:textColor="@color/black" 
> 
</TextView> 
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="vertical" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:background="#253853" 
> 
<ListView 
android:id="@+id/list" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:cacheColorHint="#00000000" 
android:divider="#2A4562" 
android:dividerHeight="3px" 
android:listSelector="#264365" 
android:drawSelectorOnTop="false" 
> 
</ListView> 
</LinearLayout> 

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
<color name="white">#FFFFFFFF</color> 
<color name="transparency">#00000000</color> 
<color name="title_bg">#1C86EE</color> 
<color name="end_color">#A0cfef83</color> 
<color name="black">#464646</color> 
</resources> 

package com.lingdududu.customlist; 
import java.util.ArrayList; 
import java.util.HashMap; 
import xb.customlist.R; 
import android.R.array; 
import android.app.Activity; 
import android.os.Bundle; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
public class MainActivity extends Activity { 
ListView list; 
String data[] = new String[]{ 
"China","UK","USA","Japan","German","Canada","ET","Narotu" 
}; 
/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 
list =(ListView) findViewById(R.id.list); 
SimpleAdapter adapter = new SimpleAdapter(this, getData(), R.layout.list_item, 
new String[]{"title","img"}, new int[]{R.id.title,R.id.img}); 
list.setAdapter(adapter); 
} 
private ArrayList<HashMap<String, Object>> getData() { 
ArrayList<HashMap<String, Object>> dlist = new ArrayList<HashMap<String,Object>>(); 
for(int i =0;i<data.length;i++){ 
HashMap<String, Object>map = new HashMap<String, Object>(); 
map.put("title", data[i]); 
map.put("img", R.drawable.item_left2); 
dlist.add(map); 
} 
return dlist; 
} 
}