android开发最常用例子整理----(2)自定义ListView(SimpleAdapter实现)

一、Activity

MainActivity.java源码：

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public class MainActivity extends Activity {
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		//Step1
		String[] contentArray = new String[]{"内容1","内容2","内容3","内容4","内容5"};
		ListView lv = (ListView)findViewById(R.id.lv);
		
		//Step2
		ArrayList<HashMap<String,Object>> lists = new ArrayList<HashMap<String,Object>>();
		for(int i=0; i<contentArray.length; i++){
			HashMap<String,Object> map = new HashMap<String,Object>();
			map.put("startTimeText", "22:00");
            map.put("endTimeText", "23:00");
            map.put("separator", R.drawable.separator);
            map.put("content", contentArray[i]);
            lists.add(map);
		}
		
		//Step3
		SimpleAdapter adapter = new SimpleAdapter(
				this,
				lists,
				R.layout.list_item,
				new String[]{"startTimeText","endTimeText","separator","content"},
				new int[] {R.id.startTimeText,R.id.endTimeText,R.id.separator,R.id.content});
		
		//Step4
		lv.setAdapter(adapter);
	}
}

二、xml布局文件

(1)MainActivity主界面的布局源码activity_main.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ListView
	    android:id="@+id/lv"
 		android:layout_width="match_parent"     
		android:layout_height="wrap_content"/>

</LinearLayout>

(1)ListView列表单元的布局源码list_item.xml:

<?xml version="1.0" encoding="utf-8" ?>
 <LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
	android:layout_height="60dp" 
	android:gravity="center_vertical"
	android:layout_width="match_parent"
	android:orientation="horizontal"> 
	
      <LinearLayout 
        android:layout_width="0dp"
        android:layout_height="match_parent" 
		android:layout_weight="2"
		android:gravity="center_vertical"
		android:orientation="vertical">
          <TextView
              android:id="@+id/startTimeText"
              android:layout_height="wrap_content" 
			  android:layout_width="match_parent"
			  android:text="22:00"/>
          <TextView
              android:id="@+id/endTimeText"
              android:layout_height="wrap_content"
			  android:layout_width="match_parent"
			  android:text="23:00"/>
      </LinearLayout>
      
	<ImageView 
	    android:id="@+id/separator"
	    android:layout_weight="1"
 	    android:layout_width="0dp"
		android:layout_height="wrap_content" 
		/> 

	 <TextView
	    android:id="@+id/content" 
 	    android:layout_width="0dp"
	    android:layout_height="wrap_content" 
		android:layout_weight="12"/> 
</LinearLayout>