listview simpleadapter

android listview

list_items.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/Layout01"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" >

    <ImageView
        android:id="@+id/ItemImage"
        android:layout_width="60dip"
        android:layout_height="60dip" />

    <TextView
        android:id="@+id/ItemTitle"
        android:layout_width="134dp"
        android:layout_height="wrap_content"
        android:text="TextView01"
        android:textSize="20dip" />

    <TextView
        android:id="@+id/ItemText"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="TextView01"
        android:textSize="20dip" />
</LinearLayout>

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" >
    </ListView>

</RelativeLayout>

MainActivity.java

package com.example.simple;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;



import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnCreateContextMenuListener;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;

public class MainActivity extends Activity {

	private final String TAG="simple";
	
	private ListView mListView ;
	private ArrayList<HashMap<String, Object>> mArrayList;
	
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		
		
		mArrayList = new ArrayList<HashMap<String, Object>>() ;
		mListView = (ListView) findViewById(R.id.listView1);


		//每个map包含3个元素，
		//名字分别是ItemImage，ItemTitle，ItemText
		//和list_items.xml中的元素名对应
		//list_items.xml中也有3个元素，元素名同上
		//即map----list_items.xml
		
		//map的容器即mArrayList 和 list_items.xml的容器即mListView对应
		
		//添加数据
        for(int i=0;i<120;i++)
        {
        	//一个map里面有3项，分别对应
        	HashMap<String, Object> map = new HashMap<String, Object>();
        	map.put("ItemImage", R.drawable.ic_launcher);//图像资源的ID
        	map.put("ItemTitle","itemtitle "+String.valueOf(i));
        	map.put("ItemText", "itemtext "+String.valueOf(i));
        	mArrayList.add(map);
        }
        
        //生成适配器的Item和map元素对应
        SimpleAdapter listItemAdapter = new SimpleAdapter(this,mArrayList,//数据源 
            R.layout.list_items,//list_items.xml--绑定
            //map的子元素 ，分别是ItemImage,ItemTitle,ItemText
            //如果map中没有其中某个元素比如ItemTitle，则在R.id.ItemTitle证将不会有东西显示
            new String[] {"ItemImage","ItemTitle", "ItemText"}, 
            //list_items.xml的子元素，分别是如下
            new int[] {R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}
        );
       
        //添加并且显示
        mListView.setAdapter(listItemAdapter);
        
        //单机事件
        mListView.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				// TODO Auto-generated method stub
				
			
				HashMap<String, Object> map = mArrayList.get(position);
				String title =  map.get("ItemTitle").toString();
				setTitle(title);
				
			}
		});
        
        
        
      //添加长按点击事件
        mListView.setOnItemLongClickListener(new OnItemLongClickListener() {

			@Override
			public boolean onItemLongClick(AdapterView<?> parent, View view,
					int position, long id) {
				// TODO Auto-generated method stub
				
				HashMap<String, Object> map = mArrayList.get(position);
				String title =  map.get("ItemTitle").toString();
				setTitle("long "+title);
				
				
				return false;
			}
        	
		});
        

      
        //添加长按点击事件,弹出菜单
        mListView.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
			
			@Override
			public void onCreateContextMenu(ContextMenu menu, View v,
											ContextMenuInfo menuInfo) {
				
				menu.setHeaderTitle("delete me?");   
				menu.add(0, 0, 0, "Yes");
				menu.add(0, 1, 0, "Cancel");   
				
				
			}
		}); 
		
        
    }
	

	
	//弹出菜单处理函数
	@Override
	public boolean onContextItemSelected(MenuItem item) {

		Log.i(TAG, "点击了长按菜单里面的第"+item.getItemId()+"个项目");
	
		
		return super.onContextItemSelected(item);
	}


	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
	
	
	

}