安卓listview 入门级实例

【实例截图】

【核心代码】

package com.example.myfirstandroidpro;

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

 

import android.os.Bundle;
import android.app.Activity;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
  private ListView  MyListview;
  private final static int MENU_ITEM_COUNTER = 0;
	
	  
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		MyListview =(ListView)findViewById(R.id.lv);
		 
		
		ArrayList<HashMap<String ,Object>> listitem=new ArrayList<HashMap<String,Object>>(); 
		
		for(int i=0;i<10;i  )
		{
			HashMap<String,Object>  map=new HashMap<String,Object>();			
 		    map.put("ItemTitle", "项目" i);
 		    map.put("ItemText", ".net小项目" i);
 		    listitem.add(map);		
		}
		SimpleAdapter listitemAdapter=new SimpleAdapter(this,listitem,R.layout.listview,
				new String[]{"ItemTitle","ItemText"},
				new int[]{R.id.topTextView,R.id.bottomTextView}												
				);
		MyListview.setAdapter(listitemAdapter);
		
	MyListview.setOnItemClickListener(new OnItemClickListener(){
	
    @Override
	public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
    	
    	RelativeLayout lr=(RelativeLayout)arg1; 
    	TextView mText=(TextView)lr.getChildAt(1); 
		Toast.makeText(MainActivity.this, "你點擊了第" arg2 "項的" mText.getText().toString(),
				1000).show();
	}
		
		
	});
	}

    
    
    @Override  
    public boolean onCreateOptionsMenu(Menu menu) {  
    	
   
       
       menu.add(0, MENU_ITEM_COUNTER, 0, ".net项目");  
       menu.add(0, MENU_ITEM_COUNTER   1, 0, "java项目");  
       menu.add(0, MENU_ITEM_COUNTER   2, 0, "嵌入式项目");  
    
        return super.onCreateOptionsMenu(menu);  
    }  

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		
		TextView myTextView=(TextView)findViewById(R.id.infoTextView);
		switch (item.getItemId()) {
		
		case MENU_ITEM_COUNTER:
			myTextView.setText("You click "   item.getTitle().toString()
					  "Menu");
			break;
		case MENU_ITEM_COUNTER   1:
			myTextView.setText("You click "   item.getTitle().toString()
					  "Menu");
			break;
		case MENU_ITEM_COUNTER   2:
			myTextView.setText("You click "   item.getTitle().toString()
					  "Menu");
			break;
		 default:  

				break;
		}
		return super.onOptionsItemSelected(item);
		 
	}
 
  

	  

}