basic view

package net.learn2develop.BasicViews5;

import android.app.ListActivity;
import android.os.Bundle;

import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends ListActivity {	//注意此处是ListActivity而不是Activity
	
	 String[] presidents = {
	            "Dwight D. Eisenhower",
	            "John F. Kennedy",
	            "Lyndon B. Johnson",
	            "Richard Nixon",
	            "Gerald Ford",
	            "Jimmy Carter",
	            "Ronald Reagan",
	            "George H. W. Bush",
	            "Bill Clinton",
	            "George W. Bush",
	            "Barack Obama"
	    };

	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        
       setListAdapter (new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_checked, presidents));
    }
    
    public void onListItemClick(
    ListView parent, View v, int position, long id) 
    {   
    	
        Toast.makeText(this, 
    	    "You have selected " + presidents[position], 
            Toast.LENGTH_SHORT).show();
    }  
};

运行效果如下：