ac01.java

Google Android应用框架原理与程序设计 第三版(中文高清PDF)高焕堂

package com.misoo.ex01_07;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

public class ac01 extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
    private String[] data = {"Item-1", "Item-2", "Item-3"};
    private Button btn, btn2;
	@Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        set_ac01_layout();
	}
	public void set_ac01_layout()
	{
        setContentView(R.layout.ac01);
        btn = (Button)findViewById(R.id.pu_btn);
        btn.setOnClickListener(this);
        btn2 = (Button)findViewById(R.id.exit_btn);
        btn2.setOnClickListener(this);
     }
    
   public void onClick(View v) {
 	if (v == btn){
 		this.set_pu_layout();
       }
     if(v == btn2){
   		  this.finish();
         }
   }
//=========================== ================
   public void set_pu_layout(){
	        setContentView(R.layout.pickup);
            ListView lv  = (ListView)findViewById(R.id.list);
            ArrayAdapter<String> arrayAdapter
                = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, data);
            lv.setAdapter(arrayAdapter);
            lv.setOnItemClickListener(listener);
          }
   OnItemClickListener listener = new OnItemClickListener()
   {
   	public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
			set_ac01_layout();
		 	TextView tv = (TextView)findViewById(R.id.tv);
		    tv.setText("choice: " + data[arg2]);		       
		} 
   };
}