908dd2a81879001d1a40d4ee017c3e41

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_08;

import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
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;
//	private TextView tv;
	private ListView lv;
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        set_ac01_r_layout();
    }
    private void set_ac01_r_layout()
    {
        RelativeLayout rel_layout = new RelativeLayout(this);
        setContentView(rel_layout);
        //--------------------------
        LayoutInflater inflate = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	    LinearLayout layout = (LinearLayout)inflate.inflate(R.layout.ac01, null);
        //---------------------------------------             
        layout.setId(1);
        RelativeLayout.LayoutParams rel_param = new RelativeLayout.LayoutParams(
        		RelativeLayout.LayoutParams.WRAP_CONTENT, 
        		RelativeLayout.LayoutParams.WRAP_CONTENT);
        rel_layout.addView(layout, rel_param);
        //---------------------------------------
        btn = (Button)findViewById(R.id.pu_btn);
        btn.setOnClickListener(this);
        btn2 = (Button)findViewById(R.id.exit_btn);
        btn2.setOnClickListener(this);
        //======================================
        LinearLayout layout_p = (LinearLayout)inflate.inflate(R.layout.pickup, null);
        layout_p.setId(2);
        //---------------------------------------             
        rel_param = new RelativeLayout.LayoutParams(
       		RelativeLayout.LayoutParams.WRAP_CONTENT, 
       		RelativeLayout.LayoutParams.WRAP_CONTENT); 
        rel_param.addRule(RelativeLayout.RIGHT_OF, 1);
        rel_layout.addView(layout_p, rel_param);
        lv = (ListView)layout_p.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);
      }
    public void onClick(View v) {
     	if (v == btn){
     		lv.setBackgroundColor(Color.BLUE);
     		}
         if(v == btn2){
       		  this.finish();
             }
       }
    OnItemClickListener listener = new OnItemClickListener()
    {
    	public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
 		   	TextView tv = (TextView)findViewById(R.id.tv);
 		    tv.setText("choice: " + data[arg2]);
 		    lv.setBackgroundColor(Color.DKGRAY);
 		} 
    };
}