Android-TQC109 AlertDialog顯示結果

學習重點:
(1)利用 button與AlertDialog結合利用

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package COM.TQC.GDD01;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioButton;

public class GDD01 extends Activity {
  private EditText et;
  private RadioButton rb1;
  private RadioButton rb2;
  private CheckBox cb1;
  private CheckBox cb2;
  private CheckBox cb3;
  private Button button;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    et = (EditText) findViewById(R.id.name);
    rb1 = (RadioButton) findViewById(R.id.rButton1);
    rb2 = (RadioButton) findViewById(R.id.rButton2);
    cb1 = (CheckBox) findViewById(R.id.cBox1);
    cb2 = (CheckBox) findViewById(R.id.cBox2);
    cb3 = (CheckBox) findViewById(R.id.cBox3);
    button = (Button) findViewById(R.id.button1);
        
    button.setOnClickListener(new Button.OnClickListener(){

      public void onClick(View v){
     String s="";
     String b =""; 
        if(!et.getText().toString().equals("")){
         s += "姓名："+et.getText().toString()+"\n";
        }else{
         s += "姓名：未填\n";
        }
        
        if(rb1.isChecked()){
         s +="性別："+rb1.getText().toString()+"\n";
        }else{
         s +="性別："+rb2.getText().toString()+"\n";
        }
        
        
        if(cb1.isChecked()){
         b +=cb1.getText().toString()+",";
        }
        if(cb2.isChecked()){
         b +=cb3.getText().toString()+",";
        }
        if(cb3.isChecked()){
         b +=cb2.getText().toString()+",";
        }
        
        if(!b.equals("")){
         s += "興趣：" + b;
        }else{
         s += "興趣：未選擇";
        }
        
        new AlertDialog.Builder(GDD01.this)
        .setTitle("結果")
        .setMessage(s)
        .setPositiveButton("離開", new DialogInterface.OnClickListener() {
   
   public void onClick(DialogInterface arg0, int arg1) {
    // TODO Auto-generated method stub
    
   }
  })
        .show();
      }
    });
  }
}