页面上有多个Button的代码

 1 public class Sudoku extends Activity implements OnClickListener{
 2     /** Called when the activity is first created. */
 3     @Override
 4     public void onCreate(Bundle savedInstanceState) {
 5         setContentView(R.layout.main);
 6      super.onCreate(savedInstanceState);      
 7                
 8         View continueButton=this.findViewById(R.id.continue_button);
 9         continueButton.setOnClickListener(this);
10         View newButton =this.findViewById(R.id.new_button);
11         newButton.setOnClickListener(this);
12         View aboutButton=this.findViewById(R.id.about_button);
13         aboutButton.setOnClickListener(this);
14         View exitButton=this.findViewById(R.id.exit_button);
15         exitButton.setOnClickListener(this);
16               
17     }  
18     public void onClick(View v)
19     {
20      switch(v.getId()){
21      case R.id.about_button:
22       Intent i=new Intent(this,About.class);
23       startActivity(i);

 1 public class IntentSelectActivity extends Activity implements View.OnClickListener{  
 2     /** Called when the activity is first created. */  
 3     @Override  
 4     public void onCreate(Bundle savedInstanceState) {  
 5         super.onCreate(savedInstanceState);  
 6         setContentView(R.layout.main);  
 7           
 8         Button button1 = (Button)findViewById(R.id.btn1);  
 9         Button button2 = (Button)findViewById(R.id.btn2);  
10         Button button3 = (Button)findViewById(R.id.btn3);  
11         button1.setOnClickListener(this);  
12         button1.setTag(1);  
13         button2.setOnClickListener(this);  
14         button2.setTag(2);  
15         button3.setOnClickListener(this);  
16         button3.setTag(3);  
17           
18   
19     }  
20     public void onClick(View v){  
21         int tag = (Integer) v.getTag();  
22         switch(tag){  
23         case 1:  
24             Intent music = new Intent(Intent.ACTION_GET_CONTENT);  
25             music.setType("audio/*");  
26             startActivity(Intent.createChooser(music, "Select music"));  
27             break;  
28         case 2:  
29             Intent dial = new Intent();  
30             dial.setAction("android.intent.action.CALL");  
31             dial.setData(Uri.parse("tel:13428720000"));  
32             startActivity(dial);  
33             break;  
34         case 3:  
35             Intent wallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);  
36             startActivity(Intent.createChooser(wallpaper, "Select Wallpaper"));  
37             break;  
38         default :  
39             break;  
40         }  
41   
42     }  
43 }