Android 服务service里面出Toast

1. if(phoneIsInUse())  
2.                 {  
3.                     new Thread(new Runnable() {    
4.                         public void run() {    
5.                             Looper.prepare();    
6.                             Toast  
7.                             .makeText(  
8.                                     VuiService.this,  
9.                                     "请结束通话后再试", Toast.LENGTH_LONG).show();  
10.                             Looper.loop();    
11.                         }    
12.                     }).start();    
13.                     return ;  
14.                 }  

见于http://android.tgbus.com/Android/tutorial/201103/346538.shtml