1. private boolean isServiceStart() {  
2.     ActivityManager myManager = (ActivityManager) getApplicationContext()  
3.             .getSystemService(Context.ACTIVITY_SERVICE);  
4.     ArrayList<RunningServiceInfo> runningService = (ArrayList<RunningServiceInfo>) myManager  
5.             .getRunningServices(30);  
6.     for (int i = 0; i < runningService.size(); i++) {  
7.         if (runningService.get(i).service.getClassName().toString()  
8.                 .equals("com.**.**.YourService")) {  
9.             return true;  
10.         }  
11.     }  
12.     return false;  
13. } 

Android 判断Service是否已经运行