Android判断后台Service服务是否运行，获取所有的服务

//本方法判断自己写的一个Service-->com.star.myService是否已经运行
public static boolean isServiceRunning()
{
ActivityManager myManager=(ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
ArrayList<RunningServiceInfo> runningService = (ArrayList<RunningServiceInfo>) myManager.getRunningServices(30);
for(int i = 0 ; i<runningService.size();i++)
{
if(runningService.get(i).service.getClassName().toString().equals("com.star.myService"))
{
return true;
}
}
return false;
}

//本方法判断服务是否已经运行
public static boolean isServiceRunning(String serviceName)
{
ActivityManager myManager=(ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
ArrayList<RunningServiceInfo> runningService = (ArrayList<RunningServiceInfo>) myManager.getRunningServices(30);
for(int i = 0 ; i<runningService.size();i++)
{
if(runningService.get(i).service.getClassName().toString().equals(serviceName))
{
return true;
}
}
return false;
}