判断一个服务是否处于开启状态

import java.util.List;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningServiceInfo;
import android.content.Context;


public class ServiceStatusUtils {


/**
* 
* 判断一个服务是否处于开启状态
* 
* @param context
*            上下文
* @param serviceClassname
*            服务的完整类名称
* @return
*/
public static boolean isServiceRunning(Context context,
String serviceClassname) {
ActivityManager am = (ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningServiceInfo> infos = am.getRunningServices(100);
for (RunningServiceInfo info : infos) {
String serviceName = info.service.getClassName();
if (serviceClassname.equals(serviceName)) {
return true;
}
}
return false;
}
}