在Android中 获取正在运行的Service 实例

public class servicelist extends activity {

	@override
	protected void oncreate(bundle savedinstancestate) {
		super.oncreate(savedinstancestate);

		textview tv = new textview(this);

		activitymanager activitymanger = (activitymanager) getsystemservice(activity_service);// 获取activity管理器
		list<activitymanager.runningserviceinfo> servicelist = activitymanger.getrunningservices(30);// 从窗口管理器中获取正在运行的service
		tv.settext(getservicesname(servicelist));

		setcontentview(tv);
	}

	private boolean serviceisstart(list<activitymanager.runningserviceinfo> list, string classname) {// 判断某个服务是否启动
		for (int i = 0; i < list.size(); i++) {
			if (classname.equals(list.get(i).service.getclassname()))
				return true;
		}
		return false;
	}

	private string getservicesname(list<activitymanager.runningserviceinfo> list) {// 获取所有服务的名称
		string res = "";
		for (int i = 0; i < list.size(); i++) {
			res += list.get(i).service.getclassname() + "/n";
		}
		return res;
	}
}