獲取正在運行的服務

手機上安裝的App，在后臺運行著很多不同功能的服務，最常見的例如消息推送相關的服務。如何查看這些服務？如何判斷某個服務是否正在運行？如何停止某一個服務呢？請看下面的方法：

package com.example.servicelistdemo;import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningServiceInfo;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ListView lv = (ListView) findViewById(R.id.lvService);List<String> serviceList = new ArrayList<String>();//獲取服務列表ActivityManager activityManager = (ActivityManager) this.getSystemService(Context.ACTIVITY_SERVICE);List<RunningServiceInfo> runningServicesList = activityManager.getRunningServices(Integer.MAX_VALUE);for(RunningServiceInfo si: runningServicesList){serviceList.add(si.service.getClassName());}ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, serviceList);lv.setAdapter(adapter);adapter.notifyDataSetChanged();}/*** 用來判斷服務是否運行.** @param ctx       Context* @param className 判斷的服務的名字 "com.xxx.xx..XXXService"* @return true 在運行, false 不在運行*/public static boolean isServiceRunning(Context ctx, String className) {boolean isRunning = false;ActivityManager manager = (ActivityManager) ctx.getSystemService(Context.ACTIVITY_SERVICE);List<RunningServiceInfo> servicesList = manager.getRunningServices(Integer.MAX_VALUE);Iterator<RunningServiceInfo> iterator = servicesList.iterator();while (iterator.hasNext()) {RunningServiceInfo service = (RunningServiceInfo) iterator.next();if (className.equals(service.service.getClassName())) {isRunning = true;}}return isRunning;}/*** 停止服務.** @param ctx       Context* @param className 服務的名字 * @return true 在運行, false 不在運行*/public static boolean stopRunningService(Context ctx, String className) {Intent intent_service = null;boolean ret = false;try {intent_service = new Intent(ctx, Class.forName(className));} catch (Exception e) {e.printStackTrace();}if (intent_service != null) {ret = ctx.stopService(intent_service);}return ret;}
}

代碼很好理解，就不詳細分析了，運行效果圖如下：