获取正在运行的服务
程序员文章站
2022-06-11 09:31:51
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手机上安装的App,在后台运行着很多不同功能的服务,最常见的例如消息推送相关的服务。如何查看这些服务?如何判断某个服务是否正在运行?如何停止某一个服务呢?请看下面的方法:
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 {
@Override
protected 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>();
//获取服务列表
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();
}
/**
* 用来判断服务是否运行.
*
* @param ctx Context
* @param className 判断的服务的名字 "com.xxx.xx..XXXService"
* @return true 在运行, false 不在运行
*/
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;
}
/**
* 停止服务.
*
* @param ctx Context
* @param className 服务的名字
* @return true 在运行, false 不在运行
*/
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;
}
}
代码很好理解,就不详细分析了,运行效果图如下: