android 获取设备中已启动的服务并判断某一服务是否启动

Bertha 。 2022-08-23 14:59 196阅读 0赞

下载链接:[http://download.csdn.net/detail/a123demi/7511823][http_download.csdn.net_detail_a123demi_7511823]

我们常常在开发的时候,通过获取系统已启动的服务来判断该服务器是否还需要再启动。

而本文将介绍android设备中已启动的服务,并判断某一服务是启动

1.根据ACTIVITY\_SERVICE获取系统服务

activityManager = (ActivityManager) getSystemService(ACTIVITY\_SERVICE);

2.获取系统中正在运行的服务

runningList = activityManager.getRunningServices(30);//代表我们希望返回的服务数目大小 30

效果图：

![Center][]

实例代码如下

1) activity\_main.xml

2).strings.xml

<?xml version="1.0" encoding="utf-8"?>
 <resources>
 
 <string name="app_name">AndroidServiceDemo</string>
 <string name="display_all_service">显示所有服务:</string>
 <string name="action_settings">Settings</string>
 <string name="get_all_service">获取所有服务</string>
 
 </resources>

3)MainActivity.java

package com.example.androidservicedemo;
 
 import java.util.List;
 
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.TextView;
 
 public class MainActivity extends Activity {
 	private TextView displayAllServiceTv;
 	private Button getAllServiceBtn;
 	private ActivityManager activityManager;
 	private List<ActivityManager.RunningServiceInfo> runningList;
 	private String myServiceClassName = "org.linphone.LinphoneService";
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		setContentView(R.layout.activity_main);
 
 		final String defaultStr = this.getResources().getString(R.string.display_all_service);
 		displayAllServiceTv = (TextView) this.findViewById(R.id.display_service_tv);
 		getAllServiceBtn = (Button) this.findViewById(R.id.service_btn);
 		
 		getAllServiceBtn.setOnClickListener(new OnClickListener(){
 
 			@Override
 			public void onClick(View arg0) {
 				// TODO Auto-generated method stub
 				StringBuffer displaySb = new StringBuffer();
 				displaySb.append(defaultStr).append("\n");
 				activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
 				runningList = activityManager.getRunningServices(30);//代表我们希望返回的服务数目大小 30
 				
 				displaySb.append(myServiceClassName).append(":").append(myServiceIsStart(runningList,myServiceClassName)).append("\n");
 				
 				displayAllServiceTv.setText(getAllService(runningList,displaySb).toString());
 				
 			}
 			
 		});
 	}
 	
 	private boolean myServiceIsStart(List<ActivityManager.RunningServiceInfo> runningList,String myServiceClassName){
 		boolean isStart = false;
 		for(ActivityManager.RunningServiceInfo runningService:runningList){
 			if(myServiceClassName.equals(runningService.service.getClassName())){
 				isStart = true;
 				break;
 			}
 		}
 		return isStart;
 	}
 	
 	private StringBuffer getAllService(List<ActivityManager.RunningServiceInfo> runningList,StringBuffer displaySb){
 		for(ActivityManager.RunningServiceInfo runningService:runningList){
 			displaySb.append(runningService.service.getClassName()).append("\n");
 		}
 		return displaySb;
 	}
 
 	@Override
 	public boolean onCreateOptionsMenu(Menu menu) {
 
 		// Inflate the menu; this adds items to the action bar if it is present.
 		getMenuInflater().inflate(R.menu.main, menu);
 		return true;
 	}
 
 	@Override
 	public boolean onOptionsItemSelected(MenuItem item) {
 		// Handle action bar item clicks here. The action bar will
 		// automatically handle clicks on the Home/Up button, so long
 		// as you specify a parent activity in AndroidManifest.xml.
 		int id = item.getItemId();
 		if (id == R.id.action_settings) {
 			return true;
 		}
 		return super.onOptionsItemSelected(item);
 	}
 
 }

[http_download.csdn.net_detail_a123demi_7511823]: http://download.csdn.net/detail/a123demi/7511823
[Center]: /images/20220823/3eb9c9469c774e04a5ddbc3541c167a0.png