android 判断service是否开启

引用：http://blog.csdn.net/ihrthk/article/details/7316389

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package com.tutor.runningservice;

import java.util.List;
import android.app.Activity;
import android.app.ActivityManager;
import android.os.Bundle;
import android.widget.TextView;

public class RunningService extends Activity {

/** Called when the activity is first created. */

@Override
public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

//setContentView(R.layout.main);
TextView mTextView = new TextView(this);

ActivityManager mActivityManager = (ActivityManager)getSystemService(ACTIVITY_SERVICE);

List<ActivityManager.RunningServiceInfo> mServiceList = mActivityManager.getRunningServices(30);

//我要判断的服务名字，我在launcher2里加了一个音乐服务
final String musicClassName = "com.android.launcher2.MusicService";

boolean b = MusicServiceIsStart(mServiceList, musicClassName);

mTextView.setText("你要判断的服务状态为: " +b+"\n" + getServiceClassName(mServiceList));

setContentView(mTextView);

}

//通过Service的类名来判断是否启动某个服务
private boolean MusicServiceIsStart(List<ActivityManager.RunningServiceInfo> mServiceList,String className){

for(int i = 0; i < mServiceList.size(); i ++)

{

if(className.equals(mServiceList.get(i).service.getClassName()))

{
return true;
}

}

return false;

}

//获取所有启动的服务的类名
private String getServiceClassName(List<ActivityManager.RunningServiceInfo> mServiceList){
String res = "";

for(int i = 0; i < mServiceList.size(); i ++){

res+=mServiceList.get(i).service.getClassName()+ " \n";

}

return res;

}
}