问题就是service进程如何存活

import android.app.ActivityManager;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.IBinder;
import android.util.Log;

import java.util.List;

public class HeadPhoneService extends Service {

public HeadPhoneService() { } @Override public IBinder onBind(Intent intent) { // TODO: Return the communication channel to the service. throw new UnsupportedOperationException("Not yet implemented"); } @Override public void onCreate() { super.onCreate(); Log.e("xxxx","service start"); } @Override public int onStartCommand(Intent intent, int flags, int startId) { IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(Intent.ACTION_HEADSET_PLUG); registerReceiver(headsetReceiver, intentFilter); return super.onStartCommand(intent, flags, startId); } @Override public void onDestroy() { Intent service = new Intent(this, HeadPhoneService.class); this.startService(service); super.onDestroy(); } private BroadcastReceiver headsetReceiver=new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (Intent.ACTION_HEADSET_PLUG.equals(action)) { Log.e("xxxx","headsetchange"); if (intent.hasExtra("state")) { int state = intent.getIntExtra("state", 0); if (state == 1) { } else if(state == 0){ } Log.e("xxxx","headphone"+state); } } } };

}