Service 中的 onStart 和 onStartCommand

在自定义的service中,写了onStart和onStartCommand,

public class HttpWebService extends Service {

@Override
public void onCreate() {
super.onCreate();

....

@Override
    public void onStart(Intent intent, int startId) {
        // this will trigger AbstractBackgroundService.onStart()
        super.onStart(intent, startId);
        Log.d(LOG_TAG, "onStart" + intent); 
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        int retVal = super.onStartCommand(intent, flags, startId);
        Log.d(LOG_TAG, "onStartCommand" + intent);
 
        return retVal;
    }


}

如果用 bindService 这种方式调用,onStart和onStartCommand都不会被调用到

  this.bindService(new Intent(this, HttpWebService.class),
         new ServiceConnection() {
        
         @Override
         public void onServiceConnected(ComponentName name,
         IBinder service) {
        HttpWebService webService = ((HttpWebService.LocalBinder) service)
         .getService();
         webService.SetServerListener(webListener);
         }
        
         @Override
         public void onServiceDisconnected(ComponentName name) {
        
         }
         }, Context.BIND_AUTO_CREATE);

如果是用StartService调用,两个都被调用到

Intent intent = new Intent("com.example.sharefiles.services.ShareServices.Test");
        intent.setClass(getApplicationContext(), HttpWebService.class);            
        intent.putExtra("enable", true);
    
        this.startService(intent);

查看google 文档

http://developer.android.com/reference/android/app/Service.html 

onStart(Intent intent, int startId)

This method was deprecated in API level 5. Implement onStartCommand(Intent, int, int) instead.

onStartCommand(Intent intent, int flags, int startId)

Called by the system every time a client explicitly starts the service by calling startService(Intent), providing the arguments it supplied and a unique integer token representing the start request.

鉴于目前的代码基本都是运行在API5 以上的,所以直接干掉onStart.

原文地址:https://www.cnblogs.com/xiaokang088/p/4191814.html