一切都在标题中。是否可以在Service类中使用AsyncTask?
在官方文档中指出,Note that services, like other application objects, run in the main thread of their hosting process
和AsyncTask只有在UIThread中执行时才有效。
那么有可能在Service类中使用AsyncTask?
我想这样做,但我总是得到同样的错误
05-01 18:09:25.487: ERROR/JavaBinder(270): java.lang.ExceptionInInitializerError
...
05-01 18:09:25.487: ERROR/JavaBinder(270): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
我是不是做错了什么或者这只是不可能?
这里是我的服务类
package com.eip.core;
import android.app.Service;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
public class NetworkService extends Service {
private final INetwork.Stub mBinder = new INetwork.Stub() {
@Override
public int doConnect(String addr, int port) throws RemoteException {
new ConnectTask().execute("test42");
return 0;
}
};
@Override
public IBinder onBind(Intent arg0) {
return mBinder;
}
private class ConnectTask extends AsyncTask<String, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
Log.i("OnPreExecute()", "");
}
@Override
protected Void doInBackground(String... arg0) {
Log.i("doInBackground()", "");
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
Log.i("OnPostExecute()", "");
}
}
}
嗨,它没有违反线程规则,因为你的服务总是在UI线程上运行,直到你不从线程分叉线程 – user1530779 2015-02-05 04:18:34
因此,上面的代码将工作得很好,我想你在服务和意图服务之间感到困惑,意图服务默认在后台线程中运行 – user1530779 2015-02-05 04:26:54