AsyncTask的：从doInBackground传递两个或多个值onPostExecute [英] Asynctask: pass two or more values from doInBackground to onPostExecute

问题描述

我有一个AsyncTask的以检索两个int vaules，我想通过他们onPostExecute展示他们的看法。结果
这里是我的code：

I have an Asynctask which retrieves two int vaules and i want to pass them to onPostExecute to show them on the view.
Here is my code:

    public class QueryServer extends AsyncTask <String, Void, Integer> { 

    protected Integer doInBackground(String... serverAddress) {
        Log.d("QueryServer", ""+serverAddress[0]);
        MCQuery mcQuery = new MCQuery("" + serverAddress[0] ,25565);
        QueryResponse response = mcQuery.basicStat();

        int Onlineplayers = response.getOnlinePlayers(); //first vaule
        int Maxplayers = response.getMaxPlayers();  //second vaule

        Log.d("MCQuery", "" + Onlineplayers + " OnlinePlayers");
        return Onlineplayers;

    }

    protected void onPostExecute(Integer Onlineplayers){

        TextView onlinePlayersView = (TextView) findViewById(R.id.online_players);

        onlinePlayersView.setText(""+Onlineplayers+"/"+ Maxplayers); //i need to pass Maxplayers to use it here


    }

感谢您提前。

推荐答案

您可以定义包含两个整数包装类：

You can define a Wrapper class that holds two integers:

public class Wrapper
{
    public int onlinePlayers;
    public int maxPlayers;
}

和在整数的使用它：

public class QueryServer extends AsyncTask<String, Void, Wrapper> { 

    protected Wrapper doInBackground(String... serverAddress) {
        Log.d("QueryServer", ""+serverAddress[0]);
        MCQuery mcQuery = new MCQuery("" + serverAddress[0] ,25565);
        QueryResponse response = mcQuery.basicStat();

        int onlinePlayers = response.getOnlinePlayers(); //first vaule
        int maxPlayers = response.getMaxPlayers();  //second vaule

        Log.d("MCQuery", "" + onlinePlayers + " onlinePlayers");
        Wrapper w = new Wrapper();
        w.onlinePlayers = onlinePlayers;
        w.maxPlayers = maxPlayers;
        return w;

    }

    protected void onPostExecute(Wrapper w){

        TextView onlinePlayersView = (TextView) findViewById(R.id.online_players);

        onlinePlayersView.setText(""+w.onlinePlayers+"/"+ w.maxPlayers); //i need to pass Maxplayers to use it here


    }

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