Question

如何将String传递给doInBackground并将ArrayList返回到onPostExecute。我想要将html URL传递给Asyntask doInBackground和onPostExecute我想用UI做事。

我想尝试这样的事情

    new calc_stanica().execute("where we send URL as String");//

和AsynTask：

public class calc_stanica extends AsyncTask<String, Void, ArrayList<String>> {
    ProgressDialog dialog;

    @Override
    protected void onPreExecute() {           

    }

    protected ArrayList<String> doInBackground(ArrayList<String>... passing) {    

        // here i want to from  URL String pars data to ArrayList<String>          

        return ArrayList<String>;

    }

    protected void onPostExecute(ArrayList<String> result) {

    //    do with ArrayList<String>         

    }
}

Answer 1

public class calc_stanica extends AsyncTask<String, Void, ArrayList<String>> {
    ProgressDialog dialog;

    @Override
    protected void onPreExecute() {           

    }

    protected ArrayList<String> doInBackground(String... passing) {    
String URLStr=passing[0];//as you are passing 1 url only so this will work for u    
ArrayList<String> arraylist=new ArrayList<String>();
        // here u do the things u wana do and add the  String data to ArrayList<String>  and return         

        return arraylist;

    }

    protected void onPostExecute(ArrayList<String> result) {

    //    do with ArrayList<String>         

    }
}

如何将String传递给AsyncTask doInBackground，并将ArrayList <string>返回给onPostExecute

1 个答案: