Question

I’m using this AsyncTask for calling the skype page https://login.skype.com/json/validator?new_username=username for understand if a certain skype contact already exsists.

public class SkypeValidateUserTask extends AsyncTask<String, Void, String>{

protected String doInBackground(String...urls){
    String response = "";
    for(String url:urls){
        DefaultHttpClient client = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(url);
        try{
            HttpResponse execute = client.execute(httpGet);
            InputStream content = execute.getEntity().getContent();

            BufferedReader buffer = new BufferedReader(new InputStreamReader(content));

            String s="";
            while((s=buffer.readLine()) != null){
                response+=s;
            }
        }catch(Exception ex){
            ex.printStackTrace();
        }
    }
    return response;
}

public void onPostExecute(String result){
    String status="";
    try{    
        JSONObject obj=new JSONObject(result);
        status=obj.getString("status");
    }catch(Exception ex){
        ex.printStackTrace();
    }
    //Log.i("RISULTATO: ","STATO: "+status);

}
}

The main activity call this task for getting skype validation user result. The code is:

String skype = "name.surname.example";  

if(!skype.equalsIgnoreCase("")){
            // check if the skype contact exists
            SkypeValidateUserTask task = new SkypeValidateUserTask();
            task.execute(new String[] {"https://login.skype.com/json/validator?new_username="+skype});  

                // here I need to obtain the result of the thread

        }

My problems are:

1. I need to get the result of the task (the String status) in the main activity.

2. After the task.execute call, the next code in main activity is executed without wait for result returned from asynctask.

Answer 1

It is dengerious to use get() method to get the result from async task because It blocks the UI Thread.
use This Thread where I provided a reusable solutionCallback mechanism to get result from async thread without blocking UI Thread

I have implemented that with the help of lapslaz

public JsonData(YourActivityClass activity) 
{
    this.activity=activity;
    mProgressDialog = new ProgressDialog(activity);

}
protected void onPostExecute(String jsondata) {
    if (mProgressDialog != null || mProgressDialog.isShowing()){
        mProgressDialog.dismiss();
    }
    if(jsondata!=null) {
        activity.yourcallback(jsondata)
    }

}

And define the yourcallback() in YourActivityClass

private void yourcallback(String data) {
    jsonRecordsData=data;
    showRecordsFromJson();

}