Question

我从我的活动的onCreate方法调用异步任务，在异步中我正在解析子数组。我想用我得到的字符串更新我的活动的textView。这是我的代码

public VerifyAnswerAsync(Context context, int userId){
    this.context = context;
    this.userId = userId;
}
@Override
protected String doInBackground(String... params) {
    try {
        url = new URL("URL");
        urlConnection = url.openConnection();

        inputStream = urlConnection.getInputStream();
        bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
        stringBuilder = new StringBuilder();
        line = "";

        while((line = bufferedReader.readLine())!=null){
            stringBuilder.append(line);
        }
        inputStream.close();
        result = stringBuilder.toString();
        Log.d("TAG",result);

        jsonArray = new JSONArray(result);
        for(int i = 0; i<jsonArray.length();i++){
            jsonObject = jsonArray.getJSONObject(i);
             que1 = jsonObject.optString("que1");
             ans1 = jsonObject.optString("ans1");


            que2 = jsonObject.optString("que2");
             ans2 = jsonObject.optString("ans2");
            Log.d("Tag",que1);
            Log.d("Tag",ans1);
            Log.d("Tag",que2);
            Log.d("Tag",ans2);
        }


    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (JSONException e) {
        e.printStackTrace();
    }
    this.publishProgress(que1,que2,ans1,ans2);
    return result;
}

如何从异步任务更新活动中的文本视图。请帮助。

我尝试从postExecute执行此操作，但textView为nil。

Answer 1

覆盖onPostExecute对象上AsyncTask来电setText(String text)的{{1}}回调。

如何从外部异步任务设置textView

1 个答案: