android - 如何停止 AsyncTask 类中的 Activity

Question

I tried to put finish() method to stop back stack.but it gave syntax error to me.how can I stop back stack.Thanks in advance.

 private class getNewMessages extends AsyncTask<ApiConnector, Long, JSONArray> {


            @Override
            protected JSONArray doInBackground(ApiConnector... params) {
                try {
                    JSONArray array = params[0].getMessage(name, password);
                    // String [] array=new String[10];

                    if (array.length() > 0) {
                        Intent nextScreen = new Intent(getApplicationContext(), bussiness.class);
                        nextScreen.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |Intent.FLAG_ACTIVITY_NEW_TASK);
                        startActivity(nextScreen);

                    }
                }catch (Exception e)
                {
                    Toast.makeText(getApplicationContext(),"Wrong Credintials", Toast.LENGTH_SHORT).show();
                }
                return null;
            }

            @Override
            protected void onPostExecute(JSONArray result) {


            }


        }

Answer 1

将代码转移到 onPostExecute 回调

     @Override
        protected void onPostExecute(JSONArray result) {
           if (result.length() > 0) {
                    Intent nextScreen = new Intent(getApplicationContext(), bussiness.class);
                    nextScreen.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK |Intent.FLAG_ACTIVITY_NEW_TASK);
                    startActivity(nextScreen);
                }

        }