I have been working on an app that utilizes JSON data. The issue I am facing is that when I retrieve the JSON using HentData.execute() and assign it to a string variable, my program crashes when I try to perform any operations with it.
HentData extends AsyncTask, so I am confident that it provides me with a valid JSON string.
Within the onCreate() method:
new HentData().execute();
jsonToArray();
arrayToText();
This sequence of actions results in a crash.
However, if I execute them like this, everything works fine. Could it be related to closing the HentData class properly?
protected void onPostExecute(String resultat){
json_string = resultat;
jsonToArray();
arrayToText();
}
This is the doInBackground() method:
protected String doInBackground(Void... voids){
try {
URL url = new URL(json_url);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
InputStream IS = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(IS));
StringBuilder sb = new StringBuilder();
while((json_string = bufferedReader.readLine())!=null){
sb.append(json_string+"\n");
}
bufferedReader.close();
IS.close();
httpURLConnection.disconnect();
return sb.toString().trim();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}