I have a service in which I have a AsyncTask
if (s != null) {
if (!MainActivity.photoListSend.isEmpty()) {
if (MainActivity.photoListSend.size() > 0) {
File file = MainActivity.photoListSend.get(0);
if (file.exists())
file.delete();
MainActivity.photoListSend.remove(0);
Gson gson = new Gson();
String jsonCurProduct = gson.toJson(MainActivity.photoListSend);
SharedPreferences sharedPref = getApplicationContext().getSharedPreferences("TAG", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString("TAG", jsonCurProduct);
editor.apply();
File imagesFolder = context.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
assert imagesFolder != null;
}
}
}
On this line :
String jsonCurProduct = gson.toJson(MainActivity.photoListSend);
I have java.util.ConcurrentModificationException
And this is my all class :
ublic class Sendrer extends Service {
public static boolean running = false;
private Timer timer = new Timer();
private SendPhotoTask asyncSender;
private Context context;
private SharedPreferences sp;
private SharedPreferences.Editor editor;
public static String convertStreamToString(java.io.InputStream is) {
java.util.Scanner s = new java.util.Scanner(is).useDelimiter("\\A");
return s.hasNext() ? s.next() : "";
}
@Override
public void onCreate() {
super.onCreate();
context = getApplicationContext();
sp = getSharedPreferences("pfref", Activity.MODE_PRIVATE);
editor = sp.edit();
Gson gson = new Gson();
List<File> productFromShared = new ArrayList<>();
SharedPreferences sharedPref = getApplicationContext().getSharedPreferences("TAG", Context.MODE_PRIVATE);
String jsonPreferences = sharedPref.getString("TAG", "");
Type type = new TypeToken<List<File>>() {
}.getType();
productFromShared = gson.fromJson(jsonPreferences, type);
MainActivity.photoListSend = null;
MainActivity.photoListSend = new ArrayList<>();
if (productFromShared != null)
MainActivity.photoListSend.addAll(productFromShared);
Log.e("tworzenie serwisu ", "tworzenie");
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.e("Dziełanie serwisu ", "Dziełanie");
if (!running) {
running = true;
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
asyncSender = new SendPhotoTask();
asyncSender.execute();
}
}, 1000 * 60 * 2);
}
return START_STICKY;
}
@Override
public void onDestroy() {
if (running) {
timer.cancel();
asyncSender = new SendPhotoTask();
asyncSender.cancel(true);
running = false;
}
Log.e("service ", "nie działa");
super.onDestroy();
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
public boolean isMyServiceRunning(Class<?> serviceClass) {
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceClass.getName().equals(service.service.getClassName())) {
return true;
}
}
return false;
}
class SendPhotoTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... strings) {
running = true;
if (MainActivity.photoListSend != null) {
if (!MainActivity.photoListSend.isEmpty())
if (NetworkUtil.isNetworkAvailable(context)) {
if (MainActivity.photoListSend.size() > 0) {
MainActivity.isSend = true;
running = true;
InputStream responseInputStream = null;
Log.e("start wysłania ", "start");
try {
if (MainActivity.photoListSend.get(0).isFile()) {
responseInputStream = HttpConnectionsUtil.sendPhotoRequest(getApplicationContext(), true, MainActivity.photoListSend.get(0).getName());
if (responseInputStream != null) {
String input = convertStreamToString(responseInputStream);
if (input.equals("empty"))
return "BAD";
else {
try {
int tt = ResponseParser.getType(input);
Log.e("TaG", tt + " ");
if (tt == 0) {
return null;
} else if (tt == -1) {
return null;
}
} catch (UnknownAnswerName e) {
e.printStackTrace();
return null;
}
}
}
} else {
return "BAD";
}
} catch (IOException e) {
e.printStackTrace();
return null;
}
// Log.e("Wysyłanie zdjęcia ", convertStreamToString(responseInputStream));
if (responseInputStream != null)
return convertStreamToString(responseInputStream);
}
}
}
return null;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
if (NetworkUtil.isNetworkAvailable(context)) {
if (sp.getBoolean("workOffLine", false)) {
editor.putBoolean("workOffLine", false);
editor.commit();
isConnect.setVisibility(View.VISIBLE);
imgIsSend.setVisibility(View.VISIBLE);
imgIsNet.setVisibility(View.GONE);
}
}
if (s != null) {
if (!MainActivity.photoListSend.isEmpty()) {
if (MainActivity.photoListSend.size() > 0) {
File file = MainActivity.photoListSend.get(0);
if (file.exists())
file.delete();
MainActivity.photoListSend.remove(0);
Gson gson = new Gson();
String jsonCurProduct = gson.toJson(MainActivity.photoListSend);
SharedPreferences sharedPref = getApplicationContext().getSharedPreferences("TAG", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString("TAG", jsonCurProduct);
editor.apply();
File imagesFolder = context.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
assert imagesFolder != null;
}
}
}
if (s == null) {
MainActivity.isSend = false;
}
if (!MainActivity.photoListSend.isEmpty()) {
if (NetworkUtil.isNetworkAvailable(context)) {
if (MainActivity.photoListSend.size() > 0) {
asyncSender = new SendPhotoTask();
asyncSender.execute();
Log.e("Wysyłanie kolejnego ", "zdjecia");
} else {
context.stopService(new Intent(context, Sendrer.class));
asyncSender.cancel(true);
context.startService(new Intent(context, Sendrer.class));
}
} else {
context.stopService(new Intent(context, Sendrer.class));
asyncSender.cancel(true);
context.startService(new Intent(context, Sendrer.class));
}
} else {
MainActivity.isSend = false;
context.stopService(new Intent(context, Sendrer.class));
asyncSender.cancel(true);
context.startService(new Intent(context, Sendrer.class));
}
running = false;
}
}
}
