logout optimization

app/src/main/java/awais/instagrabber/dialogs/SettingsDialog.java

@@ -185,11 +185,12 @@ public final class SettingsDialog extends BottomSheetDialogFragment implements V
         if (v == btnLogin) {
             startActivity(new Intent(v.getContext(), Login.class));
             somethingChanged = true;
+            this.dismiss();
         } else if (v == btnLogout) {
             Utils.setupCookies("LOGOUT");
-            settingsHelper.putString(Constants.COOKIE, null);
+            settingsHelper.putString(Constants.COOKIE, "");
+            somethingChanged = true;
             this.dismiss();
-            activity.recreate();
         } else if (v == btnImportExport) {
             if (ContextCompat.checkSelfPermission(activity, Utils.PERMS[0]) == PackageManager.PERMISSION_DENIED)
                 requestPermissions(Utils.PERMS, 6007);

app/src/main/java/awais/instagrabber/utils/Utils.java

@@ -123,12 +123,11 @@ public final class Utils {
     public static SimpleDateFormat datetimeParser;
 
     public static void setupCookies(final String cookieRaw) {
+        final CookieStore cookieStore = NET_COOKIE_MANAGER.getCookieStore();
         if (cookieRaw == "LOGOUT") {
-            final CookieStore cookieStore = NET_COOKIE_MANAGER.getCookieStore();
             cookieStore.removeAll();
         }
         else if (cookieRaw != null && !isEmpty(cookieRaw)) {
-            final CookieStore cookieStore = NET_COOKIE_MANAGER.getCookieStore();
             try {
                 final URI uri1 = new URI("https://instagram.com");
                 final URI uri2 = new URI("https://instagram.com/");