Connection error management

app/src/main/java/it/danieleverducci/nextcloudmaps/activity/detail/GeofavoriteDetailActivity.java

@@ -113,17 +113,26 @@ public class GeofavoriteDetailActivity extends AppCompatActivity implements Loca
         call.enqueue(new Callback<Geofavorite>() {
             @Override
             public void onResponse(Call<Geofavorite> call, Response<Geofavorite> response) {
-                finish();
+                if (response.isSuccessful())
+                    finish();
+                else
+                    onGeofavoriteSaveFailed();
             }
 
             @Override
             public void onFailure(Call<Geofavorite> call, Throwable t) {
-                Toast.makeText(GeofavoriteDetailActivity.this, R.string.error_saving_geofavorite, Toast.LENGTH_SHORT).show();
+                onGeofavoriteSaveFailed();
                 Log.e(TAG, "Unable to update geofavorite: " + t.getMessage());
             }
         });
     }
 
+    private void onGeofavoriteSaveFailed() {
+        runOnUiThread(() ->
+            Toast.makeText(GeofavoriteDetailActivity.this, R.string.error_saving_geofavorite, Toast.LENGTH_SHORT).show()
+        );
+    }
+
     /**
      * Obtains the current location (requesting user's permission, if necessary)
      * and calls updateLocationField()

app/src/main/java/it/danieleverducci/nextcloudmaps/activity/main/MainActivity.java

@@ -22,6 +22,7 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.text.TextUtils;
+import android.util.Log;
 import android.widget.Toast;
 
 import androidx.appcompat.app.AlertDialog;
@@ -65,6 +66,8 @@ public class MainActivity extends AppCompatActivity implements MainView, OnSorti
     private static final int INTENT_ADD = 100;
     private static final int INTENT_EDIT = 200;
 
+    private static final String TAG = "MainActivity";
+
     private static final String NAVIGATION_KEY_ADD_GEOFAVORITE = "add";
     private static final String NAVIGATION_KEY_SHOW_ABOUT = "about";
     private static final String NAVIGATION_KEY_SWITCH_ACCOUNT = "switch_account";
@@ -292,7 +295,8 @@ public class MainActivity extends AppCompatActivity implements MainView, OnSorti
 
     @Override
     public void onErrorLoading(String message) {
-        Toast.makeText(MainActivity.this, message, Toast.LENGTH_LONG).show();
+        Toast.makeText(MainActivity.this, R.string.list_geofavorite_connection_error, Toast.LENGTH_LONG).show();
+        Log.e(TAG, "Unable to obtain geofavorites list: " + message);
     }
 
     @Override

app/src/main/java/it/danieleverducci/nextcloudmaps/activity/main/MainPresenter.java

@@ -50,6 +50,11 @@ public class MainPresenter {
                     view.hideLoading();
                     if (response.isSuccessful() && response.body() != null) {
                         view.onGetResult(response.body());
+                    } else {
+                        ((AppCompatActivity) view).runOnUiThread(() -> {
+                            view.hideLoading();
+                            view.onErrorLoading(response.raw().message());
+                        });
                     }
                 });
             }

app/src/main/res/values/strings.xml

@@ -38,6 +38,7 @@
     <string name="dialog_delete_delete">Delete</string>
     <string name="dialog_delete_cancel">Maintain</string>
     <string name="list_geofavorite_deleted">Geofavorite deleted</string>
+    <string name="list_geofavorite_connection_error">Unable to obtain geofavorites list</string>
 
     <!-- Sort dialog -->
     <string name="sort_by">Sort by</string>