Fix #1254 🐞 Change grid view option not always applied directly

Signed-off-by: Stefan Niedermann <info@niedermann.it>

3 files changed, 22 insertions, 12 deletions

diff --git a/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesActivity.java b/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesActivity.java
index f872aac3..2dcd99ec 100644
--- a/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesActivity.java
+++ b/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesActivity.java
@@ -3,28 +3,28 @@ package it.niedermann.owncloud.notes.preferences;
 import android.os.Bundle;
 
 import androidx.annotation.Nullable;
+import androidx.lifecycle.ViewModelProvider;
 
 import it.niedermann.owncloud.notes.LockedActivity;
 import it.niedermann.owncloud.notes.R;
 import it.niedermann.owncloud.notes.databinding.ActivityPreferencesBinding;
 
-/**
- * Allows to change application settings.
- */
-
 public class PreferencesActivity extends LockedActivity {
 
+    private PreferencesViewModel viewModel;
     private ActivityPreferencesBinding binding;
 
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        viewModel = new ViewModelProvider(this).get(PreferencesViewModel.class);
+        viewModel.resultCode$.observe(this, this::setResult);
+
         binding = ActivityPreferencesBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
 
         setSupportActionBar(binding.toolbar);
-        setResult(RESULT_CANCELED);
         getSupportFragmentManager().beginTransaction()
                 .replace(R.id.fragment_container_view, new PreferencesFragment())
                 .commit();
diff --git a/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesFragment.java b/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesFragment.java
index e67aab4e..a38fd56c 100644
--- a/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesFragment.java
+++ b/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesFragment.java
@@ -8,6 +8,7 @@ import android.util.Log;
 import androidx.annotation.ColorInt;
 import androidx.annotation.Nullable;
 import androidx.core.app.ActivityCompat;
+import androidx.lifecycle.ViewModelProvider;
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceFragmentCompat;
@@ -24,6 +25,8 @@ public class PreferencesFragment extends PreferenceFragmentCompat implements Bra
 
     private static final String TAG = PreferencesFragment.class.getSimpleName();
 
+    private PreferencesViewModel viewModel;
+
     private BrandedSwitchPreference fontPref;
     private BrandedSwitchPreference lockPref;
     private BrandedSwitchPreference wifiOnlyPref;
@@ -32,14 +35,11 @@ public class PreferencesFragment extends PreferenceFragmentCompat implements Bra
     private BrandedSwitchPreference backgroundSyncPref;
 
     @Override
-    public void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-    }
-
-    @Override
     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
         addPreferencesFromResource(R.xml.preferences);
 
+        viewModel = new ViewModelProvider(requireActivity()).get(PreferencesViewModel.class);
+
         fontPref = findPreference(getString(R.string.pref_key_font));
 
         gridViewPref = findPreference(getString(R.string.pref_key_gridview));
@@ -47,7 +47,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat implements Bra
             gridViewPref.setOnPreferenceChangeListener((Preference preference, Object newValue) -> {
                 final Boolean gridView = (Boolean) newValue;
                 Log.v(TAG, "gridView: " + gridView);
-                requireActivity().setResult(Activity.RESULT_OK);
+                viewModel.resultCode$.setValue(Activity.RESULT_OK);
                 NotesApplication.updateGridViewEnabled(gridView);
                 return true;
             });
@@ -78,7 +78,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat implements Bra
         assert themePref != null;
         themePref.setOnPreferenceChangeListener((preference, newValue) -> {
             NotesApplication.setAppTheme(DarkModeSetting.valueOf((String) newValue));
-            requireActivity().setResult(Activity.RESULT_OK);
+            viewModel.resultCode$.setValue(Activity.RESULT_OK);
             ActivityCompat.recreate(requireActivity());
             return true;
         });
@@ -114,6 +114,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat implements Bra
     /**
      * Change color for backgroundSyncPref as well
      * https://github.com/stefan-niedermann/nextcloud-deck/issues/531
+     *
      * @param mainColor color of main brand
      * @param textColor color of text
      */
diff --git a/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesViewModel.java b/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesViewModel.java
new file mode 100644
index 00000000..dfde6c92
--- /dev/null
+++ b/app/src/main/java/it/niedermann/owncloud/notes/preferences/PreferencesViewModel.java
@@ -0,0 +1,9 @@
+package it.niedermann.owncloud.notes.preferences;
+
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class PreferencesViewModel extends ViewModel {
+
+    public final MutableLiveData<Integer> resultCode$ = new MutableLiveData<>();
+}