Ask restart when theme is changed

app/src/main/java/app/fedilab/android/activities/SettingsActivity.kt

@@ -16,15 +16,18 @@ package app.fedilab.android.activities
 
 import android.os.Bundle
 import android.view.MenuItem
+import androidx.appcompat.app.AlertDialog
 import androidx.navigation.findNavController
 import androidx.navigation.ui.AppBarConfiguration
 import androidx.navigation.ui.navigateUp
 import androidx.navigation.ui.setupActionBarWithNavController
 import app.fedilab.android.R
 import app.fedilab.android.databinding.ActivitySettingsBinding
+import app.fedilab.android.helper.Helper
 import app.fedilab.android.helper.ThemeHelper
+import app.fedilab.android.ui.fragment.settings.FragmentThemingSettings
 
-class SettingsActivity : BaseActivity() {
+class SettingsActivity : BaseActivity(), FragmentThemingSettings.ActionTheming {
     private lateinit var binding: ActivitySettingsBinding
     private lateinit var appBarConfiguration: AppBarConfiguration
 
@@ -34,7 +37,6 @@ class SettingsActivity : BaseActivity() {
 
         binding = ActivitySettingsBinding.inflate(layoutInflater)
         setContentView(binding.root)
-
         val navController = findNavController(R.id.fragment_container)
         appBarConfiguration = AppBarConfiguration.Builder().build()
         setupActionBarWithNavController(navController, appBarConfiguration)
@@ -53,4 +55,16 @@ class SettingsActivity : BaseActivity() {
         }
         return super.onOptionsItemSelected(item)
     }
+
+    override fun restart() {
+        val restartBuilder = AlertDialog.Builder(this, Helper.dialogStyle())
+        restartBuilder.setTitle(getString(R.string.restart_the_app))
+        restartBuilder.setMessage(getString(R.string.restart_the_app_theme))
+        restartBuilder.setNegativeButton(R.string.no) { dialog, which -> dialog.dismiss() }
+        restartBuilder.setPositiveButton(R.string.restart) { dialog, which ->
+            dialog.dismiss()
+            Helper.restart(this)
+        }
+        restartBuilder.create().show()
+    }
 }

app/src/main/java/app/fedilab/android/ui/fragment/settings/FragmentThemingSettings.java

@@ -63,6 +63,7 @@ import java.util.List;
 
 import app.fedilab.android.R;
 import app.fedilab.android.activities.ComposeActivity;
+import app.fedilab.android.activities.SettingsActivity;
 import app.fedilab.android.databinding.PopupStatusThemeBinding;
 import app.fedilab.android.helper.Helper;
 import app.fedilab.android.helper.ThemeHelper;
@@ -75,6 +76,8 @@ public class FragmentThemingSettings extends PreferenceFragmentCompat implements
     private List<LinkedHashMap<String, String>> listOfThemes;
     private SharedPreferences appPref;
     private SharedPreferences cyneaPref;
+    public ActionTheming actionTheming;
+    private boolean shouldRestart;
 
     @Override
     public void onCreatePreferences(Bundle bundle, String s) {
@@ -82,6 +85,8 @@ public class FragmentThemingSettings extends PreferenceFragmentCompat implements
         appPref = PreferenceManager.getDefaultSharedPreferences(requireActivity());
         createPref();
         listOfThemes = ThemeHelper.getContributorsTheme(requireActivity());
+        shouldRestart = false;
+        actionTheming = (SettingsActivity) requireActivity();
     }
 
 
@@ -101,6 +106,9 @@ public class FragmentThemingSettings extends PreferenceFragmentCompat implements
             getPreferenceScreen().getSharedPreferences()
                     .unregisterOnSharedPreferenceChangeListener(this);
         }
+        if (shouldRestart && actionTheming != null) {
+            actionTheming.restart();
+        }
     }
 
     @Override
@@ -109,9 +117,14 @@ public class FragmentThemingSettings extends PreferenceFragmentCompat implements
         if (key.equals("use_custom_theme")) {
             createPref();
         }
+        shouldRestart = true;
         Helper.recreateMainActivity(requireActivity());
     }
 
+    public interface ActionTheming {
+        void restart();
+    }
+
 
     @SuppressWarnings("deprecation")
     @SuppressLint("ApplySharedPref")

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

@@ -1599,4 +1599,5 @@
     <string name="state">State</string>
     <string name="restart_the_app">Restart the app?</string>
     <string name="restart">Restart</string>
+    <string name="restart_the_app_theme">You should restart the application to apply changes.</string>
 </resources>