add settings for dynamic colors and dark theme

app/src/main/java/im/conversations/android/Conversations.java

@@ -1,8 +1,12 @@
 package im.conversations.android;
 
 import android.app.Application;
+import android.content.Context;
+import android.content.SharedPreferences;
 import androidx.appcompat.app.AppCompatDelegate;
+import androidx.preference.PreferenceManager;
 import com.google.android.material.color.DynamicColors;
+import com.google.android.material.color.DynamicColorsOptions;
 import im.conversations.android.dns.Resolver;
 import im.conversations.android.notification.Channels;
 import im.conversations.android.xmpp.ConnectionPool;
@@ -30,8 +34,53 @@ public class Conversations extends Application {
         channels.initialize();
         Resolver.init(this);
         ConnectionPool.getInstance(this).reconfigure();
-        AppCompatDelegate.setDefaultNightMode(
+        applyThemeSettings();
-                AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM); // For night mode theme
+    }
-        DynamicColors.applyToActivitiesIfAvailable(this);
+
+    public void applyThemeSettings() {
+        final var sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+        if (sharedPreferences == null) {
+            return;
+        }
+        applyThemeSettings(sharedPreferences);
+    }
+
+    private void applyThemeSettings(final SharedPreferences sharedPreferences) {
+        AppCompatDelegate.setDefaultNightMode(getDesiredNightMode(this, sharedPreferences));
+        var dynamicColorsOptions =
+                new DynamicColorsOptions.Builder()
+                        .setPrecondition((activity, t) -> isDynamicColorsDesired(activity))
+                        .build();
+        DynamicColors.applyToActivitiesIfAvailable(this, dynamicColorsOptions);
+    }
+
+    public static int getDesiredNightMode(final Context context) {
+        final var sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+        if (sharedPreferences == null) {
+            return AppCompatDelegate.getDefaultNightMode();
+        }
+        return getDesiredNightMode(context, sharedPreferences);
+    }
+
+    public static boolean isDynamicColorsDesired(final Context context) {
+        final var preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        return preferences.getBoolean("dynamic_colors", false);
+    }
+
+    private static int getDesiredNightMode(
+            final Context context, final SharedPreferences sharedPreferences) {
+        final String theme =
+                sharedPreferences.getString("theme", context.getString(R.string.theme));
+        return getDesiredNightMode(theme);
+    }
+
+    public static int getDesiredNightMode(final String theme) {
+        if ("automatic".equals(theme)) {
+            return AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM;
+        } else if ("light".equals(theme)) {
+            return AppCompatDelegate.MODE_NIGHT_NO;
+        } else {
+            return AppCompatDelegate.MODE_NIGHT_YES;
+        }
     }
 }

app/src/main/java/im/conversations/android/ui/Activities.java

@@ -13,11 +13,20 @@ public final class Activities {
 
     public static void setStatusAndNavigationBarColors(
             final AppCompatActivity activity, final View view) {
+        setStatusAndNavigationBarColors(activity, view, false);
+    }
+
+    public static void setStatusAndNavigationBarColors(
+            final AppCompatActivity activity, final View view, final boolean raisedStatusBar) {
         final var isLightMode = isLightMode(activity);
         final var window = activity.getWindow();
         final var flags = view.getSystemUiVisibility();
         // an elevation of 4 matches the MaterialToolbar elevation
+        if (raisedStatusBar) {
+            window.setStatusBarColor(SurfaceColors.SURFACE_5.getColor(activity));
+        } else {
             window.setStatusBarColor(SurfaceColors.SURFACE_0.getColor(activity));
+        }
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             window.setNavigationBarColor(SurfaceColors.SURFACE_1.getColor(activity));
             if (isLightMode) {

app/src/main/java/im/conversations/android/ui/activity/BaseActivity.java

@@ -0,0 +1,49 @@
+package im.conversations.android.ui.activity;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatDelegate;
+import im.conversations.android.Conversations;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public abstract class BaseActivity extends AppCompatActivity {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(BaseActivity.class);
+
+    private Boolean isDynamicColors;
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        final int desiredNightMode = Conversations.getDesiredNightMode(this);
+        if (setDesiredNightMode(desiredNightMode)) {
+            return;
+        }
+        final boolean isDynamicColors = Conversations.isDynamicColorsDesired(this);
+        setDynamicColors(isDynamicColors);
+    }
+
+    public void setDynamicColors(final boolean isDynamicColors) {
+        if (this.isDynamicColors == null) {
+            this.isDynamicColors = isDynamicColors;
+        } else {
+            if (this.isDynamicColors != isDynamicColors) {
+                LOGGER.info(
+                        "Recreating {} because dynamic color setting has changed",
+                        getClass().getSimpleName());
+                recreate();
+            }
+        }
+    }
+
+    public boolean setDesiredNightMode(final int desiredNightMode) {
+        if (desiredNightMode == AppCompatDelegate.getDefaultNightMode()) {
+            return false;
+        }
+        AppCompatDelegate.setDefaultNightMode(desiredNightMode);
+        LOGGER.info(
+                "Recreating {} because desired night mode has changed", getClass().getSimpleName());
+        recreate();
+        return true;
+    }
+}

app/src/main/java/im/conversations/android/ui/activity/MainActivity.java

@@ -1,14 +1,13 @@
 package im.conversations.android.ui.activity;
 
 import android.os.Bundle;
-import androidx.appcompat.app.AppCompatActivity;
 import androidx.databinding.DataBindingUtil;
 import im.conversations.android.R;
 import im.conversations.android.databinding.ActivityMainBinding;
 import im.conversations.android.service.ForegroundService;
 import im.conversations.android.ui.Activities;
 
-public class MainActivity extends AppCompatActivity {
+public class MainActivity extends BaseActivity {
 
     @Override
     protected void onCreate(final Bundle savedInstanceState) {

app/src/main/java/im/conversations/android/ui/activity/SettingsActivity.java

@@ -1,7 +1,6 @@
 package im.conversations.android.ui.activity;
 
 import android.os.Bundle;
-import androidx.appcompat.app.AppCompatActivity;
 import androidx.databinding.DataBindingUtil;
 import im.conversations.android.R;
 import im.conversations.android.databinding.ActivitySettingsBinding;
@@ -9,19 +8,32 @@ import im.conversations.android.service.ForegroundService;
 import im.conversations.android.ui.Activities;
 import im.conversations.android.ui.fragment.settings.MainSettingsFragment;
 
-public class SettingsActivity extends AppCompatActivity {
+public class SettingsActivity extends BaseActivity {
-
-    private ActivitySettingsBinding binding;
 
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         ForegroundService.start(this);
-        this.binding = DataBindingUtil.setContentView(this, R.layout.activity_settings);
+        final ActivitySettingsBinding binding =
-        Activities.setStatusAndNavigationBarColors(this, binding.getRoot());
+                DataBindingUtil.setContentView(this, R.layout.activity_settings);
-        getSupportFragmentManager()
+        setSupportActionBar(binding.materialToolbar);
+        Activities.setStatusAndNavigationBarColors(this, binding.getRoot(), true);
+
+        final var fragmentManager = getSupportFragmentManager();
+        final var currentFragment = fragmentManager.findFragmentById(R.id.fragment_container);
+        if (currentFragment == null) {
+            fragmentManager
                     .beginTransaction()
                     .replace(R.id.fragment_container, new MainSettingsFragment())
                     .commit();
         }
+        binding.materialToolbar.setNavigationOnClickListener(
+                view -> {
+                    if (fragmentManager.getBackStackEntryCount() == 0) {
+                        finish();
+                    } else {
+                        fragmentManager.popBackStack();
+                    }
+                });
+    }
 }

app/src/main/java/im/conversations/android/ui/activity/SetupActivity.java

@@ -2,7 +2,6 @@ package im.conversations.android.ui.activity;
 
 import android.content.Intent;
 import android.os.Bundle;
-import androidx.appcompat.app.AppCompatActivity;
 import androidx.databinding.DataBindingUtil;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.NavController;
@@ -16,7 +15,7 @@ import im.conversations.android.ui.model.SetupViewModel;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class SetupActivity extends AppCompatActivity {
+public class SetupActivity extends BaseActivity {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(SetupActivity.class);
 

app/src/main/java/im/conversations/android/ui/fragment/settings/InterfaceSettingsFragment.java

@@ -0,0 +1,54 @@
+package im.conversations.android.ui.fragment.settings;
+
+import android.os.Bundle;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceFragmentCompat;
+import im.conversations.android.Conversations;
+import im.conversations.android.R;
+import im.conversations.android.ui.activity.SettingsActivity;
+
+public class InterfaceSettingsFragment extends PreferenceFragmentCompat {
+
+    @Override
+    public void onCreatePreferences(@Nullable Bundle savedInstanceState, @Nullable String rootKey) {
+        setPreferencesFromResource(R.xml.preferences_interface, rootKey);
+        final var themePreference = findPreference("theme");
+        final var dynamicColors = findPreference("dynamic_colors");
+        if (themePreference != null) {
+            themePreference.setOnPreferenceChangeListener(
+                    (preference, newValue) -> {
+                        if (newValue instanceof String) {
+                            final String theme = (String) newValue;
+                            final int desiredNightMode = Conversations.getDesiredNightMode(theme);
+                            requireSettingsActivity().setDesiredNightMode(desiredNightMode);
+                        }
+                        return true;
+                    });
+        }
+        if (dynamicColors != null) {
+            dynamicColors.setOnPreferenceChangeListener(
+                    new Preference.OnPreferenceChangeListener() {
+                        @Override
+                        public boolean onPreferenceChange(
+                                @NonNull Preference preference, Object newValue) {
+                            requireSettingsActivity()
+                                    .setDynamicColors(Boolean.TRUE.equals(newValue));
+                            return true;
+                        }
+                    });
+        }
+    }
+
+    public SettingsActivity requireSettingsActivity() {
+        final var activity = requireActivity();
+        if (activity instanceof SettingsActivity) {
+            return (SettingsActivity) activity;
+        }
+        throw new IllegalStateException(
+                String.format(
+                        "%s is not %s",
+                        activity.getClass().getName(), SettingsActivity.class.getName()));
+    }
+}

app/src/main/res/drawable/ic_arrow_back_24dp.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M20,11H7.83l5.59,-5.59L12,4l-8,8 8,8 1.41,-1.41L7.83,13H20v-2z" />
+</vector>

app/src/main/res/drawable/ic_dark_mode_24dp.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M12,3c-4.97,0 -9,4.03 -9,9s4.03,9 9,9s9,-4.03 9,-9c0,-0.46 -0.04,-0.92 -0.1,-1.36c-0.98,1.37 -2.58,2.26 -4.4,2.26c-2.98,0 -5.4,-2.42 -5.4,-5.4c0,-1.81 0.89,-3.42 2.26,-4.4C12.92,3.04 12.46,3 12,3L12,3z" />
+</vector>

app/src/main/res/drawable/ic_touch_app_24dp.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M9,11.24V7.5C9,6.12 10.12,5 11.5,5S14,6.12 14,7.5v3.74c1.21,-0.81 2,-2.18 2,-3.74C16,5.01 13.99,3 11.5,3S7,5.01 7,7.5C7,9.06 7.79,10.43 9,11.24zM18.84,15.87l-4.54,-2.26c-0.17,-0.07 -0.35,-0.11 -0.54,-0.11H13v-6C13,6.67 12.33,6 11.5,6S10,6.67 10,7.5v10.74c-3.6,-0.76 -3.54,-0.75 -3.67,-0.75c-0.31,0 -0.59,0.13 -0.79,0.33l-0.79,0.8l4.94,4.94C9.96,23.83 10.34,24 10.75,24h6.79c0.75,0 1.33,-0.55 1.44,-1.28l0.75,-5.27c0.01,-0.07 0.02,-0.14 0.02,-0.2C19.75,16.63 19.37,16.09 18.84,15.87z" />
+</vector>

app/src/main/res/layout/activity_settings.xml

@@ -25,13 +25,14 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             app:liftOnScroll="false"
-            app:elevation="0dp">
+            app:elevation="4dp">
 
             <com.google.android.material.appbar.MaterialToolbar
                 android:id="@+id/material_toolbar"
                 android:layout_width="match_parent"
                 android:layout_height="?attr/actionBarSize"
-                app:title="@string/title_activity_settings"/>
+                app:title="@string/title_activity_settings"
+                app:navigationIcon="@drawable/ic_arrow_back_24dp"/>
         </com.google.android.material.appbar.AppBarLayout>
         <androidx.fragment.app.FragmentContainerView
             android:fillViewport="true"

app/src/main/res/values-v29/theme-settings.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:tools="http://schemas.android.com/tools">
+
+    <string name="theme">automatic</string>
+    <string-array name="themes" tools:ignore="InconsistentArrays">
+        <item>@string/pref_theme_automatic</item>
+        <item>@string/pref_theme_light</item>
+        <item>@string/pref_theme_dark</item>
+    </string-array>
+    <string-array name="themes_values" tools:ignore="InconsistentArrays">
+        <item>automatic</item>
+		<item>light</item>
+		<item>dark</item>
+	</string-array>
+
+</resources>

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

@@ -1017,10 +1017,14 @@
     <string name="accounts">Accounts</string>
     <string name="spaces">Spaces</string>
     <string name="chats">Chats</string>
-    <string name="pref_title_appearance">Appearance</string>
+    <string name="pref_title_interface">Interface</string>
     <string name="pref_summary_appearance"><![CDATA[Theme & Colors]]></string>
     <string name="pref_title_security">Security</string>
     <string name="pref_summary_security">Encryption, Blind Trust Before Verification, MIM Detection</string>
     <string name="unified_push_summary">Notification relay for UnifiedPush compatible third party apps</string>
+    <string name="pref_dynamic_colors">Dynamic colors</string>
+    <string name="pref_dynamic_colors_summary">System colors (Material You)</string>
+    <string name="pref_light_dark_mode">Light/dark mode</string>
+    <string name="appearance">Appearance</string>
 
 </resources>

app/src/main/res/values/theme-settings.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="theme">light</string>
+    <string-array name="themes">
+        <item>@string/pref_theme_light</item>
+        <item>@string/pref_theme_dark</item>
+    </string-array>
+    <string-array name="themes_values">
+		<item>light</item>
+		<item>dark</item>
+	</string-array>
+
+</resources>

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

@@ -27,6 +27,5 @@
         <item name="colorOnSurfaceInverse">@color/md_theme_light_inverseOnSurface</item>
         <item name="colorSurfaceInverse">@color/md_theme_light_inverseSurface</item>
         <item name="colorPrimaryInverse">@color/md_theme_light_inversePrimary</item>
-        <item name="android:statusBarColor">?colorSurface</item>
     </style>
 </resources>

app/src/main/res/xml/preferences_interface.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <PreferenceCategory android:title="@string/appearance">
+    <SwitchPreferenceCompat
+        android:icon="@drawable/ic_palette_24dp"
+        android:key="dynamic_colors"
+        android:title="@string/pref_dynamic_colors"
+        android:summary="@string/pref_dynamic_colors_summary"/>
+    <ListPreference
+        android:defaultValue="@string/theme"
+        android:entries="@array/themes"
+        android:entryValues="@array/themes_values"
+        android:icon="@drawable/ic_dark_mode_24dp"
+        android:key="theme"
+        android:title="@string/pref_light_dark_mode"
+        app:useSimpleSummaryProvider="true" />
+    </PreferenceCategory>
+</PreferenceScreen>

app/src/main/res/xml/preferences_main.xml

@@ -2,10 +2,10 @@
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
     <Preference
-        app:title="@string/pref_title_appearance"
+        app:title="@string/pref_title_interface"
         app:summary="@string/pref_summary_appearance"
-        android:icon="@drawable/ic_palette_24dp"
+        android:icon="@drawable/ic_touch_app_24dp"
-        app:fragment="im.conversations.android.ui.fragment.MainSettingsFragment"/>
+        app:fragment="im.conversations.android.ui.fragment.settings.InterfaceSettingsFragment"/>
     <Preference
         app:title="@string/pref_title_security"
         app:summary="@string/pref_summary_security"