From 0ddd535ec77a64cc27c3348202655c5f3dd8b0d9 Mon Sep 17 00:00:00 2001
From: Dennis Guse <dennis.guse@alumni.tu-berlin.de>
Date: Sun, 8 Oct 2023 22:51:39 +0200
Subject: [PATCH] Android12+: use user-defined DynamicColors.

---
 .../java/de/dennisguse/opentracks/Startup.java     | 14 +++++++++-----
 .../opentracks/settings/PreferencesUtils.java      |  5 +++++
 .../settings/UserInterfaceSettingsFragment.java    |  4 ++++
 src/main/res/values/settings.xml                   |  3 +++
 src/main/res/values/strings.xml                    |  2 ++
 src/main/res/xml/settings_user_interface.xml       |  6 ++++++
 6 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/src/main/java/de/dennisguse/opentracks/Startup.java b/src/main/java/de/dennisguse/opentracks/Startup.java
index 052b752f0a..a1c1b623d3 100644
--- a/src/main/java/de/dennisguse/opentracks/Startup.java
+++ b/src/main/java/de/dennisguse/opentracks/Startup.java
@@ -7,6 +7,8 @@
 import android.os.StrictMode;
 import android.util.Log;
 
+import com.google.android.material.color.DynamicColors;
+
 import java.lang.reflect.Method;
 
 import de.dennisguse.opentracks.settings.PreferencesUtils;
@@ -28,6 +30,11 @@ public void onCreate() {
 
         // Include version information into stack traces.
         Log.i(TAG, BuildConfig.APPLICATION_ID + "; BuildType: " + BuildConfig.BUILD_TYPE + "; VersionName: " + BuildConfig.VERSION_NAME + "/" + BuildConfig.VERSION_NAME_FULL + " VersionCode: " + BuildConfig.VERSION_CODE);
+        // In debug builds: show thread and VM warnings.
+        if (BuildConfig.DEBUG) {
+            Log.d(TAG, "Enabling strict mode");
+            StrictMode.enableDefaults();
+        }
 
         PreferencesUtils.initPreferences(this, getResources());
         // Set default values of preferences on first start.
@@ -35,11 +42,8 @@ public void onCreate() {
         PreferencesUtils.applyDefaultUnit();
         PreferencesUtils.applyNightMode();
 
-
-        // In debug builds: show thread and VM warnings.
-        if (BuildConfig.DEBUG) {
-            Log.d(TAG, "Enabling strict mode");
-            StrictMode.enableDefaults();
+        if (PreferencesUtils.shouldUseDynamicColors()) {
+            DynamicColors.applyToActivitiesIfAvailable(this);
         }
     }
 
diff --git a/src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java b/src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java
index 9c40c4805a..6f5c5affbe 100644
--- a/src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java
+++ b/src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java
@@ -307,6 +307,11 @@ public static boolean shouldUseFullscreen() {
         return getBoolean(R.string.stats_fullscreen_while_recording_key, DEFAULT);
     }
 
+    public static boolean shouldUseDynamicColors() {
+        final boolean DEFAULT = resources.getBoolean(R.bool.settings_ui_dynamic_colors_default);
+        return getBoolean(R.string.settings_ui_dynamic_colors_key, DEFAULT);
+    }
+
     public static boolean shouldVoiceAnnouncementOnDeviceSpeaker() {
         final boolean DEFAULT = resources.getBoolean(R.bool.voice_on_device_speaker_default);
         return getBoolean(R.string.voice_on_device_speaker_key, DEFAULT);
diff --git a/src/main/java/de/dennisguse/opentracks/settings/UserInterfaceSettingsFragment.java b/src/main/java/de/dennisguse/opentracks/settings/UserInterfaceSettingsFragment.java
index 1a6e4ae69a..ca122b43d0 100644
--- a/src/main/java/de/dennisguse/opentracks/settings/UserInterfaceSettingsFragment.java
+++ b/src/main/java/de/dennisguse/opentracks/settings/UserInterfaceSettingsFragment.java
@@ -2,6 +2,7 @@
 
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.os.Build;
 import android.os.Bundle;
 
 import androidx.fragment.app.DialogFragment;
@@ -34,6 +35,9 @@ public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
             return true;
         });
 
+        Preference dynamicColors = findPreference(getString(R.string.settings_ui_dynamic_colors_key));
+        dynamicColors.setEnabled(Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU);
+
         setShowOnMapFormatOptions();
     }
 
diff --git a/src/main/res/values/settings.xml b/src/main/res/values/settings.xml
index 16a6c40423..f66ad622a1 100644
--- a/src/main/res/values/settings.xml
+++ b/src/main/res/values/settings.xml
@@ -271,6 +271,9 @@
     <string name="show_introduction_screen_key" translatable="false">showIntroduction</string>
     <bool name="show_introduction_screen_default">true</bool>
 
+    <string name="settings_ui_dynamic_colors_key" translatable="false">uiDynamicColors</string>
+    <bool name="settings_ui_dynamic_colors_default" translatable="false">false</bool>
+
     <!-- androidx.appcompat.app.AppCompatDelegate.setDefaultNightMode() -->
     <string name="night_mode_key" translatable="false">nightMode</string>
     <string name="night_mode_default" translatable="false">@string/night_mode_system_value</string>
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 2d2e01645f..81cae2f320 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -374,6 +374,8 @@ limitations under the License.
     <string name="settings_chart_by_time">By time</string>
     <!-- Settings Recording -->
     <string name="settings_recording_title">Recording</string>
+    <string name="settings_ui_dynamic_colors_title">Dynamic Colors</string>
+    <string name="settings_ui_dynamic_colors_summary">Use user-defined Dynamic Colors (requires Android 12+)</string>
     <string name="settings_recording_customize_layout_title">Customize your recording layout</string>
     <string name="settings_recording_customize_layout_select_columns">Data fields per row</string>
     <string name="settings_recording_show_on_lockscreen_while_recording_title">Show statistics on lockscreen</string>
diff --git a/src/main/res/xml/settings_user_interface.xml b/src/main/res/xml/settings_user_interface.xml
index 080e8f8ed0..8c34c1c11f 100644
--- a/src/main/res/xml/settings_user_interface.xml
+++ b/src/main/res/xml/settings_user_interface.xml
@@ -12,6 +12,12 @@
         android:title="@string/settings_night_mode_title"
         app:useSimpleSummaryProvider="true" />
 
+    <SwitchPreferenceCompat
+        android:defaultValue="@bool/settings_ui_dynamic_colors_default"
+        android:key="@string/settings_ui_dynamic_colors_key"
+        android:summary="@string/settings_ui_dynamic_colors_summary"
+        android:title="@string/settings_ui_dynamic_colors_title" />
+
     <ListPreference
         android:defaultValue="@string/show_on_map_format_ask"
         android:key="@string/show_on_map_format_key"