Set android app language on startup

android/build.gradle.kts

@@ -10,6 +10,11 @@ plugins {
 }
 
 dependencies {
+    modules {
+        module("androidx.lifecycle:lifecycle-viewmodel-ktx") {
+            replacedBy("androidx.lifecycle:lifecycle-viewmodel")
+        }
+    }
     implementation(projects.core)
     implementation(projects.i18n)
     implementation(projects.data)

android/src/main/java/ca/gosyer/jui/android/App.kt

@@ -8,14 +8,18 @@ package ca.gosyer.jui.android
 
 import android.app.Application
 import androidx.appcompat.app.AppCompatDelegate
+import androidx.core.os.LocaleListCompat
 import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.ProcessLifecycleOwner
 import androidx.lifecycle.lifecycleScope
 import ca.gosyer.core.logging.CKLogger
+import ca.gosyer.core.prefs.Preference
 import ca.gosyer.core.prefs.getAsFlow
 import ca.gosyer.data.ui.model.ThemeMode
 import ca.gosyer.jui.android.data.notification.Notifications
 import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import java.util.Locale
 
 class App : Application(), DefaultLifecycleObserver {
 
@@ -43,6 +47,8 @@ class App : Application(), DefaultLifecycleObserver {
                 )
             }
             .launchIn(ProcessLifecycleOwner.get().lifecycleScope)
+
+        setupAppLanguage(appComponent.dataComponent.uiPreferences.language())
     }
 
     private fun setupNotificationChannels() {
@@ -53,5 +59,32 @@ class App : Application(), DefaultLifecycleObserver {
         }
     }
 
+    private fun setupAppLanguage(languagePref: Preference<String>) {
+        val defaultLocaleList = AppCompatDelegate.getApplicationLocales()
+        if (languagePref.isSet() && languagePref.defaultValue() != languagePref.get()) {
+            AppCompatDelegate.setApplicationLocales(
+                LocaleListCompat.create(
+                    Locale.forLanguageTag(languagePref.get()),
+                    Locale.forLanguageTag("en")
+                )
+            )
+        }
+        languagePref
+            .changes()
+            .onEach {
+                if (languagePref.isSet() && languagePref.defaultValue() != it) {
+                    AppCompatDelegate.setApplicationLocales(
+                        LocaleListCompat.create(
+                            Locale.forLanguageTag(it),
+                            Locale.forLanguageTag("en")
+                        )
+                    )
+                } else if (languagePref.isSet() && it == languagePref.defaultValue()) {
+                    AppCompatDelegate.setApplicationLocales(defaultLocaleList)
+                }
+            }
+            .launchIn(ProcessLifecycleOwner.get().lifecycleScope)
+    }
+
     protected companion object : CKLogger({})
 }

gradle/libs.versions.toml

@@ -15,12 +15,12 @@ materialDialogs = "0.6.6"
 
 # Android
 core = "1.7.0"
-appCompat = "1.4.1"
+appCompat = "1.6.0-alpha01"
 activityCompose = "1.4.0"
 work = "2.6.0"
 
 # Android Lifecycle
-lifecycle = "2.4.1"
+lifecycle = "2.5.0-alpha03"
 
 # Swing
 darklaf = "2.7.3"