Add language options

- Fix some icon color issues

manager/app/src/main/java/com/sukisu/ultra/KernelSUApplication.kt

@@ -1,17 +1,63 @@
 package com.sukisu.ultra
 
+import android.annotation.SuppressLint
 import android.app.Application
+import android.content.Context
+import android.content.res.Configuration
+import android.content.res.Resources
+import android.os.Build
 import coil.Coil
 import coil.ImageLoader
 import com.dergoogler.mmrl.platform.Platform
 import me.zhanghai.android.appiconloader.coil.AppIconFetcher
 import me.zhanghai.android.appiconloader.coil.AppIconKeyer
 import java.io.File
+import java.util.Locale
 
 lateinit var ksuApp: KernelSUApplication
 
 class KernelSUApplication : Application() {
 
+    override fun attachBaseContext(base: Context) {
+        val prefs = base.getSharedPreferences("settings", MODE_PRIVATE)
+        val languageCode = prefs.getString("app_language", "") ?: ""
+
+        var context = base
+        if (languageCode.isNotEmpty()) {
+            val locale = Locale.forLanguageTag(languageCode)
+            Locale.setDefault(locale)
+
+            val config = Configuration(base.resources.configuration)
+            config.setLocale(locale)
+
+            context = base.createConfigurationContext(config)
+        }
+
+        super.attachBaseContext(context)
+    }
+
+    @SuppressLint("ObsoleteSdkInt")
+    override fun getResources(): Resources {
+        val resources = super.getResources()
+        val prefs = getSharedPreferences("settings", MODE_PRIVATE)
+        val languageCode = prefs.getString("app_language", "") ?: ""
+
+        if (languageCode.isNotEmpty()) {
+            val locale = Locale.forLanguageTag(languageCode)
+            val config = Configuration(resources.configuration)
+            config.setLocale(locale)
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                return createConfigurationContext(config).resources
+            } else {
+                @Suppress("DEPRECATION")
+                resources.updateConfiguration(config, resources.displayMetrics)
+            }
+        }
+
+        return resources
+    }
+
     override fun onCreate() {
         super.onCreate()
         ksuApp = this
@@ -35,5 +81,30 @@ class KernelSUApplication : Application() {
         }
     }
 
+    override fun onConfigurationChanged(newConfig: Configuration) {
+        super.onConfigurationChanged(newConfig)
+        applyLanguageSetting()
+    }
 
+    @SuppressLint("ObsoleteSdkInt")
+    private fun applyLanguageSetting() {
+        val prefs = getSharedPreferences("settings", MODE_PRIVATE)
+        val languageCode = prefs.getString("app_language", "") ?: ""
+
+        if (languageCode.isNotEmpty()) {
+            val locale = Locale.forLanguageTag(languageCode)
+            Locale.setDefault(locale)
+
+            val resources = resources
+            val config = Configuration(resources.configuration)
+            config.setLocale(locale)
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                createConfigurationContext(config)
+            } else {
+                @Suppress("DEPRECATION")
+                resources.updateConfiguration(config, resources.displayMetrics)
+            }
+        }
+    }
 }