No translation for the key callback

Author: Umesh Shrestha

example/ios/Flutter/AppFrameworkInfo.plist

@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>8.0</string>
+  <string>9.0</string>
 </dict>
 </plist>

example/ios/Podfile

@@ -10,78 +10,32 @@ project 'Runner', {
   'Release' => :release,
 }
 
-def parse_KV_file(file, separator='=')
-  file_abs_path = File.expand_path(file)
-  if !File.exists? file_abs_path
-    return [];
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
   end
-  generated_key_values = {}
-  skip_line_start_symbols = ["#", "/"]
-  File.foreach(file_abs_path) do |line|
-    next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
-    plugin = line.split(pattern=separator)
-    if plugin.length == 2
-      podname = plugin[0].strip()
-      path = plugin[1].strip()
-      podpath = File.expand_path("#{path}", file_abs_path)
-      generated_key_values[podname] = podpath
-    else
-      puts "Invalid plugin specification: #{line}"
-    end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
   end
-  generated_key_values
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
 end
 
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_ios_podfile_setup
+
 target 'Runner' do
   use_frameworks!
   use_modular_headers!
 
-  # Flutter Pod
-
-  copied_flutter_dir = File.join(__dir__, 'Flutter')
-  copied_framework_path = File.join(copied_flutter_dir, 'Flutter.framework')
-  copied_podspec_path = File.join(copied_flutter_dir, 'Flutter.podspec')
-  unless File.exist?(copied_framework_path) && File.exist?(copied_podspec_path)
-    # Copy Flutter.framework and Flutter.podspec to Flutter/ to have something to link against if the xcode backend script has not run yet.
-    # That script will copy the correct debug/profile/release version of the framework based on the currently selected Xcode configuration.
-    # CocoaPods will not embed the framework on pod install (before any build phases can generate) if the dylib does not exist.
-
-    generated_xcode_build_settings_path = File.join(copied_flutter_dir, 'Generated.xcconfig')
-    unless File.exist?(generated_xcode_build_settings_path)
-      raise "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter pub get is executed first"
-    end
-    generated_xcode_build_settings = parse_KV_file(generated_xcode_build_settings_path)
-    cached_framework_dir = generated_xcode_build_settings['FLUTTER_FRAMEWORK_DIR'];
-
-    unless File.exist?(copied_framework_path)
-      FileUtils.cp_r(File.join(cached_framework_dir, 'Flutter.framework'), copied_flutter_dir)
-    end
-    unless File.exist?(copied_podspec_path)
-      FileUtils.cp(File.join(cached_framework_dir, 'Flutter.podspec'), copied_flutter_dir)
-    end
-  end
-
-  # Keep pod path relative so it can be checked into Podfile.lock.
-  pod 'Flutter', :path => 'Flutter'
-
-  # Plugin Pods
-
-  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
-  # referring to absolute paths on developers' machines.
-  system('rm -rf .symlinks')
-  system('mkdir -p .symlinks/plugins')
-  plugin_pods = parse_KV_file('../.flutter-plugins')
-  plugin_pods.each do |name, path|
-    symlink = File.join('.symlinks', 'plugins', name)
-    File.symlink(path, symlink)
-    pod name, :path => File.join(symlink, 'ios')
-  end
+  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
 end
 
 post_install do |installer|
   installer.pods_project.targets.each do |target|
-    target.build_configurations.each do |config|
-      config.build_settings['ENABLE_BITCODE'] = 'NO'
-    end
+    flutter_additional_ios_build_settings(target)
   end
 end

example/ios/Runner.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -168,7 +168,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1020;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
@@ -359,7 +359,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -442,7 +442,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -492,7 +492,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;

example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -18,6 +18,9 @@ void main() async {
       Locale('ru', 'RU')
     ],
     path: 'resources/langs',
+    onLocaleKeyNotFound: (key, locale) {
+      print('Locale key not found $key ${locale.languageCode}');
+    },
     child: MyApp(),
     // fallbackLocale: Locale('en', 'US'),
     // startLocale: Locale('de', 'DE'),

example/lib/main.dart

@@ -76,19 +76,23 @@ class EasyLocalization extends StatefulWidget {
   /// @Default value `errorWidget = ErrorWidget()`
   final Widget Function(FlutterError? message)? errorWidget;
 
-  EasyLocalization({
-    Key? key,
-    required this.child,
-    required this.supportedLocales,
-    required this.path,
-    this.fallbackLocale,
-    this.startLocale,
-    this.useOnlyLangCode = false,
-    this.useFallbackTranslations = false,
-    this.assetLoader = const RootBundleAssetLoader(),
-    this.saveLocale = true,
-    this.errorWidget,
-  })  : assert(supportedLocales.isNotEmpty),
+  /// callback when key is not available in translations of the locale
+  final Function(String key, Locale locale)? onLocaleKeyNotFound;
+
+  EasyLocalization(
+      {Key? key,
+      required this.child,
+      required this.supportedLocales,
+      required this.path,
+      this.fallbackLocale,
+      this.startLocale,
+      this.useOnlyLangCode = false,
+      this.useFallbackTranslations = false,
+      this.assetLoader = const RootBundleAssetLoader(),
+      this.saveLocale = true,
+      this.errorWidget,
+      this.onLocaleKeyNotFound})
+      : assert(supportedLocales.isNotEmpty),
         assert(path.isNotEmpty),
         super(key: key) {
     EasyLocalization.logger.debug('Start');
@@ -162,6 +166,7 @@ class _EasyLocalizationState extends State<EasyLocalization> {
       delegate: _EasyLocalizationDelegate(
         localizationController: localizationController,
         supportedLocales: widget.supportedLocales,
+        onLocaleKeyNotFound: widget.onLocaleKeyNotFound,
       ),
     );
   }
@@ -241,12 +246,16 @@ class _EasyLocalizationProvider extends InheritedWidget {
 class _EasyLocalizationDelegate extends LocalizationsDelegate<Localization> {
   final List<Locale>? supportedLocales;
   final EasyLocalizationController? localizationController;
+  final Function(String key, Locale locale)? onLocaleKeyNotFound;
 
   ///  * use only the lang code to generate i18n file path like en.json or ar.json
   // final bool useOnlyLangCode;
 
-  _EasyLocalizationDelegate(
-      {this.localizationController, this.supportedLocales}) {
+  _EasyLocalizationDelegate({
+    this.localizationController,
+    this.supportedLocales,
+    this.onLocaleKeyNotFound,
+  }) {
     EasyLocalization.logger.debug('Init Localization Delegate');
   }
 
@@ -262,7 +271,9 @@ class _EasyLocalizationDelegate extends LocalizationsDelegate<Localization> {
 
     Localization.load(value,
         translations: localizationController!.translations,
-        fallbackTranslations: localizationController!.fallbackTranslations);
+        fallbackTranslations: localizationController!.fallbackTranslations,
+        onLocaleKeyNotFound: onLocaleKeyNotFound);
+
     return Future.value(Localization.instance);
   }
 

lib/src/easy_localization_app.dart

@@ -7,6 +7,7 @@ import 'translations.dart';
 class Localization {
   Translations? _translations, _fallbackTranslations;
   late Locale _locale;
+  late Function(String key, Locale locale)? _onLocaleKeyNotFound;
 
   final RegExp _replaceArgRegex = RegExp('{}');
   final RegExp _linkKeyMatcher =
@@ -29,11 +30,13 @@ class Localization {
   static bool load(
     Locale locale, {
     Translations? translations,
+    Function(String key, Locale locale)? onLocaleKeyNotFound,
     Translations? fallbackTranslations,
   }) {
     instance._locale = locale;
     instance._translations = translations;
     instance._fallbackTranslations = fallbackTranslations;
+    instance._onLocaleKeyNotFound = onLocaleKeyNotFound;
     return translations == null ? false : true;
   }
 
@@ -188,6 +191,7 @@ class Localization {
   String _resolve(String key, {bool logging = true, bool fallback = true}) {
     var resource = _translations?.get(key);
     if (resource == null) {
+      if (_onLocaleKeyNotFound != null) _onLocaleKeyNotFound!(key, _locale);
       if (logging) {
         EasyLocalization.logger.warning('Localization key [$key] not found');
       }