FIX: Unable to load asset: "AssetManifest.json" & update intl version

.gitignore

@@ -8,6 +8,7 @@
 .buildlog/
 .history
 .svn/
+.vscode
 
 # IntelliJ related
 *.iml

CHANGELOG.md

@@ -125,4 +125,9 @@
 
 ## [4.1.0]
 
-- Upgraded packages and SDK version
+- Upgraded packages and SDK version
+
+## [4.1.2]
+
+- Upgraded packages and SDK version
+- Fixed [breaking change](https://docs.flutter.dev/release/breaking-changes/asset-manifest-dot-json) from Flutter

lib/src/constants/constants.dart

@@ -1,15 +1,12 @@
-class Constants
-{
-    static const String assetManifestFilename = 'AssetManifest.json';
+class Constants {
+  static const String localizedAssetsPath = 'assets/i18n';
 
-    static const String localizedAssetsPath = 'assets/i18n';
+  static const String pluralZero = 'zero';
+  static const String pluralOne = 'one';
+  static const String pluralTwo = 'two';
+  static const String pluralFew = 'few';
+  static const String pluralMany = 'many';
+  static const String pluralOther = 'other';
 
-    static const String pluralZero = 'zero';
-    static const String pluralOne = 'one';
-    static const String pluralTwo = 'two';
-    static const String pluralFew = 'few';
-    static const String pluralMany = 'many';
-    static const String pluralOther = 'other';
-
-    static const String pluralValueArg = '{{value}}';
-}
+  static const String pluralValueArg = '{{value}}';
+}

lib/src/services/locale_file_service.dart

@@ -1,69 +1,60 @@
 import 'dart:convert';
 import 'package:flutter/services.dart';
-import 'package:flutter_translate/src/constants/constants.dart';
 
-class LocaleFileService
-{
-    static Future<Map<String, String>> getLocaleFiles(List<String> locales, String basePath) async
-    {
-        var localizedFiles = await _getAllLocaleFiles(basePath);
+class LocaleFileService {
+  static Future<Map<String, String>> getLocaleFiles(
+      List<String> locales, String basePath) async {
+    var localizedFiles = await _getAllLocaleFiles(basePath);
 
-        final files = new Map<String, String>();
+    final files = new Map<String, String>();
 
-        for(final language in locales.toSet())
-        {
-            var file = _findLocaleFile(language, localizedFiles, basePath);
+    for (final language in locales.toSet()) {
+      var file = _findLocaleFile(language, localizedFiles, basePath);
 
-            files[language] = file;
-        }
-
-        return files;
+      files[language] = file;
     }
 
-    static Future<String?> getLocaleContent(String file) async
-    {
-        final ByteData? data = await rootBundle.load(file);
+    return files;
+  }
 
-        if (data == null) return null;
-
-        return utf8.decode(data.buffer.asUint8List());
-    }
+  static Future<String?> getLocaleContent(String file) async {
+    final ByteData? data = await rootBundle.load(file);
 
-    static Future<List<String>> _getAllLocaleFiles(String basePath) async
-    {
-        final manifest = await rootBundle.loadString(Constants.assetManifestFilename);
+    if (data == null) return null;
 
-        Map<String, dynamic> map = jsonDecode(manifest);
+    return utf8.decode(data.buffer.asUint8List());
+  }
 
-        var separator = basePath.endsWith('/') ? '' : '/';
+  static Future<List<String>> _getAllLocaleFiles(String basePath) async {
+    final assetManifest = await AssetManifest.loadFromAssetBundle(rootBundle);
+    final assets = assetManifest.listAssets();
 
-        return map.keys.where((x) => x.startsWith('$basePath$separator')).toList();
-    }
+    final separator = basePath.endsWith('/') ? '' : '/';
 
-    static String _findLocaleFile(String languageCode, List<String> localizedFiles, String basePath)
-    {
-        var file = _getFilepath(languageCode, basePath);
+    return assets.where((x) => x.startsWith('$basePath$separator')).toList();
+  }
 
-        if(!localizedFiles.contains(file))
-        {
-            if(languageCode.contains('_'))
-            {
-                file = _getFilepath(languageCode.split('_').first, basePath);
-            }
-        }
+  static String _findLocaleFile(
+      String languageCode, List<String> localizedFiles, String basePath) {
+    var file = _getFilepath(languageCode, basePath);
 
-        if(file == null)
-        {
-            throw new Exception('The asset file for the language "$languageCode" was not found.');
-        }
+    if (!localizedFiles.contains(file)) {
+      if (languageCode.contains('_')) {
+        file = _getFilepath(languageCode.split('_').first, basePath);
+      }
+    }
 
-        return file;
+    if (file == null) {
+      throw new Exception(
+          'The asset file for the language "$languageCode" was not found.');
     }
 
-    static String? _getFilepath(String languageCode, String basePath)
-    {
-        var separator = basePath.endsWith('/') ? '' : '/';
+    return file;
+  }
 
-        return '$basePath$separator$languageCode.json';
-    }
+  static String? _getFilepath(String languageCode, String basePath) {
+    var separator = basePath.endsWith('/') ? '' : '/';
+
+    return '$basePath$separator$languageCode.json';
+  }
 }

lib/src/utils/device_locale.dart

@@ -2,23 +2,22 @@ import 'package:flutter/widgets.dart';
 import 'package:universal_io/io.dart';
 
 /// Returns the current device locale
-Locale? getCurrentLocale() 
-{
-    return _localeFromString(Platform.localeName);
+Locale? getCurrentLocale() {
+  return _localeFromString(Platform.localeName);
 }
 
-Locale? _localeFromString(String code) 
-{
-    var separator = code.contains('_') ? '_' : code.contains('-') ? '-' : null;
+Locale? _localeFromString(String code) {
+  var separator = code.contains('_')
+      ? '_'
+      : code.contains('-')
+          ? '-'
+          : null;
 
-    if (separator != null) 
-    {
-        var parts = code.split(RegExp(separator));
+  if (separator != null) {
+    var parts = code.split(RegExp(separator));
 
-        return Locale(parts[0], parts[1]);
-    } 
-    else 
-    {
-        return Locale(code);
-    }
+    return Locale(parts[0], parts[1]);
+  } else {
+    return Locale(code);
+  }
 }

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_translate
 description: Flutter Translate is a fully featured localization / internationalization (i18n) library for Flutter.
-version: 4.1.0
+version: 4.1.2
 homepage: https://jesway.com
 repository: https://github.com/Jesway/flutter_translate
 
@@ -11,10 +11,8 @@ dependencies:
   flutter:
     sdk: flutter
   universal_io: ^2.2.2
-  intl: ^0.19.0
+  intl: ^0.20.2
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
-
-flutter: