fix: SharedPreferencesAdapter ~ type 'List<Object?>' is not a subtype of type 'FutureOr<List<String>?>' in type cast

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.lock

@@ -1,22 +1,22 @@
 PODS:
   - Flutter (1.0.0)
-  - shared_preferences (0.0.1):
+  - shared_preferences_ios (0.0.1):
     - Flutter
 
 DEPENDENCIES:
   - Flutter (from `Flutter`)
-  - shared_preferences (from `.symlinks/plugins/shared_preferences/ios`)
+  - shared_preferences_ios (from `.symlinks/plugins/shared_preferences_ios/ios`)
 
 EXTERNAL SOURCES:
   Flutter:
     :path: Flutter
-  shared_preferences:
-    :path: ".symlinks/plugins/shared_preferences/ios"
+  shared_preferences_ios:
+    :path: ".symlinks/plugins/shared_preferences_ios/ios"
 
 SPEC CHECKSUMS:
-  Flutter: 434fef37c0980e73bb6479ef766c45957d4b510c
-  shared_preferences: af6bfa751691cdc24be3045c43ec037377ada40d
+  Flutter: 50d75fe2f02b26cc09d224853bb45737f8b3214a
+  shared_preferences_ios: 548a61f8053b9b8a49ac19c1ffbc8b92c50d68ad
 
 PODFILE CHECKSUM: aafe91acc616949ddb318b77800a7f51bffa2a4c
 
-COCOAPODS: 1.10.1
+COCOAPODS: 1.11.2

example/ios/Runner.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -156,7 +156,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1020;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {

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

@@ -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/Info.plist

@@ -41,5 +41,7 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
 </dict>
 </plist>

lib/src/impl/shared_preferences_adapter.dart

@@ -18,6 +18,15 @@ class SharedPreferencesAdapter implements SharedPreferencesLike {
   static Future<T> _wrapFutureOr<T>(FutureOr<T> value) =>
       value is Future<T> ? value : SynchronousFuture<T>(value);
 
+  /// Create [SharedPreferencesAdapter] from [SharedPreferences].
+  static FutureOr<SharedPreferencesAdapter> from(
+    FutureOr<SharedPreferences> prefsOrFuture,
+  ) =>
+      prefsOrFuture is Future<SharedPreferences>
+          ? prefsOrFuture.then((p) => SharedPreferencesAdapter._(p))
+          : SharedPreferencesAdapter._(prefsOrFuture)
+              as FutureOr<SharedPreferencesAdapter>;
+
   @override
   Future<void> clear([void _]) =>
       _prefs.clear().throwsIfNotSuccess('Cannot clear');
@@ -27,42 +36,20 @@ class SharedPreferencesAdapter implements SharedPreferencesLike {
       _wrap(_prefs.containsKey(key));
 
   @override
-  Future<Map<String, Object?>> reload() {
-    return _prefs.reload().then((_) {
-      return {
-        for (final k in _prefs.getKeys()) k: _prefs.get(k),
-      };
-    });
-  }
+  Future<Map<String, Object?>> reload() =>
+      _prefs.reload().then((_) => _getAllFromPrefs());
 
   @override
   Future<void> remove(String key, [void _]) =>
       _prefs.remove(key).throwsIfNotSuccess('Cannot remove key=$key');
 
-  /// Create [SharedPreferencesAdapter] from [SharedPreferences].
-  static FutureOr<SharedPreferencesAdapter> from(
-    FutureOr<SharedPreferences> prefsOrFuture,
-  ) =>
-      prefsOrFuture is Future<SharedPreferences>
-          ? prefsOrFuture.then((p) => SharedPreferencesAdapter._(p))
-          : SharedPreferencesAdapter._(prefsOrFuture)
-              as FutureOr<SharedPreferencesAdapter>;
-
   @override
-  Future<T?> read<T extends Object>(String key, Decoder<T?> decoder, [void _]) {
-    var val = _prefs.get(key);
-    if (val is List) {
-      val = _prefs.getStringList(key);
-    }
-    return _wrapFutureOr(decoder(val));
-  }
+  Future<T?> read<T extends Object>(String key, Decoder<T?> decoder,
+          [void _]) =>
+      _wrapFutureOr(decoder(_getFromPrefs(key)));
 
   @override
-  Future<Map<String, Object?>> readAll([void _]) {
-    return _wrap({
-      for (final k in _prefs.getKeys()) k: _prefs.get(k),
-    });
-  }
+  Future<Map<String, Object?>> readAll([void _]) => _wrap(_getAllFromPrefs());
 
   @override
   Future<void> write<T extends Object>(
@@ -74,6 +61,17 @@ class SharedPreferencesAdapter implements SharedPreferencesLike {
         : _write(encodedOrFuture, key, value);
   }
 
+  Object? _getFromPrefs(String key) {
+    final val = _prefs.get(key);
+    return val is List ? _prefs.getStringList(key) : val;
+  }
+
+  Map<String, Object?> _getAllFromPrefs() {
+    return {
+      for (final k in _prefs.getKeys()) k: _getFromPrefs(k),
+    };
+  }
+
   Future<void> _write(Object? encoded, String key, Object? value) {
     assert(encoded is! Future<dynamic>,
         'The actual type of encoded value is ${encoded.runtimeType}');