[share]fix iOS crash when setting the subject to null

packages/share/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.6.2+3
+
+* Fix iOS crash when setting subject to null.
+
 ## 0.6.2+2
 
 * Update and migrate iOS example project.

packages/share/ios/Classes/SharePlugin.m

@@ -6,6 +6,49 @@
 
 static NSString *const PLATFORM_CHANNEL = @"plugins.flutter.io/share";
 
+@interface ShareData : NSObject <UIActivityItemSource>
+
+@property(readonly, nonatomic, copy) NSString *subject;
+@property(readonly, nonatomic, copy) NSString *text;
+
+- (instancetype)initWithSubject:(NSString *)subject text:(NSString *)text NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)init __attribute__((unavailable("Use initWithSubject:text: instead")));
+
+@end
+
+@implementation ShareData
+
+- (instancetype)init {
+  [super doesNotRecognizeSelector:_cmd];
+  return nil;
+}
+
+- (instancetype)initWithSubject:(NSString *)subject text:(NSString *)text {
+  self = [super init];
+  if (self) {
+    _subject = subject;
+    _text = text;
+  }
+  return self;
+}
+
+- (id)activityViewControllerPlaceholderItem:(UIActivityViewController *)activityViewController {
+  return @"";
+}
+
+- (id)activityViewController:(UIActivityViewController *)activityViewController
+         itemForActivityType:(UIActivityType)activityType {
+  return _text;
+}
+
+- (NSString *)activityViewController:(UIActivityViewController *)activityViewController
+              subjectForActivityType:(UIActivityType)activityType {
+  return [_subject isKindOfClass:NSNull.class] ? nil : _subject;
+}
+
+@end
+
 @implementation FLTSharePlugin
 
 + (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar {
@@ -31,7 +74,7 @@ + (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar {
       NSNumber *originWidth = arguments[@"originWidth"];
       NSNumber *originHeight = arguments[@"originHeight"];
 
-      CGRect originRect;
+      CGRect originRect = CGRectZero;
       if (originX != nil && originY != nil && originWidth != nil && originHeight != nil) {
         originRect = CGRectMake([originX doubleValue], [originY doubleValue],
                                 [originWidth doubleValue], [originHeight doubleValue]);
@@ -48,14 +91,13 @@ + (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar {
   }];
 }
 
-+ (void)share:(id)sharedItems
++ (void)share:(NSString *)shareText
            subject:(NSString *)subject
     withController:(UIViewController *)controller
           atSource:(CGRect)origin {
+  ShareData *data = [[ShareData alloc] initWithSubject:subject text:shareText];
   UIActivityViewController *activityViewController =
-      [[UIActivityViewController alloc] initWithActivityItems:@[ sharedItems ]
-                                        applicationActivities:nil];
-  [activityViewController setValue:subject forKey:@"subject"];
+      [[UIActivityViewController alloc] initWithActivityItems:@[ data ] applicationActivities:nil];
   activityViewController.popoverPresentationController.sourceView = controller.view;
   if (!CGRectIsEmpty(origin)) {
     activityViewController.popoverPresentationController.sourceRect = origin;

packages/share/pubspec.yaml

@@ -3,7 +3,7 @@ description: Flutter plugin for sharing content via the platform share UI, using
   the ACTION_SEND intent on Android and UIActivityViewController on iOS.
 author: Flutter Team <[email protected]>
 homepage: https://github.com/flutter/plugins/tree/master/packages/share
-version: 0.6.2+2
+version: 0.6.2+3
 
 flutter:
   plugin: