[share_plus] Fix Instagram does not show up in provider list for web links (#1079)

* Fix Instagram does not show up in provider list for web links

* update changelog and pubspec.yaml

* fix code format

* fix format

Co-authored-by: Neo Kusanagi <[email protected]>

Author: neokn

packages/share_plus/share_plus/CHANGELOG.md

@@ -1,3 +1,10 @@
+# 4.2.0
+
+- iOS: Fix Instagram does not show up in provider list for web links
+  - issue #459 appear again
+  - put back NSURL for the shareText, when text is pure URL
+  - using LPMetadataProvider to get LPLinkMetadata make the user experience better
+
 ## 4.1.0
 
 - iOS: Fix text sharing.

packages/share_plus/share_plus/ios/Classes/FLTSharePlusPlugin.m

@@ -73,10 +73,18 @@ @interface SharePlusData : NSObject <UIActivityItemSource>
 @property(readonly, nonatomic, copy) NSString *text;
 @property(readonly, nonatomic, copy) NSString *path;
 @property(readonly, nonatomic, copy) NSString *mimeType;
+@property(readonly, nonatomic, copy) LPLinkMetadata *linkMetadata;
+@property(readonly, nonatomic, copy) NSURL *url;
 
 - (instancetype)initWithSubject:(NSString *)subject
                            text:(NSString *)text NS_DESIGNATED_INITIALIZER;
 
+- (instancetype)initWithSubject:(NSString *)subject
+                            url:(NSURL *)url NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithLinkMetadata:(LPLinkMetadata *)metadata
+    NS_DESIGNATED_INITIALIZER;
+
 - (instancetype)initWithFile:(NSString *)path
                     mimeType:(NSString *)mimeType NS_DESIGNATED_INITIALIZER;
 
@@ -105,6 +113,23 @@ - (instancetype)initWithSubject:(NSString *)subject text:(NSString *)text {
   return self;
 }
 
+- (instancetype)initWithSubject:(NSString *)subject url:(NSURL *)url {
+  self = [super init];
+  if (self) {
+    _subject = [subject isKindOfClass:NSNull.class] ? @"" : subject;
+    _url = url;
+  }
+  return self;
+}
+
+- (instancetype)initWithLinkMetadata:(LPLinkMetadata *)metadata {
+  self = [super init];
+  if (self) {
+    _linkMetadata = metadata;
+  }
+  return self;
+}
+
 - (instancetype)initWithFile:(NSString *)path mimeType:(NSString *)mimeType {
   self = [super init];
   if (self) {
@@ -135,6 +160,14 @@ - (id)activityViewControllerPlaceholderItem:
 
 - (id)activityViewController:(UIActivityViewController *)activityViewController
          itemForActivityType:(UIActivityType)activityType {
+  if (_linkMetadata != nil) {
+    return _linkMetadata.originalURL;
+  }
+
+  if (_url != nil) {
+    return _url;
+  }
+
   if (!_path || !_mimeType) {
     return _text;
   }
@@ -182,6 +215,10 @@ - (UIImage *)imageWithImage:(UIImage *)image scaledToSize:(CGSize)newSize {
 - (LPLinkMetadata *)activityViewControllerLinkMetadata:
     (UIActivityViewController *)activityViewController
     API_AVAILABLE(macos(10.15), ios(13.0), watchos(6.0)) {
+  if (_linkMetadata != nil) {
+    return _linkMetadata;
+  }
+
   LPLinkMetadata *metadata = [[LPLinkMetadata alloc] init];
 
   if ([_subject length] > 0) {
@@ -348,13 +385,63 @@ + (void)shareText:(NSString *)shareText
     withController:(UIViewController *)controller
           atSource:(CGRect)origin
           toResult:(FlutterResult)result {
-  NSObject *data = [[SharePlusData alloc] initWithSubject:subject
-                                                     text:shareText];
-  [self share:@[ data ]
-         withSubject:subject
-      withController:controller
-            atSource:origin
-            toResult:result];
+  NSURL *url = [NSURL URLWithString:shareText];
+  if (!url || ![url scheme] || ![url host]) {
+    NSObject *data = [[SharePlusData alloc] initWithSubject:subject
+                                                       text:shareText];
+    [self share:@[ data ]
+           withSubject:subject
+        withController:controller
+              atSource:origin
+              toResult:result];
+    return;
+  }
+
+  if (@available(iOS 13, *) && ([[url scheme] isEqualToString:@"http"] ||
+                                [[url scheme] isEqualToString:@"https"])) {
+    LPMetadataProvider *metadataProvider = [[LPMetadataProvider alloc] init];
+    [metadataProvider
+        startFetchingMetadataForURL:url
+                  completionHandler:^(LPLinkMetadata *metadata,
+                                      NSError *error) {
+                    if (!error) {
+                      if (subject != nil && [subject length] > 0) {
+                        metadata.title = subject;
+                      }
+                      NSObject *data =
+                          [[SharePlusData alloc] initWithLinkMetadata:metadata];
+                      dispatch_async(dispatch_get_main_queue(), ^{
+                        [self share:@[ data ]
+                               withSubject:subject
+                            withController:controller
+                                  atSource:origin
+                                  toResult:result];
+                      });
+
+                      return;
+                    }
+
+                    NSLog(@"FetchingMetadataForURL %@ got error: %@", url,
+                          error);
+                    NSObject *data =
+                        [[SharePlusData alloc] initWithSubject:subject url:url];
+                    dispatch_async(dispatch_get_main_queue(), ^{
+                      [self share:@[ data ]
+                             withSubject:subject
+                          withController:controller
+                                atSource:origin
+                                toResult:result];
+                    });
+                  }];
+  } else {
+    NSObject *data = [[SharePlusData alloc] initWithSubject:subject url:url];
+    [self share:@[ data ]
+           withSubject:subject
+        withController:controller
+              atSource:origin
+              toResult:result];
+    return;
+  }
 }
 
 + (void)shareFiles:(NSArray *)paths

packages/share_plus/share_plus/pubspec.yaml

@@ -1,6 +1,6 @@
 name: share_plus
 description: Flutter plugin for sharing content via the platform share UI, using the ACTION_SEND intent on Android and UIActivityViewController on iOS.
-version: 4.1.0
+version: 4.2.0
 homepage: https://plus.fluttercommunity.dev/
 repository: https://github.com/fluttercommunity/plus_plugins/tree/main/packages/
 issue_tracker: https://github.com/fluttercommunity/plus_plugins/labels/share_plus