Question

我在活动项目中有文字，但现在它在WhatsApp或Facebook上共享，此方法为每个应用程序共享相同的文本。是否可以为每个应用分享不同的文字？

- (void)share {
    NSString *text = @"share test";

    NSArray * activityItems = @[[NSString stringWithFormat:@"%@", text], [NSURL URLWithString:@"http://www.test.co"]];
    NSArray * applicationActivities = nil;
    NSArray * excludeActivities = @[UIActivityTypeAssignToContact, UIActivityTypeCopyToPasteboard, UIActivityTypePostToWeibo, UIActivityTypePrint, UIActivityTypeMessage];

    UIActivityViewController * activityController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:applicationActivities];
    activityController.excludedActivityTypes = excludeActivities;

    [self presentViewController:activityController animated:YES completion:nil];

    [activityController setCompletionWithItemsHandler:^(NSString *activityType, BOOL completed, NSArray *returnedItems, NSError *activityError) {
        NSLog(@"The setCompletionWithItemsHandler completed = %i", completed);

        if (completed) {
            NSLog(@"The selected activity was %@", activityType);

            if ( [activityType isEqualToString:UIActivityTypeMail]) {
                NSLog(@"Mail sended");
            } else if ( [activityType isEqualToString:UIActivityTypePostToTwitter]) {
                NSLog(@"Post on twitter, ok!");
            } else if ( [activityType isEqualToString:UIActivityTypePostToFacebook]) {
                NSLog(@"Post on facebook, ok!");
            } else if ( [activityType isEqualToString:UIActivityTypeMessage]) {
                NSLog(@"SMS sended!");
            }
        }
    }];
}

Answer 1

简短回答：不。

但您可以使用打开的App with URL方法并将参数传递给该App。使用该方法时，您必须使用自定义UI，并且不能使用UIActivityViewController。（据我所知）

所以，如果你想拥有多个按钮，有可能： “与WhatsApp分享” “与Facebook分享” 等

Answer 2

简短的回答：是的！

实际上，有一种方法可以在选择多个应用后返回不同的内容。

您将必须创建两个UIActivityItemSource，一个将返回UIImage，另一个将返回NSObject。这样做是为了“欺骗”您将共享这些对象的系统，但是在用户选择一个应用程序之后，我们实际上可以返回其他内容，例如URL。

class SocialActivityItem: NSObject, UIActivityItemSource {
    var img: UIImage?
    var url: URL?

    convenience init(img: UIImage, url: URL) {
        self.init()
        self.img = img
        self.url = url
    }

    // This will be called BEFORE showing the user the apps to share (first step)
    func activityViewControllerPlaceholderItem(_ activityViewController: UIActivityViewController) -> Any {
        return img!
    }

    // This will be called AFTER the user has selected an app to share (second step)
    func activityViewController(_ activityViewController: UIActivityViewController, itemForActivityType activityType: UIActivityType?) -> Any? {
        //Instagram
        if activityType?.rawValue == "com.burbn.instagram.shareextension" {
            return img!
        } else {
            return url
        }
    }
}

和

class TextActivityItem: NSObject, UIActivityItemSource {
    var textToShare: String?

    convenience init(textToShare: String) {
        self.init()
        self.textToShare = textToShare
    }

    // This will be called BEFORE showing the user the apps to share (first step)
    func activityViewControllerPlaceholderItem(_ activityViewController: UIActivityViewController) -> Any {
        return NSObject()
    }

    // This will be called AFTER the user has selected an app to share (second step)
    func activityViewController(_ activityViewController: UIActivityViewController, itemForActivityType activityType: UIActivityType?) -> Any? {
      var text = ""
      if activityType?.rawValue == "net.whatsapp.WhatsApp.ShareExtension" {
          text = "Sharing on Whatsapp"
      }

      if activityType == UIActivityType.postToFacebook {
          text = "Sharing on Facebook"
      }
      return text.isEmpty ? textToShare : text
    }
}

然后，您只需要设置所有内容：

let url = URL(string: "www.google.com")!
let socialProvider = SocialActivityItem(img: img, url: url)
let textProvider = TextActivityItem(textToShare: "Sharing on social media!")
let activityViewController = UIActivityViewController(activityItems: [socialProvider, textProvider], applicationActivities: nil)

UIActivityViewController为WhatsApp或Facebook

2 个答案: