如何在文本字段中允许和获取拟我表情贴纸

Question

我正在尝试在我的应用程序上使用拟我表情贴纸，但 SwiftUI 的 UITextField 或 TextField 都没有在键盘上显示它们。我怎样才能让它们出现，之后我该如何找回它们？

我尝试了不同的文本输入特征，但没有成功。我什至尝试使用 Twitter 键盘选项，因为贴纸在 Twitter 应用程序中有效，但无济于事。

Here's a picture of how it shows up for me in apps that support it, like WhatsApp, Telegram and Twitter

Answer 1

在 UITextField 中将 "allowsEditingTextAttributes" 属性设置为 YES。

Answer 2

所以...如何获得它是在 textfield/view 所在的视图控制器上实现粘贴方法。

然后你就可以从粘贴板中抓取图像了。基本上

Objective-C

UIImage *image = [[UIPasteboard generalPasteboard] image];

或Swift

let image = UIPasteboard.general.image

这会让你找到 UIImage 然后你可以把它包装在

Objective-c NSAttributedString *memojiStrong = [[NSAttributedString alloc] initWithAttributedString: image];

Swift

let memojiString = NSAttributedString(attachment: image)

这样您就可以将它作为字符串添加到您需要添加的任何地方。如果你想为图像保存它，你可以找到更多的图像 - >字符串：https://www.hackingwithswift.com/example-code/system/how-to-insert-images-into-an-attributed-string-with-nstextattachment

以及发帖人让我走到这一步的一些功劳： https://www.reddit.com/r/iOSProgramming/comments/cuz3ut/memoji_in_chat/ey4onqg/?context=3

Answer 3

对于 RxSwift：

 textView.rx.attributedText.subscribe(onNext: { [weak self] attributeString in
        guard let attributeString = attributeString else { return }

        attributeString.enumerateAttribute(NSAttributedStringKey.attachment, in: NSRange(location: 0, length: attributeString.length), options: [], using: {(value,range,_) -> Void in
            if (value is NSTextAttachment) {
                let attachment: NSTextAttachment? = (value as? NSTextAttachment)
                var image: UIImage?

                if ((attachment?.image) != nil) {
                    image = attachment?.image
                } else {
                    image = attachment?.image(forBounds: (attachment?.bounds)!, textContainer: nil, characterIndex: range.location)
                }

                guard let pasteImage = image else { return }

                guard let pngData = UIImagePNGRepresentation(pasteImage) else { return }
                guard let pngImage = UIImage(data: pngData) else { return }

                guard let attachmentImage = OutgoingFile(image: pngImage, type: .image, isPNG: true) else { return }

                let newString = NSMutableAttributedString(attributedString: attributeString)
                newString.replaceCharacters(in: range, with: "")

                self?.newCommentBodyTextView.textView.attributedText = newString

                self?.addFileOnNews(attachmentImage)

                return
            }
        })
    }).disposed(by: bag)

您可以在 https://kostyakulakov.ru/how-to-get-memoji-from-uitextfield-or-uitextview-swift-4/

中找到更多信息

如何在文本字段中允许和获取拟我表情贴纸

How to allow and get Memoji Stickers in a text field

ios

swift

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