In light of this popularity, the following SwiftUI tutorial seeks to outline the key steps in localizing iOS apps built with SwiftUI. To bridge these platform differences, we can extend the views with additional properties, to get the same APIs. Now, getting the scroll view is as simple as calling this method with the text view: Next, we need to get the cursors position. I am having a problem on a simple Form{}. Is there a way to make the TextEditor read-only and do not see the keyboard when the user taps on it? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The coordinator will write to the context whenever the text views text or position changes, and will observe and sync changes in the context with the text view. Is it possible to scroll to the TextEditor's current cursor position? Although UIKit and AppKit has a bunch of built-in support for rich text, a lot is missing. SwiftUI provides us two versions of fixed size modifier. I believe I tried many solutions on the Internet that handle keyboard events and try to adjust some paddings/offsets etc, but none of them worked for me. Adding multi-platform support to the mix makes things even worse, since UIKit and AppKit handle strings, attributes, attachments etc. Hacking with Swift is 2022 Hudson Heavy Industries. We can also remove setting the attributedString in the editor, since the coordinator handles this for us. You can mix string attributes and SwiftUI modifiers, with the string attributes taking priority. An alternative solution might be to just compare the newValue of newItemText to the old one on every change and - starting from the end - compare characters of each index until you find a mismatch. To learn more, see our tips on writing great answers. Asking for help, clarification, or responding to other answers. , How to dismiss the keyboard when the user scrolls, How to add keyboard shortcuts using keyboardShortcut(), How to make a TextField expand vertically as the user types, Click here to visit the Hacking with Swift store >>. SwiftUIs scrollDismissesKeyboard() modifier gives us precise control over how the keyboard should dismiss when the user scrolls around. We can now add a button to our test app and have it highlight when the rich text context indicates that the current text is underlined. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. TextEditor came to SwiftUI with the | by DevTechie | DevTechie | Medium 500 Apologies, but something went wrong on our end. UPDATE Well extend native types to extend the foundation support for rich text, create new types to bridge the various platforms and make sure that we have a basic, working foundation that we can expand in future posts. We are using our custom view TextFieldWithKeyboardObserver instead of a regular SwiftUI TextField. Swift - How to get text formatting in a text editor like in the notes app? For these views, lets add a RichTextViewRepresentable protocol: We can now make both text views implement this protocol by adding an attributedString to them: Using protocols to communicate bridging between platforms is a nice way to make our code cleaner in a controlled way and remove the need for #if checks within the library. In the image above, I have typed in the text field, but the Text view still shows the original text. Seems like TextFields do not have this issue at all (at least in iOS 15) as they stay visible (container view is scrolled as needed) even when keyboard appears on screen. Lets first add a way for the coordinator to store context observables: Then lets add a way for the coordinator to subscribe to context changes: As you can see, we have to duplicate the isUnderlined logic from earlier. Applications of super-mathematics to non-super mathematics, "settled in as a Washingtonian" in Andrew's Brain by E. L. Doctorow. Nov 11th, 2020 First off, the area of the text view thats being made visible is limited to exactly the size and position of the cursor. You just need to have a state variable to hold the input text. Another complication is SwiftUI, where we have to find a way to embed and bridge the platform-specific views in a way that works on all platforms. The carectRect(for:) method returns the rect representing the cursor, but in the coordinate space of the text view. Thanks for contributing an answer to Stack Overflow! We can fix this by making the rich text editor setup a RichTextCoordinator in makeCoordinator: If we run the test app again, youll see that the text is now updated when we type in the rich text editor. The other issue is that if the user is typing very quickly and the cursor is changing lines rapidly, the scroll views offset will stop animating smoothly and start jittering around. Avoiding Keyboard in SwifUI with TextEditor. a document in a document-based app. Updated for Xcode 14.2. Here are the two cases combined into one example setting the font style to headline and text color to red: You can pass desired font size using the following modifiers: You can further customize the TextEditor to change the spacing between lines of text, set a line limit or text alignment. Many basic tasks are actually pretty complicated. Please, The open-source game engine youve been waiting for: Godot (Ep. Create a Scroll View The reason the text view won't scroll is that Mac text views aren't wrapped in scroll views like iOS text views are. Code of Conduct. Turns out that in AppKit, you must create a scroll view from the text view type that you want to use, cast its documentView to get a text view, then use the scrollView to get the scrollable behavior that we get by default in iOS. Configuring a scroll view var content: Content Then create a TextEditor instance in the body of your view like this: To instantiate the text editor, you pass the binding of inputText so that the state variable can store the user input. Lets then adjust the RichTextEditor and RichTextCoordinator to require such a context: We can now add observable information to the context, for instance if the text is underlined or not: We can then use the same text view delegation as before to sync this information with the context when the text views text or position changes: As you can see, the code is still rough even though we added a textAttributes(at:) function to the text view. Multiple animations end up running at simultaneously and are competing for which gets to control the content offset. Theoretically we should now be able to just scroll to this percentage of the TextEditor's height using ScrollViewProxy: Unfortunately, this doesn't work. How to Copy Text to Clip Board in Android? What is the best way to deprotonate a methyl group? In iOS 16, we finally have control over how a text field grows. Updated my answer with a fix. We need to control the animation entirely ourselves. Furthermore, the UITextView and NSTextView APIs differ quite a bit. Thanks - MUCH APPRECIATED! This is because we havent put the coordinator to use yet. Asking for help, clarification, or responding to other answers. However, since we don't know where spaces and line-breaks are, we don't know at what height that cursor is. Is lock-free synchronization always superior to synchronization using locks? I personally prefer to use protocols to enforce that this is done correctly. The result is an open-source library that youre able to use in your own projects. To design SwiftUI for multi-platform use, we can also add a ViewRepresentable typealias that makes platform-specific views in SwiftUI easier to define within the library. Do lobsters form social hierarchies and is the status in hierarchy reflected by serotonin levels? I.e. As the user is typing, the scroll view is scrolled smoothly to keep the cursor in view at all times, and there are no issues with the user typing too quickly for the animations to keep up. Making statements based on opinion; back them up with references or personal experience. Why does Excel vba copy to clipboard inconsistently? Code of Conduct. These parameters describe the axis of expansion. It does not appear that TextEditor provides a "non-editable" state. This topic has been closed due to inactivity, so you can't reply. If we could somehow observe context changes, we could fix so that just changing the contexts isUnderlined could tell something with access to the text view to act on that change. >>, Paul Hudson @twostraws June 7th 2022. Can a private person deceive a defendant to obtain evidence? let attributedString = try! In order to initialize a TextEditor, you need to pass in a binding to a @State variable which will store the text entered in the TextEditor: The result should look like the image below. you don't know where the a was inserted when comparing "aaaaaaa" and "aaaaaa". Just use a .constant() binding like this and you'll maintain full TextEditor functionality (scrolling, selection for copy/paste, etc): Full example code below. ScrollView displays its content within the scrollable content region. It is very easy to use TextEditor. At the time of writing, we are using Xcode 12.3. If you have to support iOS 14 and 13, things are trickier. 5 min read. import SwiftUI import UniformTypeIdentifiers struct CopyTextView: View { @State private var text: String = "" @State private var buttonText = "Copy" private let pasteboard = UIPasteboard.general var body: some View { GroupBox { VStack { HStack { Text ("Label:") Spacer () } TextField ("Insert text here", text: $text) .textFieldStyle Pulp Fiction is copyright 1994 Miramax Films. Making statements based on opinion; back them up with references or personal experience. SwiftUI, iOS 14, Keyboard Avoidance in Form { TextEditor () } Forums > SwiftUI SPONSORED Play is the first native iOS design tool created for designers and engineers. In SwiftUI, however, we have to find a way to observe the current state of the text view, like we did when we synced text view changes back to the text binding. Follow this tutorial to learn how to create, use and style TextEditor in SwiftUI. Update Policy RichTextKit is under development, but already provides the functionality featured in this post, as well as functionality to work with rich text, attributes, styles, traits etc. Under our custom ScrollView, we need to add a text editor with a send button. One example is how to set up these views. Update Policy Waldo helps teams like Rocket Money provide bug free experiences to their iOS users while saving time. The example below sets a frame that matches the size of the screen, but you can play around with the sizing if needed. For non-string types, it updates the value when the user commits their edits, such as by pressing the Return key. Note that this is the seelctedTextRange property, not the selectedRange property. To apply styling within specific portions of the text, you can create the text view from an AttributedString, which in turn allows you to use Markdown to style runs of text. The text range version gives us a UITextRange which uses UITextPositions for its start and end locations, in constrast with selectedRange which is just a regular NSRange of integers. What does in this context mean?
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