ryanlintott

//
//  ShareSheetView.swift
//  ScareSheet
//
//  Created by Ryan Lintott on 2025-05-08.
//

import ShapeUp
import SwiftUI

ryanlintott

//
//  WidgetConfiguration+extensions.swift
//
//
//  Created by Ryan Lintott on 2023-09-11.
//

import SwiftUI
import WidgetKit

ryanlintott

In XCode 16.2 beta 3 the onPreferenceChange view modifier closure was changed to be @Sendable. This change caused a number of errors in my code when I try to use the value in the closure to update a view property.

I’ve attached a simple WidthReader example that shows these errors.

This change seems similar to the recent change to the alignmentGuide closure. The difference is the alignmentGuide closure is used to change the value of the alignment guide and I have no expectation of using it to update view properties. The onPreferenceChange closure returns no value and as far as I can figure the only use of it would be to modify view properties.

As a workaround I could wrap each modification in a main actor Task but I’m concerned about this somehow delaying my updates and causing visual glitches in the UI.

Ideally I would like the onPreferenceChange modifier to be annotated with @MainActor instead of @Sendable as I can’t see a use case when someone would use the value to update something off the main thread.

ryanlintott

import SwiftUI

struct ContentView: View {
    var body: some View {
        KeyboardAvoidingWithOffset()
            .keyboardHeightEnvironmentValue()
    }
}

struct KeyboardAvoidingWithOffset: View {

ryanlintott

import SwiftUI

extension View {
    /// Applies the given transform or returns the untransformed view.
    ///
    /// Useful for availability branching on view modifiers. Do not branch with any properties that may change during runtime as this will cause errors.
    /// - Parameters:
    ///   - transform: The transform to apply to the source `View`.
    /// - Returns: The view transformed by the transform.
    @ViewBuilder

ryanlintott

//
//  JustifiedTextExample2.swift
//  FrameUpExample
//
//  Created by Ryan Lintott on 2022-11-15.
//

import SwiftUI
import WidgetKit

ryanlintott

import SwiftUI

enum CustomColorScheme: Int, CaseIterable, Identifiable, Codable {
    static var defaultKey = "customColorScheme"
    static var defaultValue = CustomColorScheme.system
    
    case system = 0
    case light = 1
    case dark = 2
    

ryanlintott

struct CrashingView: View {
    @State private var items: [String] = Array(1...10).map { String("\($0)") }
    
    var body: some View {
        VStack {
            HStack {
                ForEach(items, id: \.self) { item in
                    Text(item)
                        /// Adding @Sendable to the closure fixes the crash
                        .alignmentGuide(HorizontalAlignment.center) { @Sendable d in

ryanlintott

import SwiftUI
import UIKit

struct NoClipText: UIViewRepresentable {
    typealias UIViewType = NoClipLabel
    
    let text: String
    let font: UIFont
    let clipExtension: EdgeSizes

ryanlintott

//
//  CrashingView.swift
//  CrashRemovingItem
//
//  Created by Ryan Lintott on 2024-08-13.
//

import SwiftUI

struct CrashingView: View {