CODEWITHSUNDEEP
iosmacosmac-catalystuikitformac
marcelosalloum
marcelosalloum

Reputation: 3531

Can I disable the window resizing feature on my Mac Catalyst iOS app

I'm migrating my iOS app to support MacCatalyst but I'd like to prevent the window from being resized by the user.

Do you have any tips for that?

Upvotes: 5

Views: 3723

Answers (5)

marcelosalloum
marcelosalloum

Reputation: 3531

Since Xcode11 Beta 5, the UIWindowScene class started supporting the property sizeRestrictions.

If you set sizeRestrictions.maximumSize and sizeRestrictions.minimumSize to the same value, the window will not be resizable. To do so, just call this in your application:didFinishLaunchingWithOptions method (if you're using UIKit):

    UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }.forEach { windowScene in
        windowScene.sizeRestrictions?.minimumSize = CGSize(width: 480, height: 640)
        windowScene.sizeRestrictions?.maximumSize = CGSize(width: 480, height: 640)
        windowScene.sizeRestrictions?.allowsFullScreen = false // optional
    }

If you're using SwiftUI instead of UIKit, you should actually add it to scene(_:willConnectTo:options:) in your scene delegate.

Note: You need to run this in OSX 10.15 Beta 5 or later, otherwise it will crash

Upvotes: 13

Salvador
Salvador

Reputation: 123

Steve gave me the answer. Also add disable fullscreen

WindowGroup {
    ContentView()
    .onReceive(NotificationCenter.default.publisher(for: UIScene.willConnectNotification)) { _ in
        #if targetEnvironment(macCatalyst)
        // prevent window in macOS from being resized down
        UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }.forEach { windowScene in
            windowScene.sizeRestrictions?.minimumSize = CGSize(width: 800, height: 1000)
            windowScene.sizeRestrictions?.maximumSize = CGSize(width: 800, height: 1000)
            windowScene.sizeRestrictions?.allowsFullScreen = false
        }
        #endif
    }
}

Upvotes: 1

Adrenalinevictim
Adrenalinevictim

Reputation: 81

for Objective-C try

for (UIScene* scene in UIApplication.sharedApplication.connectedScenes) {
    if ([scene isKindOfClass:[UIWindowScene class]]) {
        UIWindowScene* windowScene = (UIWindowScene*) scene;
        windowScene.sizeRestrictions.minimumSize = CGSizeMake(480, 640);
    }
}

Upvotes: 1

Steve
Steve

Reputation: 89

In a SwiftUI App lifecycle this worked for me:

import SwiftUI

@main
struct MyApp: App {

  @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
  
  var userSettings = UserSettings()
  
  var body: some Scene {
    WindowGroup {
      ContentView()
        .environmentObject(userSettings)
        .environmentObject(KeyboardManager())
        .onOpenURL(perform: { url in
          let verificationCode = url.lastPathComponent
          log.info("🔢 Verification Code: \(verificationCode)")
          userSettings.verificationCode = verificationCode
        })
      .onReceive(NotificationCenter.default.publisher(for: UIScene.willConnectNotification)) { _ in
        #if targetEnvironment(macCatalyst)
        // prevent window in macOS from being resized down
          UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }.forEach { windowScene in
            windowScene.sizeRestrictions?.minimumSize = CGSize(width: 800, height: 1000)
          }
        #endif
      }
    }
  }
}

Upvotes: 4

user1531352
user1531352

Reputation:

In the file, SceneDelegate.swift, add this:

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
    // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
    // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
    UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }.forEach { windowScene in
        windowScene.sizeRestrictions?.minimumSize = CGSize(width: 1268, height: 880)
        windowScene.sizeRestrictions?.maximumSize = windowScene.sizeRestrictions!.minimumSize
    }
    
    guard let _ = (scene as? UIWindowScene) else { return }
}

Upvotes: 0

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