目前，我有这个停止调整窗口大小：
#if targetEnvironment(macCatalyst)
windowScene.sizeRestrictions?.minimumSize = CGSize(width: 480, height: 900)
windowScene.sizeRestrictions?.maximumSize = CGSize(width: 480, height: 900)
#endif
let window = UIWindow(windowScene: windowScene)
window.rootViewController = UIHostingController(rootView: contentView)
self.window = window
window.makeKeyAndVisible()
但 全屏 按钮无论如何都会使其全屏显示。
【问题讨论】：
标签： swift macos swiftui mac-catalyst
这是另一种不需要 Objective-C、选择器或异步调用的方法。它也不需要目标宏，iOS 将简单地跳过if let NSApplication。将其粘贴到首先出现的视图控制器中。请注意，这会禁用所有窗口上的绿色全屏按钮。如果您想与众不同，请使用 Asperi 的 Swift 部分的想法。
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
func bitSet(_ bits: [Int]) -> UInt {
return bits.reduce(0) { $0 | (1 << $1) }
}
func property(_ property: String, object: NSObject, set: [Int], clear: [Int]) {
if let value = object.value(forKey: property) as? UInt {
object.setValue((value & ~bitSet(clear)) | bitSet(set), forKey: property)
}
}
// disable full-screen button
if let NSApplication = NSClassFromString("NSApplication") as? NSObject.Type,
let sharedApplication = NSApplication.value(forKeyPath: "sharedApplication") as? NSObject,
let windows = sharedApplication.value(forKeyPath: "windows") as? [NSObject]
{
for window in windows {
let resizable = 3
property("styleMask", object: window, set: [], clear: [resizable])
let fullScreenPrimary = 7
let fullScreenAuxiliary = 8
let fullScreenNone = 9
property("collectionBehavior", object: window, set: [fullScreenNone], clear: [fullScreenPrimary, fullScreenAuxiliary])
}
}
}
【讨论】：
let resizable = 3 我把它改成了 4 当他们点击绿色按钮时，它会变成我设置的最大尺寸，而不是全屏，因为当它是3 无法调整大小。不知道这些数字是什么意思，我尝试了几个数字，直到找到我喜欢的。
这有点复杂，但可能。这是一种方法（我删除了所有目标宏以简化帖子）。
结果：
代码：
// on next event after UIWindow has made key it is possible to find NSWindow in runtime
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
...
window.makeKeyAndVisible()
DispatchQueue.main.async { // < wait for NSWindow available
SilentBridge.disableCloseButton(for: self.nsWindow(from: window))
}
}
// added helper function to SceneDelegate to find NSWindow
func nsWindow(from window: UIWindow) -> NSObject? {
guard let nsWindows = NSClassFromString("NSApplication")?.value(forKeyPath: "sharedApplication.windows") as? [NSObject] else { return nil }
for nsWindow in nsWindows {
let uiWindows = nsWindow.value(forKeyPath: "uiWindows") as? [UIWindow] ?? []
if uiWindows.contains(window) {
return nsWindow
}
}
return nil
}
Objective-C 部分是首选（使用未声明的选择器更简单）。通过 Xcode 模板添加新的 Objective-C 类并确认创建桥。之后需要在生成的*-Bridging-Header.h 中添加下面的类头文件，一切都应该工作。
// SilentBridge.h
@import Foundation;
@interface SilentBridge : NSObject
+ (void)disableCloseButtonFor:(NSObject * _Nullable)window;
@end
// SilentBridge.m
#import "SilentBridge.h"
@import Foundation;
// Forward declarations to allow direct calls in below method
@interface NSObject(SilentBridge)
- (id)standardWindowButton:(NSInteger)value;
- (void)setEnabled:(BOOL)flag;
@end
@implementation SilentBridge
+ (void)disableCloseButtonFor:(NSObject *)window {
if ([window respondsToSelector:@selector(standardWindowButton:)]) {
id closeButton = [window standardWindowButton:2];
if ([closeButton respondsToSelector:@selector(setEnabled:)]) {
[closeButton setEnabled:NO];
}
}
}
@end
【讨论】：