[英]Swift UIApplication not in scope
I want to change isIdleTimerDisabled when a specific view appears.我想在出现特定视图时更改 isIdleTimerDisabled。 In SwiftUI I use
.onAppear { UIApplication.shared.isIdleTimerDisabled = true }.onDisappear { UIApplication.shared.isIdleTimerDisabled = false }
but even with import UIKit
I get the warning "Cannot find 'UIApplication' in scope".在 SwiftUI 中,我使用
.onAppear { UIApplication.shared.isIdleTimerDisabled = true }.onDisappear { UIApplication.shared.isIdleTimerDisabled = false }
但即使使用import UIKit
我也会收到警告“无法在范围内找到‘UIApplication’”。 How can I fix that?我该如何解决? I didn't find a solution after searching for more than an hour.
找了一个多小时也没找到解决办法。
You should not need to import UIKit
, it should work with SwiftUI
.您不需要导入
UIKit
,它应该与SwiftUI
一起使用。
The problem may be your target.问题可能是您的目标。 Is the file used only on an iOS or iPadOS application target?
该文件是否仅用于 iOS 或 iPadOS 应用程序目标?
Or is it also used, for instance, in an extension, like ShareExtension, and so on?或者它是否也用于 ShareExtension 等扩展中?
If it is, you cannot access UIApplication
within your code.如果是,则无法在代码中访问
UIApplication
。 If this code is shared between extensions and app, you should use conditional compilation to avoid this problem.如果此代码在扩展程序和应用程序之间共享,则应使用条件编译来避免此问题。
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