Question

我尝试使用新的SwiftUI框架创建一个应用，并且在预览和模拟器中都能正常工作。但是，当我连接iPhone（XR）或iPad（第六代）（均运行iOS 13 beta 2）时，该应用仅显示白色或黑色屏幕（取决于打开或关闭的暗模式）。

Xcode说'EXC_BAD_ACCESS'，所以我用Google搜索了一下，我已经尝试使用Zombie对象。没有成功

struct ContentView : View {
    var body: some View {
        NavigationView {
            List(pindata) { pin in
                NavigationButton(destination: PinDetail(pin: pin, amount: UserDefaults.standard.integer(forKey: pin.color))) {
                    PinRow(pin: pin)
                }
            }.navigationBarTitle(Text("Pins"))
        }
    }
}

该代码段的第8行出现错误“ EXC_BAD_ACCESS”。

我希望该应用程序能够像在模拟器中一样运行，但是我在控制台中收到此错误：

2019-06-19 17:32:59.083958+0200 Pins[894:85155] [Assert] COMPATIBILITY BUG IN CLIENT OF UIKIT: Moving method canvasToolbar from UICanvas to UIWindowScene
2019-06-19 17:32:59.084270+0200 Pins[894:85155] [Assert] Registering Canvas Component Class _UICanvasUserActivityManager, please update to Frame Components
2019-06-19 17:32:59.089296+0200 Pins[894:85155] [Assert] Calling deprecated SPI on UICanvas. This method and class will dissapear prior to GM
2019-06-19 17:32:59.091533+0200 Pins[894:85155] [TraitCollection] Class _UISheetPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.
2019-06-19 17:32:59.091575+0200 Pins[894:85155] [TraitCollection] Class _UIRootPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.
2019-06-19 17:32:59.103592+0200 Pins[894:85155] [TraitCollection] Class UIPopoverPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.
(lldb)

应用程序可在模拟器和预览中启动，但不能在真实的iPhone或iPad上启动

0 个答案: