使用 SwiftUI 在 WatchOS 中实现从主控制器到基于页面的控制器的导航问题

Issues implementing navigation from a main controller to page based controllers in WatchOS using SwiftUI

我正在尝试使用 SwiftUI 做类似 的事情。到目前为止,我可以从一个主视图转到基于页面的视图,但我无法在页面视图之间滚动。

情节提要如下所示:

如您所见,故事板中没有任何 seguesnext page relationships

我正在 HC3WKHostingController(三个中的中间一个)的代码中实现这些代码。

HostingControllerHC3:

class HC3: WKHostingController<CV> {

    override func awake(withContext context: Any?) {
        super.awake(withContext: context)
        WKInterfaceController.reloadRootPageControllers(withNames: ["HC2", "HC3", "HC4"], contexts: [context] , orientation: WKPageOrientation.horizontal, pageIndex: 1)
    }
    override var body: CV {
        return CV()
    }
}

问题是我无法在基于页面的视图之间导航。

其他 HostingController 有一个 WKHostingController 类型的 class,如下所示:

class HC[#]: WKHostingController<CV> {
    override var body: CV {
        return CV()
    }
}

他们在身份检查器中分配了 classed,并且在属性检查器中也有指定的 ID。

我正在使用 NavigationLink 从主控制器导航到基于分页的控制器这是视图或主托管控制器:

struct ContentView: View {
    var body: some View {
        NavigationLink(destinationName: "HC3"){
            Text("Go to HC3")
        }
    }
}

示例:

当尝试导航到基于页面的控制器中的其他页面时,我确实在控制台中遇到了一些 错误

ComF: interfaceController for interfaceControllerID:13F0353 not found (clientIdentifier=(null))


SampleApp WatchKit Extension[319:69539] [default] -[SPRemoteInterface _interfaceControllerClientIDForControllerID:]:2358: ComF: clientIdentifier for interfaceControllerID:13F0353 not found. callStack:(
    0   WatchKit                            0x36dd72fc 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 172796
    1   WatchKit                            0x36dd90cc 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 180428
    2   WatchKit                            0x36dcf2cc spUtils_dispatchAsyncToMainThread + 40
    3   WatchKit                            0x36dd8db8 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 179640
    4   WatchKit                            0x36dcf2cc spUtils_dispatchAsyncToMainThread + 40
    5   WatchKit                            0x36dd6688 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 169608
    6   WatchKit                            0x36dd6564 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 169316
    7   WatchKit                            0x36dcd9f4 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 133620
    8   WatchKit                            0x36dd632c 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 168748
    9   WatchKit                            0x36dd623c 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 168508
    10  WatchKit                            0x36db0b74 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 15220
    11  WatchKit                            0x36dbae94 0045BA6A-0953-3B1D-915F-6ADB695CD163 + 56980
    12  UIKitCore                           0x4148aaf0 78873E50-5E9B-3AA3-A471-366668659CA2 + 9235184
    13  UIKitCore                           0x40d750ec 78873E50-5E9B-3AA3-A471-366668659CA2 + 1806572
    14  UIKitCore                           0x40d75454 78873E50-5E9B-3AA3-A471-366668659CA2 + 1807444
    15  UIKitCore                           0x40d74cf0 78873E50-5E9B-3AA3-A471-366668659CA2 + 1805552
    16  UIKitCore                           0x40d7934c 78873E50-5E9B-3AA3-A471-366668659CA2 + 1823564
    17  UIKitCore                           0x410af7f0 78873E50-5E9B-3AA3-A471-366668659CA2 + 5191664
    18  UIKitCore                           0x41185800 _UISceneSettingsDiffActionPerformChangesWithTransitionContext + 244

    .
    .
    .
    .

您的设计存在逻辑错误。 reloadRootPageController 函数应该在顶部 WKHostingController 中调用,但是 "HC3"。

 class HostingController: WKHostingController<ContentView> {

override func awake(withContext context: Any?) {
       super.awake(withContext: context)
       WKInterfaceController.reloadRootPageControllers(withNames: ["HC2", "HC3", "HC4"], contexts: [context] , orientation: WKPageOrientation.horizontal, pageIndex: 1)
   }


override var body: ContentView {
    return ContentView()
}
}

如果在HC3中调用了reloadRootPageControllers,奇怪的情况就是你遇到的

否则,您必须在 HC3 设置中添加 conditional_once。

class HC3: WKHostingController<CV> {

 static var runOnce: Bool = true

 override func awake(withContext context: Any?) {
    super.awake(withContext: context)

    if HC3.runOnce { HC3.runOnce.toggle()
     WKInterfaceController.reloadRootPageControllers(withNames: ["HC2", "HC3", "HC4"], contexts: [context] , orientation: WKPageOrientation.horizontal, pageIndex: 1)
    }

  }

override var body: CV {
    return CV()
}
 }