iOS 应用程序中未显示嵌入式 Unity 应用程序

Question

我目前有一个 iOS 应用程序，并希望将 Unity 应用程序作为子视图嵌入到我的应用程序中。在过去的几个月里，我一直在努力解决这个问题。

一段时间以来我在构建应用程序时遇到问题，但现在它正在构建并且运行正常（几乎）。我希望 Unity 应用程序在其中显示的视图没有显示任何内容。

作为参考，我正在使用 Unity 2019.1.12f1 和 XCode 10.3

我没有使用 Vuforia，它只是一个非常基本的 Unity 应用程序，带有模型和基本动画。

我的 AppDelegate 文件是：

 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {

 var window: UIWindow?

 var application: UIApplication?


 @objc var currentUnityController: UnityAppController!

 var isUnityRunning = false

 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
     self.application = application
     unity_init(CommandLine.argc, CommandLine.unsafeArgv)

     currentUnityController = UnityAppController()
     currentUnityController.application(application, didFinishLaunchingWithOptions: launchOptions)

     // first call to startUnity will do some init stuff, so just call it here and directly stop it again
     startUnity()
     stopUnity()


     return true
 }

 func applicationWillResignActive(_ application: UIApplication) {f isUnityRunning {
         currentUnityController.applicationWillResignActive(application)
     }
 }

 func applicationDidEnterBackground(_ application: UIApplication) {
     if isUnityRunning {
         currentUnityController.applicationDidEnterBackground(application)
     }
 }

 func applicationWillEnterForeground(_ application: UIApplication) {
     if isUnityRunning {
         currentUnityController.applicationWillEnterForeground(application)
     }
 }

 func applicationDidBecomeActive(_ application: UIApplication) {

     if isUnityRunning {
         currentUnityController.applicationDidBecomeActive(application)
     }
 }

 func applicationWillTerminate(_ application: UIApplication) {
     if isUnityRunning {
         currentUnityController.applicationWillTerminate(application)
     }

 }


 func startUnity() {
     if !isUnityRunning {
         isUnityRunning = true
         currentUnityController.applicationDidBecomeActive(application!)
     }
 }

 func stopUnity() {
     if isUnityRunning {
         currentUnityController.applicationWillResignActive(application!)
         isUnityRunning = false
     }
 }

然后我使用这段代码在子视图中显示 Unity 代码

 let appDelegate = UIApplication.shared.delegate as! AppDelegate
 appDelegate.startUnity()
 self.unityView = UnityGetGLView()

我完全不明白为什么这不起作用。任何帮助将不胜感激。

希望这些信息足够了。如果您还有其他需要了解的，请告诉我。

Answer 1

您的代表看起来一切正常，但您的 ViewController 缺少一些部分。试试这个代码：

import UIKit

class UnityViewController: UIViewController {

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        if let appDelegate = UIApplication.shared.delegate as? AppDelegate {
            appDelegate.startUnity()
            showUnitySubView()
        }
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)

        if let appDelegate = UIApplication.shared.delegate as? AppDelegate {
            appDelegate.stopUnity()
        }
    }

    func showUnitySubView() {
        if let unityView = UnityGetGLView() {
            // insert subview at index 0 ensures unity view is behind current UI view
            view?.insertSubview(unityView, at: 0)

            unityView.translatesAutoresizingMaskIntoConstraints = false
            let views = ["view": unityView]
            let w = NSLayoutConstraint.constraints(withVisualFormat: "|-0-[view]-0-|", options: [], metrics: nil, views: views)
            let h = NSLayoutConstraint.constraints(withVisualFormat: "V:|-64-[view]-49-|", options: [], metrics: nil, views: views)
            view.addConstraints(w + h)
        }
    }
}

iOS 应用程序中未显示嵌入式 Unity 应用程序

Embedded Unity Application not displaying in iOS app

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unity3d

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swift