现在，我正在使用SceneKit DebugOptions。
我正在尝试使用Popover ViewController中的开关控制器实时更新/显示Scenekits调试选项。
我已经尝试了很多方法，例如UserDefaults，Delegate和Protocols，但是直到每次我不得不终止该应用程序并重新启动以查看结果时，我都无法实时看到结果。
所以，如果有人能回答我的问题，我会很高兴的：D
我添加到MainVC的扩展
extension ViewController: UIPopoverPresentationControllerDelegate, DebugOptions {
func wireFrameEnabled(enabled: Bool) {
if enabled == true {
print(enabled)
}
}
func showCameraEnabled(enabled: Bool) {
}
func showAllDebugOptions(enabled: Bool) {
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
guard let popoverController = segue.destination.popoverPresentationController, let button = sender as? UIButton else { return }
popoverController.delegate = self
popoverController.sourceRect = button.bounds
let debugMenuVC = popoverController.presentedViewController as! DebugMenuVC
debugMenuVC.delegate? = self
}
func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
return .none
}
}
协议
protocol DebugOptions {
func wireFrameEnabled(enabled: Bool)
func showCameraEnabled(enabled: Bool)
func showAllDebugOptions(enabled: Bool)
}
调试菜单VC
class DebugMenuVC: UIViewController {
@IBOutlet weak var bgView: UIView!
@IBOutlet weak var showWireFrameSwitch: UISwitch!
@IBOutlet weak var showCameraSwitch: UISwitch!
@IBOutlet weak var showAllSwitch: UISwitch!
var delegate: DebugOptions?
override func viewWillLayoutSubviews() {
preferredContentSize = CGSize(width: 150, height: 300)
}
override func viewDidLoad() {
super.viewDidLoad()
buttonCheck()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
}
@IBAction func aSwitchBtnWasPressed( _ sender: UISwitch ) {
if (sender.tag == 0) && (sender.isOn == true) {
userDefaults.set(true, forKey: SHOW_WIRE_FRAME)
delegate?.wireFrameEnabled(enabled: true)
} else if (sender.tag == 0) && (sender.isOn == false) {
userDefaults.set(false, forKey: SHOW_WIRE_FRAME)
delegate?.wireFrameEnabled(enabled: false)
}
}
func buttonCheck() {
if userDefaults.bool(forKey: SHOW_WIRE_FRAME) == true{
showWireFrameSwitch.isOn = true
} else {
showWireFrameSwitch.isOn = false
}
}
}
最佳答案
在debubMenuVC.delegate中不应为可选。那就是委派方法总是失败的原因：D
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
guard let popoverController = segue.destination.popoverPresentationController, let button = sender as? UIButton else { return }
popoverController.delegate = self
popoverController.sourceRect = button.bounds
let debugMenuVC = popoverController.presentedViewController as! DebugMenuVC
debugMenuVC.delegate? = self
}
关于swift - 从Swift 4中的Popover Viewcontroller实时更新UIViewController，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/49576431/