ios - 在 swift 中加载关于方向变化的 xib View

Question

我正在尝试让我的键盘 View 打开方向更改 - 我在 .xib 中的 View 与 @IBOutlet 连接，然后我在 viewDidLoad() 中使用 loadInterface() 调用它们我希望我的调用viewDidLoad 会更新界面，但我认为它并没有像我想象的那样工作——它没有破坏任何东西，但它也不起作用(尽管，我从上周开始取得了很多进步。)。

我有一种感觉，这与方向改变有关......

import UIKit

class KeyboardViewController: UIInputViewController {

@IBOutlet var keyboardViewPortrait: UIView!
@IBOutlet var keyboardViewLandscape: UIView!

func loadInterface(){
    var keyboardNib = UINib(nibName: "keyboardView", bundle: nil)

    UIDevice.currentDevice().beginGeneratingDeviceOrientationNotifications()

    if self.interfaceOrientation.isLandscape {
        self.keyboardViewLandscape = keyboardNib.instantiateWithOwner(self, options: nil)[0] as UIView
        view.addSubview(self.keyboardViewLandscape)
        view.backgroundColor = self.keyboardViewLandscape.backgroundColor
    }
    else if self.interfaceOrientation.isPortrait {
        self.keyboardViewPortrait = keyboardNib.instantiateWithOwner(self, options: nil)[0] as UIView
        view.addSubview(self.keyboardViewPortrait)
        view.backgroundColor = self.keyboardViewPortrait.backgroundColor
    }

    self.nextKeyboardButton.addTarget(self, action: "advanceToNextInputMode", forControlEvents: .TouchUpInside)       
}

override func viewDidLoad() {
    super.viewDidLoad()
    UIDevice.currentDevice().beginGeneratingDeviceOrientationNotifications()
    loadInterface()

    ...
}
}

*更新

我认为 rdelmar 让我走上了正确的道路，但仍然缺少一些东西。

谢谢!

Answer 1

问题是您将相同的 View 分配给 self.keyboardViewLandscape 和 self.keyboardViewPortrait(在这两种情况下，这是您从 keyboardNib.instantiateWithOwner(self, options: nil)[0] 获得的 View )。其中一个属性应分配给索引为 1 的对象。此外，最好使用处理旋转的新方法 viewWillTransitionToSize:withTransitionCoordinator:。添加新 View 时，您还需要删除以前的 View 。

class ViewController: UIViewController {

    var keyboardViewPortrait: UIView!
    var keyboardViewLandscape: UIView!
    var keyboardNib = UINib(nibName: "keyboardView", bundle: nil)

    override func viewDidLoad() {
        super.viewDidLoad()
        self.keyboardViewPortrait = keyboardNib.instantiateWithOwner(self, options: nil)[0] as UIView
        view.addSubview(self.keyboardViewPortrait)
        view.backgroundColor = self.keyboardViewPortrait.backgroundColor
    }

    override func viewWillTransitionToSize(size: CGSize, withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator){

        if size.width > size.height {
            self.keyboardViewPortrait.removeFromSuperview()
            self.keyboardViewLandscape = keyboardNib.instantiateWithOwner(self, options: nil)[1] as UIView
            view.addSubview(self.keyboardViewLandscape)
            view.backgroundColor = self.keyboardViewLandscape.backgroundColor
        }
        else {
            self.keyboardViewLandscape.removeFromSuperview()
            self.keyboardViewPortrait = keyboardNib.instantiateWithOwner(self, options: nil)[0] as UIView
            view.addSubview(self.keyboardViewPortrait)
            view.backgroundColor = self.keyboardViewPortrait.backgroundColor
        }
    }
}