我有一个带有一个横向ViewController的肖像应用程序。
当应用程序被锁定为肖像时,我已经开始大量研究如何强制定位到横向,我尝试了很多这里提出的解决方案,不仅但到目前为止没有任何运气。
到目前为止,我设法在风景中自动旋转了我需要的VC,但由于方向没有锁定,所有其他VC也会旋转。
override func viewDidAppear(animated: Bool)
{
let value = UIInterfaceOrientation.LandscapeRight.rawValue
UIDevice.currentDevice().setValue(value, forKey: "orientation")
}
override func shouldAutorotate() -> Bool
{
return true
}
在进行了一些挖掘之后,我在找到一个示例项目之后得到了这个结果,但是当它在该项目中起作用时,它似乎并不适合我。
这是在AppDelegate
中func application(application: UIApplication, supportedInterfaceOrientationsForWindow window: UIWindow?) -> UIInterfaceOrientationMask {
if self.window?.rootViewController?.presentedViewController is ConclusionReferencesVC {
let conclusionReferencesVC = self.window!.rootViewController!.presentedViewController as! ConclusionReferencesVC
if conclusionReferencesVC.isPresented
{
return UIInterfaceOrientationMask.LandscapeRight;
}
else
{
return UIInterfaceOrientationMask.Portrait;
}
}
else
{
return UIInterfaceOrientationMask.Portrait;
}
}
这是我希望在风景中使用的VC:
var isPresented = true
@IBAction
func dismiss()
{
isPresented = false
self.presentingViewController!.dismissViewControllerAnimated(true, completion: nil);
}
由于某种原因,supportedInterfaceOrientationsForWindow方法不验证初始条件。
我也试过这些,但没有运气:
How to lock orientation of one view controller to portrait mode only in Swift
supportedInterfaceOrientationsForWindow in Swift 2.0
有什么想法吗?我似乎错过了一些东西,但我无法弄清楚是什么。
答案 0 :(得分:3)
尝试此操作仅限于LandscapeRight
模式
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
if(self.supportedInterfaceOrientations() == UIInterfaceOrientationMask.LandscapeRight && UIDevice.currentDevice().orientation != UIDeviceOrientation.LandscapeRight)
{
let value = UIInterfaceOrientation.LandscapeRight.rawValue
UIDevice.currentDevice().setValue(value, forKey: "orientation")
}
}
然后使用像这样的类别
import UIKit
extension UINavigationController{
override public func shouldAutorotate() -> Bool
{
return (self.viewControllers.last?.shouldAutorotate())!
}
override public func supportedInterfaceOrientations() ->UIInterfaceOrientationMask
{
return (self.viewControllers.last?.supportedInterfaceOrientations())!;
}
override public func preferredInterfaceOrientationForPresentation()-> UIInterfaceOrientation
{
return (self.viewControllers.last?.preferredInterfaceOrientationForPresentation())!;
}
}
如果您不使用导航控制器,请使用此
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
if(self.supportedInterfaceOrientations() == UIInterfaceOrientationMask.LandscapeRight && UIDevice.currentDevice().orientation != UIDeviceOrientation.LandscapeRight)
{
let value = UIInterfaceOrientation.LandscapeRight.rawValue
UIDevice.currentDevice().setValue(value, forKey: "orientation")
}
}
override func supportedInterfaceOrientations() ->UIInterfaceOrientationMask
{
return .LandscapeRight;
}
我希望这有助于你
答案 1 :(得分:0)
答案 2 :(得分:0)
作为Reinier Melian帖子的更新,这里是Swift 3中的UINavigationController扩展:
import UIKit
extension UINavigationController {
override open var shouldAutorotate: Bool {
return (self.viewControllers.last?.shouldAutorotate)!
}
override open var supportedInterfaceOrientations: UIInterfaceOrientationMask {
return (self.viewControllers.last?.supportedInterfaceOrientations)!
}
override open var preferredInterfaceOrientationForPresentation: UIInterfaceOrientation {
return (self.viewControllers.last?.preferredInterfaceOrientationForPresentation)!
}
}
不幸的是,如果您调用UIImagePickerController,此代码会崩溃,因为它包含在最后一个视图控制器为零的UINavigationController中。