Swift: App in portrait mode - How can I set landscape mode only for one Controller/View/Page?

Question

Created Sep ’20

Replies 1

Boosts 0

Views 2.5k

Participants 1

Hi there,

I use SafariServices to show a webpage. So the challenge is to use the landscape mode only with the SafariController.

Code Block import SafariServices
let config = SFSafariViewController.Configuration()
config.entersReaderIfAvailable = true
config.barCollapsingEnabled = false
let vc = SFSafariViewController(url: url, configuration: config)
present(vc, animated: true)

In the project settings the "Device Orientation" is set to "Portrait".

Do someone know a solution for this?

Answered by LuminiCode in 636802022

I've developed the following solution:

The Device Orientation in the Deployment Info in the settings is not set (no checkbox is checked).
AppDelegate: the one controller in this case is "SFSafariViewController"

Code Block //rotation 1
func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
if let rootViewController = self.topViewControllerWithRootViewController(rootViewController: window?.rootViewController) {
print(rootViewController)
if (rootViewController is SFSafariViewController) {
// Unlock landscape view orientations for this view controller
print("unlock")
return .allButUpsideDown;
} 
}
//Only allow portrait (standard behaviour)
return .portrait;
}
    
    
//rotation 2
private func topViewControllerWithRootViewController(rootViewController: UIViewController!) -> UIViewController? {
if (rootViewController == nil) { return nil }
if (rootViewController.isKind(of: UITabBarController.self)) {
return topViewControllerWithRootViewController(rootViewController: (rootViewController as! UITabBarController).selectedViewController)} else if (rootViewController.isKind(of: UINavigationController.self)) {
return topViewControllerWithRootViewController(rootViewController: (rootViewController as! UINavigationController).visibleViewController)
} else if (rootViewController.presentedViewController != nil) {
return topViewControllerWithRootViewController(rootViewController: rootViewController.presentedViewController)
}
return rootViewController
}

3. Programmatically created SFSafariViewController in the ViewController:

Code Block import SafariServices
let url = URL(string : file_url)!
let config = SFSafariViewController.Configuration()
config.entersReaderIfAvailable = true
config.barCollapsingEnabled = false
let vc = SFSafariViewController(url: url, configuration: config)
present(vc, animated: true)

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Answer 1

LuminiCode OP

Sep ’20

Accepted Answer

I've developed the following solution:

The Device Orientation in the Deployment Info in the settings is not set (no checkbox is checked).
AppDelegate: the one controller in this case is "SFSafariViewController"

Code Block //rotation 1
func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
if let rootViewController = self.topViewControllerWithRootViewController(rootViewController: window?.rootViewController) {
print(rootViewController)
if (rootViewController is SFSafariViewController) {
// Unlock landscape view orientations for this view controller
print("unlock")
return .allButUpsideDown;
} 
}
//Only allow portrait (standard behaviour)
return .portrait;
}
    
    
//rotation 2
private func topViewControllerWithRootViewController(rootViewController: UIViewController!) -> UIViewController? {
if (rootViewController == nil) { return nil }
if (rootViewController.isKind(of: UITabBarController.self)) {
return topViewControllerWithRootViewController(rootViewController: (rootViewController as! UITabBarController).selectedViewController)} else if (rootViewController.isKind(of: UINavigationController.self)) {
return topViewControllerWithRootViewController(rootViewController: (rootViewController as! UINavigationController).visibleViewController)
} else if (rootViewController.presentedViewController != nil) {
return topViewControllerWithRootViewController(rootViewController: rootViewController.presentedViewController)
}
return rootViewController
}

3. Programmatically created SFSafariViewController in the ViewController:

Code Block import SafariServices
let url = URL(string : file_url)!
let config = SFSafariViewController.Configuration()
config.entersReaderIfAvailable = true
config.barCollapsingEnabled = false
let vc = SFSafariViewController(url: url, configuration: config)
present(vc, animated: true)

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