[IOS]Presenting modal in iOS 13 fullscreen

[IOS]Presenting modal in iOS 13 fullscreen

参考: are multiple ways to do that, and I think each one could fit for one project but not another, so I thought I'll keep them here maybe someone else will run to a different case.

1- Override present

If you have a ​​BaseViewController​​​ you can override the ​​present(_ viewControllerToPresent: animated flag: completion:)​​ method.

classBaseViewController:UIViewController{// ....override func present(_ viewControllerToPresent:UIViewController, animated flag:Bool, completion:(()->Void)?=nil){ viewControllerToPresent.modalPresentationStyle =.fullScreen super.present(viewControllerToPresent, animated: flag, completion: completion)}// ....}

Using this way you don't need to do any change on any ​​present​​​ call, as we just overrode the ​​present​​ method.

2- An extension:

extension UIViewController{ func presentInFullScreen(_ viewController:UIViewController, animated:Bool, completion:(()->Void)?=nil){ viewController.modalPresentationStyle =.fullScreen present(viewController, animated: animated, completion: completion)}}

Usage:

presentInFullScreen(viewController, animated:true)

3- For one UIViewController

let viewController =UIViewController()viewController.modalPresentationStyle =.fullScreenpresent(viewController, animated:true, completion:nil)

4- From Storyboard

Select a segue and set the presentation to ​​FullScreen​​.

转存失败重新上传取消​​​​

5- Swizzling

extension UIViewController{static func swizzlePresent(){let orginalSelector =#selector(present(_: animated: completion:))let swizzledSelector =#selector(swizzledPresent) guard let orginalMethod = class_getInstanceMethod(self, orginalSelector),let swizzledMethod = class_getInstanceMethod(self, swizzledSelector)else{return}let didAddMethod = class_addMethod(self, orginalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod))if didAddMethod { class_replaceMethod(self, swizzledSelector, method_getImplementation(orginalMethod), method_getTypeEncoding(orginalMethod))}else{ method_exchangeImplementations(orginalMethod, swizzledMethod)}}@objcprivate func swizzledPresent(_ viewControllerToPresent:UIViewController, animated flag:Bool, completion:(()->Void)?=nil){if#available(iOS 13.0, *) {if viewControllerToPresent.modalPresentationStyle ==.automatic { viewControllerToPresent.modalPresentationStyle =.fullScreen }} swizzledPresent(viewControllerToPresent, animated: flag, completion: completion)}}

Usage: In your ​​​AppDelegate​​​ inside ​​application(_ application: didFinishLaunchingWithOptions)​​ add this line:

UIViewController.swizzlePresent()

共有5种方法,第一第二种都不错,第三种比较常见,如果很多地方用到present就每一个都需要设置一下,不太优雅.

第四种是要有storyboard的segue,如果代码跳转用不上.

第五种其实是最好的很优雅,而且基本对原代码没有修改.但是如果原代码是OC的话,会有问题,提示selector错误反而用不了

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