在iOS 13 Beta 1中,出现模态视图控制器时有新行为。 现在默认情况下它不是全屏显示,当我尝试向下滑动时,该应用程序会自动关闭View Controller。
如何防止这种情况并回到旧的全屏模态vc?
谢谢
答案 0 :(得分:75)
答案 1 :(得分:65)
有多种方法可以做到这一点,我认为每个项目都可以适合一个项目,但不适合另一个项目,所以我想我将它们保留在这里,也许其他人会遇到不同的情况。
如果您有BaseViewController
,则可以覆盖present(_ viewControllerToPresent: animated flag: completion:)
方法。
class BaseViewController: UIViewController {
// ....
override func present(_ viewControllerToPresent: UIViewController,
animated flag: Bool,
completion: (() -> Void)? = nil) {
viewControllerToPresent.modalPresentationStyle = .fullScreen
super.present(viewControllerToPresent, animated: flag, completion: completion)
}
// ....
}
使用这种方式,您无需在任何present
调用中进行任何更改,因为我们只是覆盖了present
方法。
extension UIViewController {
func presentInFullScreen(_ viewController: UIViewController,
animated: Bool,
completion: (() -> Void)? = nil) {
viewController.modalPresentationStyle = .fullScreen
present(viewController, animated: animated, completion: completion)
}
}
用法:
presentInFullScreen(viewController, animated: true)
let viewController = UIViewController()
viewController.modalPresentationStyle = .fullScreen
present(viewController, animated: true, completion: nil)
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)
}
}
@objc
private 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)
}
}
用法:
在AppDelegate
内的application(_ application: didFinishLaunchingWithOptions)
中,添加以下行:
UIViewController.swizzlePresent()
使用这种方式,您无需在任何当前调用上进行任何更改,因为我们正在替换运行时中的当前方法实现。
如果您想知道什么在泛滥,可以查看以下链接:
https://nshipster.com/swift-objc-runtime/
答案 2 :(得分:30)
对于Objective-C用户
只需使用此代码
[vc setModalPresentationStyle: UIModalPresentationFullScreen];
或者如果您想在iOS 13.0中添加它,请使用
if (@available(iOS 13.0, *)) {
[vc setModalPresentationStyle: UIModalPresentationFullScreen];
} else {
// Fallback on earlier versions
}
答案 3 :(得分:22)
作为提示:如果调用存在于createdAt
中的ViewController
,则必须将NavigationController
设置为NavigationController
,而不是VC。
您可以像@davidbates一样执行此操作,也可以以编程方式(例如@pascalbros)来执行此操作。
示例场景:
.fullScreen
答案 4 :(得分:22)
最新的iOS 13和Swift 5.x
let vc = ViewController(nibName: "ViewController", bundle: nil)
vc.modalPresentationStyle = .fullScreen
self.present(vc, animated: true, completion: nil)
答案 5 :(得分:21)
如WWDC 2019期间Platforms State of the Union所述,使用iOS 13,Apple引入了新的默认卡演示文稿。为了强制全屏,您必须使用以下命令明确指定它:
let vc = UIViewController()
vc.modalPresentationStyle = .fullScreen
self.present(vc, animated: true, completion: nil)
答案 6 :(得分:21)
我在iOS 13上使用了swizzling
.date-time { display: none; }
@media screen and (min-width: 300px) {
.size-s .date-time { display: inline-block; }
}
@media screen and (min-width: 576px) {
.size-m .date-time { display: inline-block; }
}
@media screen and (min-width: 800px) {
.size-l .date-time { display: inline-block; }
}
然后放这个
import Foundation
import UIKit
private func _swizzling(forClass: AnyClass, originalSelector: Selector, swizzledSelector: Selector) {
if let originalMethod = class_getInstanceMethod(forClass, originalSelector),
let swizzledMethod = class_getInstanceMethod(forClass, swizzledSelector) {
method_exchangeImplementations(originalMethod, swizzledMethod)
}
}
extension UIViewController {
static let preventPageSheetPresentation: Void = {
if #available(iOS 13, *) {
_swizzling(forClass: UIViewController.self,
originalSelector: #selector(present(_: animated: completion:)),
swizzledSelector: #selector(_swizzledPresent(_: animated: completion:)))
}
}()
@available(iOS 13.0, *)
@objc private func _swizzledPresent(_ viewControllerToPresent: UIViewController,
animated flag: Bool,
completion: (() -> Void)? = nil) {
if viewControllerToPresent.modalPresentationStyle == .pageSheet
|| viewControllerToPresent.modalPresentationStyle == .automatic {
viewControllerToPresent.modalPresentationStyle = .fullScreen
}
_swizzledPresent(viewControllerToPresent, animated: flag, completion: completion)
}
}
某处
例如在AppDelegate中
UIViewController.preventPageSheetPresentation
答案 7 :(得分:19)
在演示前更改modalPresentationStyle
vc.modalPresentationStyle = UIModalPresentationFullScreen;
答案 8 :(得分:10)
答案 9 :(得分:9)
这是一个简单的解决方案,无需编写一行代码。
此更改使iPad应用程序具有预期的行为,否则新屏幕将在弹出窗口的中央显示。
答案 10 :(得分:9)
快速解决方案。上面已经有非常好的答案。我还添加了我的快速2点输入,该输入显示在屏幕截图中。
如果您不使用Navigation Controller
,则从Right Menu Inspector
将Presentation设置为Full Screen
如果您使用的是Navigation Controller
,则默认情况下它将以全屏显示,您无需执行任何操作。
答案 11 :(得分:7)
这是Objective-C的解决方案
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
ViewController *vc = [storyBoard instantiateViewControllerWithIdentifier:@"ViewController"];
vc.modalPresentationStyle = UIModalPresentationFullScreen;
[self presentViewController:vc animated:YES completion:nil];
答案 12 :(得分:6)
所有其他答案都足够了,但是对于像我们这样的大型项目来说,在代码和情节提要中都进行导航时,这是一项艰巨的任务。
对于那些正在积极使用Storyboard的用户。这是我的建议:使用Regex。
以下格式不适用于全屏页面:
<segue destination="Bof-iQ-svK" kind="presentation" identifier="importSystem" modalPresentationStyle="fullScreen" id="bfy-FP-mlc"/>
以下格式适合全屏页面:
<segue destination="7DQ-Kj-yFD" kind="presentation" identifier="defaultLandingToSystemInfo" modalPresentationStyle="fullScreen" id="Mjn-t2-yxe"/>
以下与VS CODE兼容的正则表达式会将所有旧样式页面转换为新样式页面。如果您使用其他正则表达式引擎/文本编辑器,则可能需要转义特殊字符。
搜索正则表达式
<segue destination="(.*)"\s* kind="show" identifier="(.*)" id="(.*)"/>
替换正则表达式
<segue destination="$1" kind="presentation" identifier="$2" modalPresentationStyle="fullScreen" id="$3"/>
答案 13 :(得分:6)
答案 14 :(得分:6)
这对我有用
`让vc = self.storyboard?.instantiateViewController(withIdentifier:“ cameraview1”)为! CameraViewController
vc.modalPresentationStyle = .fullScreen
self.present(vc, animated: true, completion: nil)`
答案 15 :(得分:5)
iOS 13及更低版本的iOS版全屏,带有
overCurrentContext
和navigationController
测试代码
let controller = UIViewController()
let navigationController = UINavigationController(rootViewController: controller)
navigationController.modalPresentationStyle = .overCurrentContext
self.navigationController?.present(navigationController, animated: true, completion: nil)
modalPresentationStyle 需要在 navigationController 上进行设置。
答案 16 :(得分:4)
答案 17 :(得分:3)
最初,modalPresentationStyle的默认值为/**
* @group table
*/
public function testVisit()
{
$this->browse(function (Browser $browser) {
$user = factory(User::class)->create(['user_type' => 'admin']);
$browser->maximize();
$browser->loginAs(factory(User::class)->create(['user_type' => 'admin']));
$browser->visit('/admin/logs');
$browser->assertTitle('talbase - User Activity');
$browser->assertSee('User Activity');
$browser->waitFor('table');
$browser->assertVisible('#user_log_list');
$browser->whenAvailable('table#user_log_list', function($table) use ($user) {
$table->pause(2000);
$table->assertSee($user->first_name);
});
$browser->pause(5000);
$browser->logout();
});
}
,但在 iOS 13 中,其默认值为fullscreen
。
如果要制作全屏视图控制器,则必须将UIModalPresentationStyle.automatic
更改为modalPresentationStyle
。
有关更多详细信息,请参见fullScreen
apple documentation,有关在何处应使用哪种模式的信息,请参见apple human interface guidelines。
答案 18 :(得分:3)
我通过使用swizzling(Swift 4.2)方法实现了此目标:
要创建如下的UIViewController扩展
extension UIViewController {
@objc private func swizzled_presentstyle(_ viewControllerToPresent: UIViewController, animated: Bool, completion: (() -> Void)?) {
if #available(iOS 13.0, *) {
if viewControllerToPresent.modalPresentationStyle == .automatic || viewControllerToPresent.modalPresentationStyle == .pageSheet {
viewControllerToPresent.modalPresentationStyle = .fullScreen
}
}
self.swizzled_presentstyle(viewControllerToPresent, animated: animated, completion: completion)
}
static func setPresentationStyle_fullScreen() {
let instance: UIViewController = UIViewController()
let aClass: AnyClass! = object_getClass(instance)
let originalSelector = #selector(UIViewController.present(_:animated:completion:))
let swizzledSelector = #selector(UIViewController.swizzled_presentstyle(_:animated:completion:))
let originalMethod = class_getInstanceMethod(aClass, originalSelector)
let swizzledMethod = class_getInstanceMethod(aClass, swizzledSelector)
if let originalMethod = originalMethod, let swizzledMethod = swizzledMethod {
method_exchangeImplementations(originalMethod, swizzledMethod)
}
}
}
以及在AppDelegate中的application:didFinishLaunchingWithOptions中:通过调用以下代码来调用混乱的代码:
UIViewController.setPresentationStyle_fullScreen()
答案 19 :(得分:2)
这是我在ObjectiveC中使用类别的修复版本。使用这种方法,您将拥有默认的UIModalPresentationStyleFullScreen行为,直到明确设置了另一个行为为止。
#import "UIViewController+Presentation.h"
#import "objc/runtime.h"
@implementation UIViewController (Presentation)
- (void)setModalPresentationStyle:(UIModalPresentationStyle)modalPresentationStyle {
[self setPrivateModalPresentationStyle:modalPresentationStyle];
}
-(UIModalPresentationStyle)modalPresentationStyle {
UIModalPresentationStyle style = [self privateModalPresentationStyle];
if (style == NSNotFound) {
return UIModalPresentationFullScreen;
}
return style;
}
- (void)setPrivateModalPresentationStyle:(UIModalPresentationStyle)modalPresentationStyle {
NSNumber *styleNumber = [NSNumber numberWithInteger:modalPresentationStyle];
objc_setAssociatedObject(self, @selector(privateModalPresentationStyle), styleNumber, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
- (UIModalPresentationStyle)privateModalPresentationStyle {
NSNumber *styleNumber = objc_getAssociatedObject(self, @selector(privateModalPresentationStyle));
if (styleNumber == nil) {
return NSNotFound;
}
return styleNumber.integerValue;
}
@end
答案 20 :(得分:2)
将 navigationController.modalPresentationStyle
设置为 .fullScreen
在这里已经重复了一千多次,但让我向您展示另一个阻止 UIViewController
/ UINavigationController
没有显示在fullscreen
即使所有属性都设置正确。
就我而言,罪魁祸首隐藏在这一行中
navigationController?.presentationController?.delegate = self
显然设置 UIAdaptivePresentationControllerDelegate
会将样式更改为 pageSheet
。
答案 21 :(得分:2)
您可以轻松地这样做
打开情节提要作为源代码并搜索kind="presentation"
,在所有带有kind = present的seague标签中添加一个额外的属性modalPresentationStyle="fullScreen"
答案 22 :(得分:2)
let Obj = MtViewController()
Obj.modalPresentationStyle = .overFullScreen
self.present(Obj, animated: true, completion: nil)
//如果要禁用滑动以关闭它,请添加行
Obj.isModalInPresentation = true
检查Apple Document以获得更多信息。
答案 23 :(得分:1)
为UIViewController创建类别(例如,UIViewController + PresentationStyle)。向其中添加以下代码。
-(UIModalPresentationStyle)modalPresentationStyle{
return UIModalPresentationStyleFullScreen;
}
答案 24 :(得分:1)
这对我有用:
yourViewController.modalPresentationStyle = UIModalPresentationStyle.fullScreen
答案 25 :(得分:0)
class MyViewController: UIViewController {
convenience init() {
self.init(nibName:nil, bundle:nil)
self.modalPresentationStyle = .fullScreen
}
override func viewDidLoad() {
super.viewDidLoad()
}
}
您可以继承UIViewController的子类,而不必在每个视图控制器上调用self.modalPresentationStyle = .fullScreen
。
答案 26 :(得分:0)
如果您正在使用UINavigationController并将ViewController嵌入为根视图控制器,那么您也会遇到同样的问题。使用以下代码来克服。
this.questions
.pipe(
map(results => {
return results.sort((a, b) => {
let res = compareString(a[column].replace(/<.*?>/g, ''),
b[column].replace(/<.*?>/g, ''));
debugger;
return direction === 'asc' ? res : -res;
})
})
).subscribe();
export const compareString = ( a, b ) => {
if ( a < b ){
return -1;
}
if ( a > b ){
return 1;
}
return 0;
}
答案 27 :(得分:0)
最适合我的解决方案。
viewController.modalPresentationStyle = .fullScreen
答案 28 :(得分:0)
我遇到了视频无法再全屏显示的问题。添加了这一行,从而节省了一天:-)
videoController.modalPresentationStyle = UIModalPresentationFullScreen;
答案 29 :(得分:0)
另一种方法是在您的应用程序中拥有您自己的基本viewcontroller组件,并仅通过基本设置来实现指定的和必需的初始化程序,如下所示:
class MyBaseViewController: UIViewController {
//MARK: Initialisers
/// Alternative initializer which allows you to set the modal presentation syle
/// - Parameter modalStyle: the presentation style to be used
init(with modalStyle:UIModalPresentationStyle) {
super.init(nibName: nil, bundle: nil)
self.setup(modalStyle: modalStyle)
}
override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
// default modal presentation style as fullscreen
self.setup(modalStyle: .fullScreen)
}
required init?(coder: NSCoder) {
super.init(coder: coder)
// default modal presentation style as fullscreen
self.setup(modalStyle: .fullScreen)
}
//MARK: Private
/// Setup the view
///
/// - Parameter modalStyle: indicates which modal presentation style to be used
/// - Parameter modalPresentation: default true, it prevent modally presented view to be dismissible with the default swipe gesture
private func setup(modalStyle:UIModalPresentationStyle, modalPresentation:Bool = true){
if #available(iOS 13, *) {
self.modalPresentationStyle = modalStyle
self.isModalInPresentation = modalPresentation
}
}
注意:如果视图控制器包含在以模态形式实际显示的导航控制器中,则导航控制器应以相同的方式解决该问题(即,自定义自定义的导航控制器组件以同样的方式
在iOS 13.1和iOS 12.4的Xcode 11.1上测试
希望有帮助
答案 30 :(得分:-1)
由于无法解决问题,我不得不将某些导航控制器切换回全屏模式。
如果我有两个设置为自动,一个被称为另一个,则第二个控制器在屏幕边缘出现,并带有右键。
第一个控制器显示如下:
如果我随后用NavigationController
搜寻到另一个ViewController
,则看起来像这样:
为什么在第二个ViewController
中,右键单击边缘而不是边缘?还要注意减小的高度。
如果我将第一个导航控制器更改为全屏,则第二个导航控制器将正确显示。
答案 31 :(得分:-1)
上面的答案和建议是正确的,下面是另一个版本,并且是通过编程有效使用的方式。
#1创建了一个UIView扩展
#2创建了方法()
//#1
extension UIViewController {
//#2
func presentLocal(_ viewControllerToPresent: UIViewController, animated flag:
Bool, completion: (() -> Void)? = nil) {
//Reusing below 2 lines :-)
viewControllerToPresent.modalPresentationStyle = .overCurrentContext
self.present(viewControllerToPresent, animated: flag, completion: completion)
}
}
按以下方式调用
let vc = MyViewController()
let nc = UINavigationController(rootViewController: vc)
sourceView.presentLocal(nc, animated: true, completion: nil)
OR
let vc = MyViewController()
sourceView.presentLocal(vc, animated: true, completion: nil)
答案 32 :(得分:-1)
在Objective-C中,我找到了两种方法。
我注意到两个枚举modalPresentationStyles都小于零
UIModalPresentationNone API_AVAILABLE(ios(7.0)) = -1,
UIModalPresentationAutomatic API_AVAILABLE(ios(13.0)) = -2,
- (void)presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion
{
if (viewControllerToPresent.modalPresentationStyle < 0){
viewControllerToPresent.modalPresentationStyle = UIModalPresentationFullScreen;
}
[super presentViewController:viewControllerToPresent animated:flag completion:completion];
}