ios 13 全局修改 present 卡片式

更新iOS 13之后，发现我们工程模态展示的视图默认是非全屏的。在iOS13前，该值默认为UIModalPresentationFullScreen。而在 iOS13 中默认值变为了UIModalPresentationAutomatic。如果考虑到全工程一一在present前加一句vc.modalPresentationStyle = UIModalPresentationFullScreen; 麻烦， 可以全局处理

UIViewController+Present.h

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface UIViewController (Present)
- (void)KJ_presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion;

@end

NS_ASSUME_NONNULL_END

UIViewController+Present.m

#import "UIViewController+Present.h"
#import<objc/runtime.h>
@implementation UIViewController (Present)

+ (void)load {
    Method originAddObserverMethod = class_getInstanceMethod(self, @selector(presentViewController:animated:completion:));
    Method swizzledAddObserverMethod = class_getInstanceMethod(self, @selector(KJ_presentViewController:animated:completion:));
    method_exchangeImplementations(originAddObserverMethod, swizzledAddObserverMethod);
}

- (void)KJ_presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion {
    if (@available(iOS 13.0, *)) {
        if (viewControllerToPresent.modalPresentationStyle == UIModalPresentationPageSheet) {
            viewControllerToPresent.modalPresentationStyle = UIModalPresentationFullScreen;
        }
    }
    [self KJ_presentViewController:viewControllerToPresent animated:flag completion:completion];
}
@end