runtime方法全局解决iOS13模态试图不全屏显示问题

给UIViewController添加分类SKPModel

1.分类的.h文件

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface UIViewController (SKPModel)

@end

NS_ASSUME_NONNULL_END

2.分类的.m文件

#import "UIViewController+SKPModel.h"
#import <objc/runtime.h>


@implementation UIViewController (SKPModel)


+(void)load{
       Method m1 = class_getInstanceMethod([self class], @selector(presentViewController:animated:completion:));
       Method m2 = class_getInstanceMethod([self class], @selector(skp_presentViewController:animated:completion:));
       method_exchangeImplementations(m1, m2);
}
- (void)skp_presentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^ __nullable)(void))completion{
    viewControllerToPresent.modalPresentationStyle =  UIModalPresentationFullScreen;
    [self skp_presentViewController:viewControllerToPresent animated:flag completion:completion];
}
@end