YYXC_School/LN_School/Category/UIViewController+ModalPresentationStyle.m

//
//  UIViewController+ModalPresentationStyle.m
//  jiaPei
//
//  Created by 张嵘 on 2020/3/14.
//  Copyright © 2020 JCZ. All rights reserved.
//

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

static const char *rq_automaticallySetModalPresentationStyleKey;

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

- (void)setrq_automaticallySetModalPresentationStyle:(BOOL)rq_automaticallySetModalPresentationStyle {
	objc_setAssociatedObject(self, rq_automaticallySetModalPresentationStyleKey, @(rq_automaticallySetModalPresentationStyle), OBJC_ASSOCIATION_ASSIGN);
}

- (BOOL)rq_automaticallySetModalPresentationStyle {
	id obj = objc_getAssociatedObject(self, rq_automaticallySetModalPresentationStyleKey);
	if (obj) {
		return [obj boolValue];
	}
	return [self.class rq_automaticallySetModalPresentationStyle];
}

+ (BOOL)rq_automaticallySetModalPresentationStyle {
	if ([self isKindOfClass:[UIImagePickerController class]] || [self isKindOfClass:[UIAlertController class]]) {
		return NO;
	}
	return YES;
}

- (void)rq_presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion {
	if (@available(iOS 13.0, *)) {
		if (viewControllerToPresent.rq_automaticallySetModalPresentationStyle) {
			viewControllerToPresent.modalPresentationStyle = UIModalPresentationFullScreen;
		}
		[self rq_presentViewController:viewControllerToPresent animated:flag completion:completion];
	} else {
		// Fallback on earlier versions
		[self rq_presentViewController:viewControllerToPresent animated:flag completion:completion];
	}
}

- (UIModalPresentationStyle)modalPresentationStyle{
	return UIModalPresentationFullScreen;
}
@end