JSJP_Student/jiaPei/Utils/Category/QMUI/QMUIImagePreviewViewController+RQExtension.m

//
//  QMUIImagePreviewViewController+RQExtension.m
//  jiaPei
//
//  Created by 张嵘 on 2022/9/14.
//  Copyright © 2022 JCZ. All rights reserved.
//

#import "QMUIImagePreviewViewController+RQExtension.h"
#import <objc/runtime.h>

@implementation QMUIImagePreviewViewController (RQExtension)

+ (void)load {
    // 方法交换，为的是当系统调用viewDidLoad时候，调用的是我们的my_viewDidLoad方法
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        Class class = [self class];
        SEL originalSelector = @selector(cancelDismissingGesture);
        SEL swizzledSelector = @selector(my_cancelDismissingGesture);
        Method originalMethod = class_getInstanceMethod(class, originalSelector);
        Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);
        BOOL success = class_addMethod(class, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod));
        if (success) {
            class_replaceMethod(class, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod));
        } else {
            method_exchangeImplementations(originalMethod, swizzledMethod);
        }
    });
}
 
// 手势判定失败，恢复到手势前的状态
- (void)my_cancelDismissingGesture {
    @weakify(self)
    self.statusBarHidden = YES;
    [UIView animateWithDuration:.2 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
        @strongify(self)
        [self setNeedsStatusBarAppearanceUpdate];
        [self resetDismissingGesture];
    } completion:NULL];
}

@end