ios13 点返回按钮闪退问题

[bingolib]

• (BOOL)navigationBar:(UINavigationBar *)navigationBar shouldPopItem:(UINavigationItem *)item {
  if ([[UIDevice currentDevice].systemVersion doubleValue] >= 13.0) {
  return YES;
  }else{
  __weak typeof (self) weakSelf = self;
  id coor = [self.topViewController transitionCoordinator];
  if ([coor initiallyInteractive] == YES) {
  NSString *sysVersion = [[UIDevice currentDevice] systemVersion];
  if ([sysVersion floatValue] >= 10) {
  if (@available(iOS 10.0, *)) {
  [coor notifyWhenInteractionChangesUsingBlock:^(id _Nonnull context) {
  __strong typeof (self) pThis = weakSelf;
  [pThis dealInteractionChanges:context];
  }];
  } else {
  // Fallback on earlier versions
  }
  } else {
  [coor notifyWhenInteractionEndsUsingBlock:^(id _Nonnull context) {
  __strong typeof (self) pThis = weakSelf;
  [pThis dealInteractionChanges:context];
  }];
  }
  return YES;
  }

    NSUInteger itemCount = self.navigationBar.items.count;
    NSUInteger n = self.viewControllers.count >= itemCount ? 2 : 1;
    UIViewController *popToVC = self.viewControllers[self.viewControllers.count - n];
    [self popToViewController:popToVC animated:YES];
    return YES;
  

  }
  }

[miaoruiyuan]

同问

[Mac-sir]

请问楼上的解决了么？

[CQxiaogang]

同问

[kasumar]

在iOS 13上，[self popViewControllerAnimated:YES]; 这句就不要执行了，可以这么写：
if (!@available(iOS 13.0, *)) { [self popViewControllerAnimated:YES]; }

[IIIOS]

同问

[dte2mdj]

pop放主线程即可

//    WRNavigationBar.m
//   - (BOOL)navigationBar: shouldPopItem: 方法
dispatch_async(dispatch_get_main_queue(), ^{
        [self popToViewController:popToVC animated:YES];
});

[MrStock007]

pop放主线程即可

//    WRNavigationBar.m
//   - (BOOL)navigationBar: shouldPopItem: 方法
dispatch_async(dispatch_get_main_queue(), ^{
        [self popToViewController:popToVC animated:YES];
});

确实好使，非常感谢

[yjjwxq]

有没有彻底解决这个问题的？

[miaoruiyuan]

有 全局搜索 - (BOOL)navigationBar:(UINavigationBar *)navigationBar shouldPopItem:(UINavigationItem *)item 这个方法 iOS 13需要单独在处理 如果没有特殊需求 直接返回yes

[miaoruiyuan]

`- (BOOL)navigationBar:(UINavigationBar *)navigationBar shouldPopItem:(UINavigationItem *)item {

if (@available(iOS 13.0, *)) {
    return YES;
}
id<UIViewControllerTransitionCoordinator> transitionCoordinator = self.topViewController.transitionCoordinator;
if (transitionCoordinator && transitionCoordinator.initiallyInteractive) {
    // 滑动手势
    if (@available(iOS 10.0, *)) {
        [transitionCoordinator notifyWhenInteractionChangesUsingBlock:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {
            [self dealInteractionChangesWithContext:context];
        }];
    } else {
        [transitionCoordinator notifyWhenInteractionChangesUsingBlock:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {
            [self dealInteractionChangesWithContext:context];
        }];
    }
} else {
    
    
    
    
    BOOL shouldPop = YES;
    UIViewController* vc = [self topViewController];
    if([vc respondsToSelector:@selector(navigationShouldPopOnBackButton)]) {
        shouldPop = [vc navigationShouldPopOnBackButton];
        if(shouldPop) {
            NSInteger idx = self.viewControllers.count >= self.navigationBar.items.count ? 2 : 1;
            UIViewController *popToVC = self.viewControllers[self.viewControllers.count - idx];
            
            [self popToViewController:popToVC animated:YES];
        }else{
            return NO;
        }
    }else{
        NSInteger idx = self.viewControllers.count >= self.navigationBar.items.count ? 2 : 1;
        UIViewController *popToVC = self.viewControllers[self.viewControllers.count - idx];
        
        [self popToViewController:popToVC animated:YES];
    }
    
}
return YES;

}`

[XuYoujin]

第一种可以用...

[changpk]

pop放主线程即可

//    WRNavigationBar.m
//   - (BOOL)navigationBar: shouldPopItem: 方法
dispatch_async(dispatch_get_main_queue(), ^{
        [self popToViewController:popToVC animated:YES];
});

这样做的具体原因是什么

[FireG]

pop放主线程即可

//    WRNavigationBar.m
//   - (BOOL)navigationBar: shouldPopItem: 方法
dispatch_async(dispatch_get_main_queue(), ^{
        [self popToViewController:popToVC animated:YES];
});

为什么这样做

[danmingyang]

感谢dispatch_async