导航栏闪问题神坑

这个重要是接上一篇文章:

我的问题如下:

1界面

push到下一个界面

简单说就是,首页导航栏隐藏,进入到下一个界面,显示导航栏,同时要把底部的tabbar隐藏,好简单的需求.

我的做法如下(部分代码):

#import "ViewController.h"
#import "NextVC.h"
@interface ViewController ()

@end

@implementation ViewController


- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [self.navigationController setNavigationBarHidden:YES animated:NO];
}

- (void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];
     [self.navigationController setNavigationBarHidden:NO animated:NO];
}



- (void)viewDidLoad {
    [super viewDidLoad];
    
    UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(100, 300, 100, 30)];
    btn.backgroundColor = [UIColor orangeColor];
    [btn addTarget:self action:@selector(goNextVC) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btn];
    
    UIImageView *headbackImgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 375, 150)];
    headbackImgView.clipsToBounds = YES;
    headbackImgView.image = [UIImage imageNamed:@"infoBackground"];
    headbackImgView.contentMode = UIViewContentModeScaleAspectFill;
    [self.view addSubview:headbackImgView];
    
    
    
}
-(void)goNextVC{
    
    NextVC *nextVC = [[NextVC alloc] init];
    /*
     坑点: hidesBottomBarWhenPushed 会导致导航栏闪一下;
     */
    nextVC.hidesBottomBarWhenPushed  = YES;
    [self.navigationController pushViewController:nextVC animated:YES];
    
}

看到这个代码,感觉好像没啥问题啊;然而,hidesBottomBarWhenPushed有坑,会导致下一级界面的导航栏闪一下.

之前没发现是这个hidesBottomBarWhenPushed属性设置导致的,所以解决办法也不相同;

解决办法

我唯一验证通过的办法是,通过XIB去设置,如下:

image.png

把这个勾上,就不需要代码设置了,bug也完美解决;

遗留问题:

如果没有用xib的咋办? 好吧,我也不知道,没找到对应的解决办法;🤣🤣🤣