迅速:

将此添加到控制器中

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationItem.setHidesBackButton(true, animated: false)
}

不要忘记你需要在具有nav控制器的对象上调用它。例如，如果你有一个nav控制器在一个带有RootViewController的标签栏控制器上按下按钮，在RootViewController上调用self.navigationItem.hidesBackButton = YES将什么都不会做。你需要调用self。tabbarcontroller。navigationitem。hidesbackbutton = YES

将此代码添加到视图控制器中

UIView *myView = [[UIView alloc] initWithFrame: CGRectMake(0, 0, 300, 30)];
UIBarButtonItem *btnL = [[UIBarButtonItem alloc]initWithCustomView:myView];
self.navigationItem.leftBarButtonItem = btnL;

别忘了，我们现在有滑动到后退的手势。你可能也想把这个去掉。如果有必要，不要忘记重新启用它。

if ([self.navigationItem respondsToSelector:@selector(hidesBackButton)]) {
    self.navigationItem.hidesBackButton = YES;
}

if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
    self.navigationController.interactivePopGestureRecognizer.enabled = NO;
}

objective - c: self.navigationItem.hidesBackButton = YES;

迅速: navigationItem。hidesBackButton = true

使用代码:

 self.navigationItem.backBarButtonItem=nil;