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;

隐藏返回按钮与波纹代码…

[self.navigationItem setHidesBackButton:YES animated:YES];

or

[self.navigationItem setHidesBackButton:YES];

此外，如果你有自定义UINavigationBar，然后尝试下面的代码

self.navigationItem.leftBarButtonItem = nil;

最好的方法是将它们结合起来，所以即使你手动设置它，它也会隐藏后退按钮:

self.navigationItem.leftBarButtonItem=nil;
self.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;

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

使用代码:

 self.navigationItem.backBarButtonItem=nil;