How to hide the bar button item on click of a button?

问题

in my app say i have 2 pages on click on next button(using push view controller) in page 1 it ill navigate to 2nd page , in the 2nd page i have a download(UIButton , not in the navigation bar) button , on click of that i need to hide the back button

if back button is created by us we can hide it by using the following code

self.navigationItem.leftBarButtonItem = nil;

but i am not getting how to hide that back button,,can any one help me, thanx in advance

回答1:

You can hide the back button using the following code:

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

See this answer for more details: How to hide the "back" button in UINavigationController?

回答2:

You can do...

self.navigationItem.hidesBackButton = YES;

来源：https://stackoverflow.com/questions/7202698/how-to-hide-the-bar-button-item-on-click-of-a-button