CODEWITHSUNDEEP
iphoneobjective-c
tranvutuan
tranvutuan

Reputation: 6109

how to disable click on back button, iphone

I am having back button and edit button on my navigation bar like below enter image description here

After clicking on the Edit button, I have

enter image description here

My question : how can I disable click on back button when I am in edit mode so that user can not go back previous screen until he or she is done.....

What I am trying is

self.navigationItem.backBarButtonItem.enabled   =   NO;

but the back button is still clickable

PS : The way I add back button to navigation bar is

self.navigationItem.hidesBackButton             =   NO;

I can hide back button but I dont want that option...

Please advice me on this issue. Any comments are welcomed here.

Upvotes: 1

Views: 2017

Answers (3)

Sulthan
Sulthan

Reputation: 130102

The best solution would be to end edit mode when you are leaving the screen, maybe displaying a confirmation alert first (UIAlertView with two buttons "Ok" and "Cancel").

However, to answer the question - you would have to create a UIButton with the same appearance as a back button (using images). Create a UIBarButtonItem with this button as its custom view and use it in leftBarButtonItem (note that backBarButtonItem cannot have custom views).

Then you would be able to set enabled to NO on that custom view.

EDIT: I was wrong. UIBarButtonItem has enabled property. The problem with disabling the back button was there probably because you were disabling backBarButtonItem on the wrong navigationItem. The back button is always defined by the previous controller in the stack.

Upvotes: 2

3lvis
3lvis

Reputation: 4180

If the button is blocked maybe you should hide it. Because in my point of view having a unresponsive button is not good for the user.

- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
    [super setEditing:editing animated:animated];

    [UIView animateWithDuration:0.35f animations:^{
        self.navigationItem.hidesBackButton = editing;       
    }];
}

Upvotes: 1

Manikandan
Manikandan

Reputation: 4388

self.navigationItem.backBarButtonItem.enabled = NO;

Where you put the above code. place the above code in edit button's IBAction method.

Upvotes: 0

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