iPhone：导航栏“返回”按钮可点击=否？

Question

I know that we can hide navigation bar "back" button. But I dont whant to hide it? Is there any way to make it just not clickable ?

Answer 1

You can not disable the backBarButtonItem . Setting enabled property of backBarButtonItem to NO doesn't actually disables it.

It seems Apple prevented others("us") from disabling backBarButtonItem , even it ignores the target and action set to backBarButtonItem .

Answer 2

try this

    self.navigationItem.leftBarButtonItem.enabled=NO;

    self.navigationItem.backBarButtonItem.enabled=NO;

Update:

It seems to be Apple doesn't allow the back button to enable / disable. Instead of that we can hide it.

    self.navigationItem.hidesBackButton = YES;

Answer 3

self.navigationItem.backBarButtonItem.enabled = NO;

Answer 4

Disable:

self.navigationItem.leftBarButtonItem.enabled = NO;

Enable:

self.navigationItem.backBarButtonItem.enabled = YES;

Answer 5

The default cancel button cannot be disabled as Apple does not allow this feature.

Answer 6

This doesn't work with the default back button.but it's possible to hide the default back button [self.navigationItem setHidesBackButton:YES];

Answer 7

Apple does not want you to disable it but you can hide it of course.

self.navigationItem.hidesBackButton = YES;

This especially works well if you have a custom UIBarButtonItem as a button.

In stock applications you would notice features that are not applicable are hidden altogether rather than disabled.

Answer 8

Yes, you can disable that button, just setenabled property of that button to NO.

Answer 9

Should be possible to disable the button:

backButton.enabled = NO;