CODEWITHSUNDEEP
iphoneobjective-ccocoa-touchios
Stefan
Stefan

Reputation: 235

Pressing Cancel button doesn't retract

I am implementing an action sheet. When I press "ok" button, do these, press "cancel" go back. The "ok" button is working fine, but when I press the "cancel" button, nothing happens, it doesn't retract or do anything, just hang at the actionsheet view.

Below is my code:

To create button on the nav bar:

UIBarButtonItem *clearButton = [[[UIBarButtonItem alloc] initWithTitle:@"Clear     History"
                                                                      style:UIBarButtonItemStyleBordered
                                                              target:self
                                                              action:@selector(ClearHistoryAction:)] autorelease];
self.navigationItem.leftBarButtonItem = clearButton;

When I click and launch action sheet:

   - (IBAction)ClearHistoryAction:(id)sender
  {
UIActionSheet *actionSheet = [[UIActionSheet alloc]
                              initWithTitle:@"Clear History?"
                              delegate:self
                              cancelButtonTitle:@"Cancel"
                              destructiveButtonTitle:@"OK"
                              otherButtonTitles:nil];


// use the same style as the nav bar
actionSheet.actionSheetStyle = self.navigationController.navigationBar.barStyle;    

[actionSheet showInView:self.view];
    [actionSheet release];


    }

if select ok do this:

  - (void)actionSheet:(UIActionSheet *)actionSheet

 didDismissWithButtonIndex:(NSInteger) buttonIndex
  {
if (!buttonIndex == [actionSheet cancelButtonIndex])
{

    //do what i want here!
}
  }

In the header file, UIActionSheetDelegate is included in @interface.

Upvotes: 0

Views: 740

Answers (3)

Rohit Gupta
Rohit Gupta

Reputation: 408

Late but, a possible Explanation could be :

Seems to be an issue with the tabbar. If you call UIActionSheet's 

[sheet showInView:self.view]

from a view controller that is a child of a UITabViewController, then the hit testing on the cancel button fails in that portion of the UIActionSheet that lies above the tabbar's view.

If you instead pass in the UITabBarController's view, then the UIActionSheet acts as expected.

[sheet showInView:self.parentViewController.tabBarController.view];

A more detailed explanation here: UIActionSheet cancel button strange behaviour

Upvotes: 1

Steve Liddle
Steve Liddle

Reputation: 3705

You need to use showFromBarButtonItem instead of showInView. The problem is that the cancel button is being covered by another view--maybe a toolbar or tabbar--so it's not getting the touch events you think it should get. There are also showFromTabBar and showFromToolbar that should sometimes be used (see the UIActionSheet class reference).

Upvotes: 0

Jesper
Jesper

Reputation: 1

I don't know if it'll solve this problem but you'll want to do buttonIndex != [actionSheet cancelButtonIndex] (check not-equal) instead of !buttonIndex == [actionSheet cancelButtonIndex] (invert buttonIndex (!) and check if that's equal).

Upvotes: 0

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