How to dismiss UIActionSheet with close button and avoid crash?

Question

I have read on another post (how to dismiss action sheet) that I can use

[actionSheet dismissWithClickedButtonIndex:0 animated:YES];

to dismiss the uiactionsheet with the close button, as defined in:

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil 
                                                         delegate:nil
                                                cancelButtonTitle:nil
                                           destructiveButtonTitle:nil
                                                otherButtonTitles:nil];

[actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

CGRect pickerFrame = CGRectMake(0, 40, 0, 0);

UIPickerView *pickerView = [[UIPickerView alloc] initWithFrame:pickerFrame];
pickerView.showsSelectionIndicator = YES;
pickerView.dataSource = self;
pickerView.delegate = self;


[actionSheet addSubview:pickerView];
[pickerView release];

UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Close"]];
closeButton.momentary = YES; 
closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
closeButton.tintColor = [UIColor blackColor];
[closeButton addTarget:self action:@selector(dismissActionSheet:) forControlEvents:UIControlEventValueChanged];
[actionSheet addSubview:closeButton];


[actionSheet dismissWithClickedButtonIndex:0 animated:YES];


[closeButton release];


[actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];

[actionSheet setBounds:CGRectMake(0, 0, 320, 485)];

---

However, I am not sure where to place this line, assuming this will solve my problem:

[actionSheet dismissWithClickedButtonIndex:0 animated:YES]; 

Also, the app crashes when I click the close button, with error message "PROGRAM RECEIVED ERROR MESSAGE SIGBRT". I assume my two problems are related. Any help out there?

Greenes

Answer 1

Just implement dismissActionSheet and put your dismiss message there.

The dismissActionSheet method would look something like this:

-(void)dismissActionSheet {
   [sheet dismissWithClickedButtonIndex:0 animated:YES];
}

Artichoke

Did you not define the method -(void)dismissActionSheet:(id)sender? You defined it in your addTarget method of the button. If you tell it that the selector is dismissActionSheet: you will also have to write one ;-). In this method, call dismissWithClickedButtonIndex:animated:. -- All clear? – Artichoke

Thanks Mundi, I'm almost there. I have implemented -(void)dismissActionSheet:(id) sender{ [sender dismissWithClickedButtonIndex:0 animated:YES]; } However, I am sure sender is not what I need to put before the 'dismissWithClickedButtonIndex. I need to reference the actionSheet. How do I reference the actionSheet when it is not an argument in the function dismissActionSheet:? – Greenes

Right. The function does not know what type the sender is, (just id), so you have to cast it. See the edit of my answer. – Artichoke

Mundi, I tried out your suggestion and was hopeful. However, it still crashes. Isn't the sender a button and not a UIActionsheet? – Greenes

Indeed. The best solution is to keep a reference of your action sheet elsewhere (put it into your .h file and assign to it the action sheet when you create it) and not using the sender at all. – Artichoke

It worked... Mundi you are the man! Simply created an instance variable actionSheetRef and assigned actionSheetRef=actionSheet; – Greenes