iOS UIActionSheet question

[Jeremy1026]

Ok, I created my UIActionSheet and populated it with 5 buttons. Now how do I determine which button is pressed (to continue on with the operation of my application)?

I tried using:

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
	// the user clicked one of the OK/Cancel buttons
	if (buttonIndex == 0)
	{
		NSLog(@"ok");
	}
}

When I drop this into my application, NSLog doesn't show anything no matter what button I press?

 

[robbieduncan]

Have you tried logging the buttonIndex to see what it gets set to? I'm sure the documentation tells you the values, but as I'm not on a Mac right now I can't tell you where.

 

[Luke Redpath]

I seem to remember having this issue the other day when I used UIActionSheet for the first time - can't remember exactly what the issue was and I don't have my code nearby. However, it *might* be that you are trying to compare an NSNumber to an int. One thing that will work is to call [buttonIndex integerValue] and compare that to an int but there might be a more idiomatic way of doing this (look at the NSNumber documentation).

 

[robbieduncan]

One thing that will work is to call [buttonIndex integerValue] and compare that to an int but there might be a more idiomatic way of doing this (look at the NSNumber documentation).

Can you pass messages to NSIntegers? I didn't think they were objects?

 

[Luke Redpath]

You're right, they aren't. I misread the original code, I thought it was an NSNumber, which is a class with an integerValue method.

 

[robbieduncan]

Having looked at the documentation it would appear that the first button should have index 0...

 

[Luke Redpath]

Had a look at my own UIActionSheet delegate method and I'm using a switch statement:

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
  switch (buttonIndex) {
    case 0:
       // do something
      break;
    case 1: 
       // do something else
    default:
      break;
  }