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Re: HELP: with UIButton actions (new to objective c and iphone dev)

Subject: Re: HELP: with UIButton actions (new to objective c and iphone dev)
From: Helge Hess <email@hidden>
Date: Mon, 7 Apr 2008 14:22:08 +0200
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On 07.04.2008, at 14:10, Matthew Pearson wrote:

The problem: How do I pass arguments ( ie the button number 0-9, or in future pi (3.142) ) to a method using the addTarget: action: syntax

You don't. The single argument of an action is always the sender (sending object, eg the NSButton).

Don't know how it works on the iPhone (I guess the same), but on Cocoa you would distinguish the pressed buttons using a tag (NSControl - setTag:/-tag).

  [button setTag:0];
  [button setTag:1];
  [button setTag:2];

- (void)digitButtonPressed:(id)_sender {
  NSLog(@"the user pressed: %i", [(BSControl *)_sender tag]);
}

Target/Action:
http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CommunicatingWithObjects/chapter_6_section_5.html

Helge
--
Helge Hess
http://www.helgehess.eu/
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	>HELP: with UIButton actions (new to objective c and iphone dev) (From: Matthew Pearson <email@hidden>)

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