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

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

From: Matthew Pearson <email@hidden>

Date: Mon, 7 Apr 2008 13:10:13 +0100

Delivered-to: email@hidden

i am new to objective c and iphone dev and have been working through examples. I am trying to build a simple iphone Calculator to help me learn.

The situation:

- I have 10 UIbuttons with setTitles of 0 through to 9, these display correctly in the iphone simulator.

- I have a UILabel which I want to display the input from the 10 buttons.

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

Button code as follows:

//button one

UIButton * alloc] initWithFrame:genericButtonFrame];

[oneButton setTitle:@"1" forStates:UIControlStateNormal];

oneButton.font = [UIFont boldSystemFontOfSize:BUTTON_FONT_SIZE];

oneButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;

oneButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;

[oneButton setBackgroundImage:genericImage forStates:UIControlStateNormal];

[oneButton setBackgroundImage:buttonBackgroundPressed forStates:UIControlStateHighlighted];

NSString *test = @"1";

[oneButton addTarget:self action:@selector(insertButtonValue:???????????) forControlEvents:UIControlEventTouchUpInside]; //hello: is sent when the button is touched

oneButton.center = CGPointMake( 45.0, 240.0);

oneButton.backgroundColor = [UIColor clearColor];

[aContentView addSubview:oneButton];

[oneButton release];

//button two etc etc etc

Method to be called:

- (void) insertButtonValue: (NSString *) valueSentFromButton

{

NSString *buttonValue = [NSString stringWithFormat:@"button sent %@!", valueSentFromButton];

self.label.text = buttonValue;

}

Obviously the numeric buttons will all have different values, and I don't want to call a separate method for each one. I have tried loads of ways of specifying it and each time meet with various compiler errors. Starting to go MAD!!

With the code as is ( obviously no ????? ) the method is receiving an object reference to the UIButton, can I set a values within the UIButton object??? All help greatly appreciated.

Thanks

Matt

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