How to pass a variable to a UIButton action

Question

I want to pass a variable to a UIButton action, for example

NSString *string=@\"one\";
[downbutton addTarget:self action:@selector(action1:string)
     forCo         


        

Answer 1

You can use the strings of the UIControlStates that you dot'n use:

NSString *string=@"one";
[downbutton setTitle:string forState:UIControlStateApplication];
[downbutton addTarget:self action:@selector(action1:) forControlEvents:UIControlEventTouchUpInside];

and the action function:

-(void)action1:(UIButton*)sender{
    NSLog(@"My string: %@",[sender titleForState:UIControlStateApplication]);
}