Question

I am creating buttons programmatically. I want to change button background color while touching up inside again it has to set back to its usual color after lifting up our finger…..

nine = [UIButton buttonWithType:UIButtonTypeCustom];
[nine setFrame:CGRectMake(15, 105, 65, 40)];
[nine setTitle:@"9" forState:UIControlStateNormal];
[nine setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[nine setBackgroundColor:[UIColor cyanColor]];
[nine addTarget:self action:@selector(clickDigit:) forControlEvents:UIControlEventTouchUpInside];
[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:nine];

// to change background color

-(void)changeButtonBackGroundColor:(id) sender
{
    [nine setBackgroundColor:[UIColor redColor]];
}

Here changeBackgroundColor method was created to change color of that button . it changes color.

Answer 1

Don’t know if this relates to your question but:
this

[nine setBackgroundColor:[UIColor redColor]];

should be

[sender setBackgroundColor:[UIColor redColor]];

Edit:
Change this

[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpInside];

to

[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventTouchDown];
[nine addTarget:self action:@selector(resetButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpInside];
[nine addTarget:self action:@selector(resetButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpOutside];
[nine addTarget:self action:@selector(resetButtonBackGroundColor:) forControlEvents:UIControlEventTouchCancel];

and add the method:

- (void)resetButtonBackGroundColor: (UIButton*)sender {
    [sender setBackgroundColor:[UIColor cyanColor]];
}