How to add action for UIButton

Question

I am new to iPhone technology. Please anyone tell me how to add action for UIButton.

UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(0, 0, 100, 25);
btn.backgroundColor = [UIColor clearColor];
[btn setTitle:@"Play" forState:UIControlStateNormal];
[btn addTarget:self action:(buttonClick:) forControlEvents:UIControlEventTouchUpInside];
btn.center = self.center;
[self addSubview:btn];

Not about the question but you have a memory leak here. don't call retain on the button if you don't call release on it later. The retain is not needed as the button is not an ivar and is autoreleased. — Zoleas, Dec 01 '11 at 13:17
[IOS 14 SDK: you can add action with closure callback:](https://stackoverflow.com/questions/5843427/how-do-you-add-an-action-to-a-button-programmatically-in-xcode/640871599#answer-64087159) — Ucdemir, Sep 27 '20 at 10:01

score 11 · Answer 1 · answered Dec 07 '11 at 06:09

Use This

    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button addTarget:self 
       action:@selector(aMethod:)forControlEvents:UIControlEventTouchDown];
    [button setTitle:@"Show View" forState:UIControlStateNormal];
    button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
    [view addSubview:button];

score 7 · Answer 2 · answered Dec 01 '11 at 12:53

7

You specify selectors using @selector(). So, the action parameter looks like,

action:@selector(buttonClick:)

answered Dec 01 '11 at 12:53

EmptyStack

51,274
23
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score 2 · Answer 3 · answered Mar 08 '16 at 09:24

Use Like This

    UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        btn.frame = CGRectMake(0, 0, 100, 25);
        btn.backgroundColor = [UIColor clearColor];
        [btn setTitle:@"Play" forState:UIControlStateNormal];
        [btn addTarget:self action:@selector(btnTapped:) forControlEvents:UIControlEventTouchUpInside];
        btn.center = self.center;
[self addSubview:btn];

and add your selector method

-(IBAction)btnTapped:(id)sender{

}

score 2 · Answer 4 · edited Apr 22 '23 at 01:46

iOS 14.0+

you can use UIAction instead of addTarget:

            // Example: action to remove or add in the favorite list of recipes
    button.addAction(
        UIAction { _ in
            if self.isFavorite {
                self.isFavorite = false
                print("✅: Recipe is not favorite")
            } else {
                self.isFavorite = true
                print("✅ Recipe is favorite")
            }
        }, for: .touchUpInside)

score 1 · Answer 5 · answered Mar 08 '16 at 05:11

1

Swift code:

button.addTarget(self, action:"action_button", forControlEvents:.TouchUpInside)
...
func action_button() {
    //  implement me
}

answered Mar 08 '16 at 05:11

superarts.org

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score 1 · Answer 6 · edited Dec 02 '11 at 10:44

1

action:@selector(buttonClick:)

edited Dec 02 '11 at 10:44

Srikar Appalaraju

71,928
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answered Dec 02 '11 at 10:34

Gaurav Govilkar

154
1
1
10

score 0 · Answer 7 · answered Apr 15 '22 at 00:50

0

Create a function with @objc
add the function as a target to the UIButton. like so:

menuButton.addTarget(self, action: #selector(menuTapped), for: .touchUpInside)

answered Apr 15 '22 at 00:50

ScottyBlades

12,189
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How to add action for UIButton

7 Answers7

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