Objective-c: How to detect double tap on view?

Question

I am developing an application where I have multiple controls on view but I want to enable them when user double tap the view

You can take the example of double click b

Answer 1

You need to add an UITapGestureRecognizer to the view which you want to be tapped.

Like this:

- (void)viewDidLoad {
    [super viewDidLoad];

    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapGesture:)];
    tapGesture.numberOfTapsRequired = 2;
    [self.view addGestureRecognizer:tapGesture];
    [tapGesture release];
}

- (void)handleTapGesture:(UITapGestureRecognizer *)sender {
    if (sender.state == UIGestureRecognizerStateRecognized) {
        // handling code
    }
}

Answer 2

Add a UITapGestureRecognizer to the view, with numberOfTapsRequired = 2.