How do I dismiss a full screen UIImageView?

Question

I am creating a UIImageView like this when a button is clicked in my app

CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGFloat screenWidth = screenRect.size.width;
    CGFloat screenHeight = screenRect.size.height;

    NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:selectedVariantDetail[@"fcVariantImageUrl"]]];

    UIImageView *dot =[[UIImageView alloc] initWithFrame:CGRectMake(0,0,screenWidth,screenHeight)];
    dot.image=[UIImage imageWithData:imageData];
    dot.tag = 2;
    [self.view addSubview:dot];

But how do I dismiss the same view when it is tapped on?

Answer 1

You can add UITapGestureRecognizer in your UIImageView and on its action remove the UIImageView .

//Add tap Gesture
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissTapGesture:)];
[dot addGestureRecognizer:tapGesture];
//Set userInteractionEnabled property of imageView to true because by defaults its false
dot.userInteractionEnabled = YES;

Now simply remove UIImageView in action method of UITapGestureRecognizer .

- (void)dismissTapGesture:(UITapGestureRecognizer*)gesture {
    [gesture.view removeFromSuperview];
}