get index or tag value from imageview tap gesture

Question

This is the image from app store whenever we search for any app. I also want t

Answer 1

For those using storyboards and swift:

1. Change tag of every UIView or UIImageView in IB (interface builder) ex:

   view1.tag = 1
   view2.tag = 2
   view3.tag = 3
   ...
   

2. Still in storyboard add UITapGestureRecognizer to every UIView you have put in storyboard view (view1, view2, view3 ...) :

3. Write your function in Swift file:

// code in swift file :

    @IBAction func viewTapped(sender: AnyObject) {
            // You can write anything here. I'm guessing you need something with 'enable/disable' function, and the best call is the CustomView which you create from File > New file
            print("tapped view is view with tag: \(sender.view!!.tag)")
        }

4. Connect every TapGestureRecognizer to same function you have declared in parent UIViewController swift file:

5. Done.

Answer 2

I have resolved the issue and really thanks to all to look upon my issue.

Answer 3

At the risk of making a recommendation without seeing the full picture of your app, why not use a custom UIButton instead of UIImageViews for this? With a UIButton you can setup an action and pass the sender id, from which you can easily access your tags and pull the data from your array.

  UIButton *button = [[UIImageView alloc] initWithFrame:CGRectMake(10, i*100 + i*15, 300, 100)];
button.backgroundColor = [UIColor blueColor];
button.tag = i;
[button addTarget:self action:@selector(touchDown:) controlEvent:UIControlEventTouchDown]; 

And inside of the touchDown: method you simply have to cast the sender to a UIButton in order to access the tag

- (void)touchDown:(id)sender    
{
    UIButton* button = (UIButton*)sender;
    switch(button.tag)
    {
        case TAG1:
          break;
        //etc
    }    
}

---

OR check this out

UIScrollView *myScroll = [[UIScrollView alloc] initWithFrame: CGRectMake (0,100,200,30)];
NSMutableArray = *images = [NSMutableArray alloc] initWithObjects: img1,img2,img3,nil];


for (int i=0; i<3; i++)
{
    // set `imageView` frame 
    UIImageView *imageV = [[UIImageView alloc]initWithFrame:yourFrame];
    [imageV setImage:[images objectAtIndex:i]];
    [imageV setUserInteractionEnabled:YES];
    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:     self action:@selector (getTag:)];
    [imageV addGestureRecognizer: singleTap];
    [myScroll addSubview:imageV];

}

set tag to images as per you want After adding all imageView successfully you get them click like this :-

-(void)getTag:(id)sender
{
     UIGestureRecognizer *recognizer = (UIGestureRecognizer*)sender;
     UIImageView *imageView = (UIImageView *)recognizer.view;

     if(imageView.image.tag==1)
     {
         [imageView setImage:[UIImage imageNamed:@"anyImage.png"]];
     }
}

Answer 4

Suppose you have an array with the objects to display and a UIImageView to display the image, just do this when setting up the view with the index i:

imageView.tag = kImageTag + i; 

where kImageTag is any constant > 1 to make sure you don't get a 0 as the tag.

Now when the view is selected you can simply check for the tag of the image view.

Answer 5

The Best way to achieve what you wish is to add a UITapGesture to your image:

let tapgesture = UITapGestureRecognizer(target: self, action: Selector("openImage:"))
tapgesture.numberOfTapsRequired = 1
//if you're using a collectionView or tableview add this code inside cellForItemAtIndexPath
cell.Img.addGestureRecognizer(tapgesture)
//otherwise
myImage..addGestureRecognizer(tapgesture)

Get the superview of your tap gesture, this will give you the correct indexPath. Try this:

func openImage(sender: UITapGestureRecognizer) 
{
     let point = sender.view
     let mainCell = point?.superview
     let main = mainCell?.superview
     let cell: myViewCell = main as! myViewCell
     let indexPath = collectionView.indexPathForCell(cell)
}

You can increase or reduce the superview's depending on you hierarchy level. Start from one superview and keep increasing till you get the indexPath

Answer 6

Add gesture recognizer to the necessary image view:

UITapGestureRecognizer *frameTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(frameTapGesture:)];
[_imgView addGestureRecognizer:frameTapGesture];

Then in the gesture handler get access to the view gesture recognizer attached to:

- (void)frameTapGesture:(UITapGestureRecognizer*)sender
{
    UIView *view = sender.view; //cast pointer to the derived class if needed
    NSLog(@"%d", view.tag);
}