CODEWITHSUNDEEP
iphoneiosuiviewtouchesbegan
Mano
Mano

Reputation: 740

How to make 'touchesBegan' method work for a specific view?

In my add contact page, i have a view and a scrollview on it and again a view on it. and in that last view i ve textboxes, etc. i have given the 'touchesBegan' method but it is called only for the view at the bottom. how to point that method to another view i.e., the view at the top? 

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
 [self.AddView endEditing:YES];
}

Upvotes: 9

Views: 29897

Answers (7)

Mahmut K.
Mahmut K.

Reputation: 850

If your view is a parent view then can use this code:

if let touch = touches.first {
        let position = touch.location(in: yourView)


        let pnt: CGPoint = CGPoint(x: position.x, y: position.y)

        if (yourView.bounds.contains(pnt)) {
           //You can use: yourView.frame.contains(pnt)


            //OK.


        }
    }

Upvotes: 1

codeedoc
codeedoc

Reputation: 1

Referring to the Apple documentation on UIResponder, all UIView objects (which includes UIWindow), UIApplication object, UIViewController objects are all instances of UIResponder. To handle a specific type of event, a responder must override the corresponding methods.

In our case touches is our type of event. So our responder should implement the following methods. touchesBegan(:with:), touchesMoved(:with:), touchesEnded(:with:), and touchesCancelled(:with:)

Since we only wish to know when a user has touched a particular view, we only need to implement touchesBegan(_:with:). Since we are not overriding the other methods we must call super.touchesBegan(touches, with: event). If we were overriding ALL of the other methods, we wouldn't be required to call super.

Looking at touchesBegan(_:with:) the parameter touches is a set of UITouch instances. Each instance represents the touches for the starting phase of the event, which is represented by the parameter event.

For touches in a view, this set contains only one touch by default. Hence touches.first is the only UITouch instance in the set. We then access the property view, this represents the view or window in which the touch occurred. Lastly we compare the view that has been touched with your desired view.

It should be noted that if you wish to receive multiple touches- you must set the view's isMultipleTouchEnabled property to true. Then the set of touches will have more than one UITouch instance and you will have to handle that accordingly. 

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesBegan(touches, with: event)

        if let touch = touches.first, touch.view == myView {
            // Do something
        }
    }

Upvotes: 0

Andre Yonadam
Andre Yonadam

Reputation: 1024

Here is the answer in Swift:

override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
    let touch = touches.first as! UITouch
    if(touch.view == myView){
        // Code
    }
}

Upvotes: 9

Paras Joshi
Paras Joshi

Reputation: 20541

First check the property UserInteractionEnabled of that whole controls and set to YES

After check out your bottom view frame that its not over on that views

And after you can checkout that with bellow condition and do something with particular controls touch event..

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    [touch locationInView:viewBoard];
    if([touch.view isKindOfClass:[UIImageView class]])
    {
       UIImageView *tempImage=(UIImageView *) touch.view;
       if (tempImage.tag  == yourImageTag) 
       {
          /// write your code here
       }
     }
}

Upvotes: 6

SAMIR RATHOD
SAMIR RATHOD

Reputation: 3510

try this :

  - (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
        UITouch *touch1 = [touches anyObject];
        CGPoint touchLocation = [touch1 locationInView:self.finalScore];

         if(CGRectContainsPoint(YourView.frame, touchLocation));
         {
            //Do stuff.
         }


  }

Upvotes: 4

Rushi
Rushi

Reputation: 4500

One way this is how you can do :

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch= [touches anyObject];
    if ([touch view] == image1)
    {
        //Action
    }

}

Please Note : As you are using UIScrollView you might not able to get touches method for UIScrollView. In that case you might have to use UIGesture.

Upvotes: 30

geo
geo

Reputation: 1791

try

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [[event touchesForView:vTouch] anyObject];
    if(!touch)
        return;

    CGPoint pointNow = [touch locationInView:otherView];
    {
        // code here
    }
}

Upvotes: 2

Related Questions