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Web and WebWorks Development

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Developer
madiha
Posts: 107
Registered: ‎05-26-2011
My Device: Torch

Disabling pinch zoom also disables scrolling

Hi,

I have used this code to disable zoom in my app on pinch or double tap event but it also disables scrolling on the page

 

document.ontouchstart = function(event) {
		event.preventDefault();
		var touchEvent = event.changedTouches[0];
		if (touchEvent.pageX || touchEvent.pageY) {

			lastX = touchEvent.pageX;
			lastY = touchEvent.pageY;
			window.scrollTo(lastX, lastY);
			
		}

	}
	

 I needto resolve the issue  have been struggling to find a sloution to this issue

Retired
astanley
Posts: 1,382
Registered: ‎07-02-2009
My Device: BlackBerry Bold 9900
My Carrier: Bell

Re: Disabling pinch zoom also disables scrolling

Read this article for more info on using the preventDefault() method

 

http://supportforums.blackberry.com/t5/Web-and-WebWorks-Development/How-to-prevent-default-touch-and...

 

 

You cannot disable pinch-zoom and allow scrolling using the preventDefault() technique.

 

However, you can use the following meta viewport property to  specifically prevent the pinch-zoom behavior:

 

<meta name="viewport" content="user-scalable=no">

 

Follow me on Twitter: @n_adam_stanley
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Developer
madiha
Posts: 107
Registered: ‎05-26-2011
My Device: Torch

Re: Disabling pinch zoom also disables scrolling

I have trired this but it doesnot work on Torch  i,e touch devices....

;(