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iphonecocoa-touchuiscrollview

How to Cancel Scrolling in UIScrollView

I use UIScrollView to make large-sized (larger than 320px) UI on iPhone.

I made an instance of UIScrollView and added some subviews on it. The problem is that I want to enable scrolling only when user touches outside of subviews, stop scrolling when user touches one of subviews.

I read documents and tried to find samples but I can't find good hint. If you have any idea, please help me.

Solution

  • If you want to detect touches inside any of the subviews of the UIScrollView, you will have to subclass UIScrollView and override the touchesShouldBegin and touchesShouldCancelInContentView methods which are specifically created for this purpose.

    Other than this, there is no way you can identify touches in the subviews as UIScrollView tends to handle all touches itself and doesn't pass them to its subviews.

    All the best.