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iOS Build a Simple iPhone App (iOS7) Animating and Intercepting Events Intercepting Touch Events

Posted by AbdelGhafour Mohie
AbdelGhafour Mohie
1,876 Points

Touch Event

What if i want to only touch the Crystal shape in order to excite my code ?! do i need to have that specific shape in a separate viewImage ?! How to accomplish that ?

1 Answer

Sam Soffes
STAFF
Sam Soffes
Treehouse Guest Teacher
Sam Soffes
Sam Soffes
Treehouse Guest Teacher

You could do this with UITapGestureRecognizer. If you set the delegate, there's a method for gestureRecognizer:shouldReceiveTouch:. You could use this to see if the point they touched is in the crystal shape. Knowing where the shape is is a bit tricky. I'd probably make a UIBezierPath with a circle and a rectangle and then call containsPoint: on it.

I bet this is a bit more complicated than you expected :) It's generally a good idea to make hit areas bigger than the actual object on iOS (especially for small things). You want to make it as easy as possible touch stuff. If there's nothing around something and a the users touches there, they probably meant to touch the button it's near.