iOS - debugging tool to detect view touched

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iOS - debugging tool to detect view touched

Wondering if anyone has written or come across a good way to log to the console the view that a touch occurred in. I know touchesEnded: can be implemented, but my problem is that something mysterious is blocking touches on my views and I don't know what it is. I would just like to know what is intercepting the touches.

I would like to log to the console:

"Touch occurred in view: nameOfSomeUIView"

Hi,

Each UITouch object has a view property described as "The view in which the touch initially occurred." You can subclass UIWindow and override the sendEvent method. In your implementation of sendEvent you can call [super sendEvent: event] and after that inspect the view properties of all the touches that belong to the event.

As a general tip: Check the hitTest method of your views if your UITouches do not behave as expected. You can override this method to see which view should receive touches.

Felix 2010-09-02 19:04:57

I have subclassed UIWindow and used the subclass type in the App Delegate. I implemented - (void)sendEvent:(UIEvent *)event in the subclass, but it is never getting called.

sol 2010-09-02 21:47:41

Actually scratch that, I'm getting sendEvent now. Can you suggest how to find which view is being touched?

sol 2010-09-02 21:57:35

Figured out how to pull the touch out of the UIEvent. I can get the memory address of the view being touched. Would be nice if I could get it's name.

sol 2010-09-02 22:15:19

You could use the "tag" property of your views to identify them. Otherwise add a name property to your subclass "MyView" of "UIView" and if on of the "touch.view" objects is an instance of "MyView" log it's name property. Hope this helps.

Felix 2010-09-03 05:54:56

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iOS - debugging tool to detect view touched

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