What exactly are the differences between the UIControlEvents .EditingDidEnd and .EditingDidEndOnExit, and how do they relate to each other? The documentation on UIControl is pretty vague, and has ...

I'm creating a custom UI-Element and want to trigger a custom UIControlEvent. I already found out, that there is a range ApplicationReserved. Sadly this doesn't work, because it "does not conform ...

I want my UIButton to show up the highlighted state when I click over a button that is already selected. Basically in the highlighted state I apply a *.png image as my UIButton backgroundImage to ...

I am using addTarget:action:forControlEvents like this: [newsButton addTarget:self action:@selector(switchToNewsDetails) forControlEvents:UIControlEventTouchUpInside]; and I would like to pass p...

I am creating a custom UIView. I am wondering how can I replicate the UIButton behavior on this UIView. I would like to be able to call addTarget to it like an UIButton. I know that I can subclas...

I've run into a weird effect that sure looks like a bug in iOS7 -- but often in the past, when I have thought I found a bug in Apple's APIs, it has turned out to be my own misunderstanding. I have...

When the user taps and holds down a UIButton in my app, after a while a UIControlEventTouchCancel event is fired. The Apple documentation for UIControl doesn't have any detailed explanation about t...

Background I've previously learned how to use a Gesture Recognizer or continueTrackingWithTouch to get continuous updates of the current touch location and to then use those to do something like t...

I am creating piano-like view with UIButton as piano keys. What UIControlEvents should I listen for to get callbacks when button gets and loses highlighted state? I tried to make subclass of UIBu...

I've created a custom picker view type of control by subclassing UIView. I would like to be able to send a "UIControlEventValueChanged" control event from within this control, so that I can registe...

Lets assume we have ten pages. An event handler for the event is added as below: Run the app. Now in the ten pages, by default page 1 (index 0) is selected. Touch the second page or third page. T...

I am implementing UIButton and my UIControlEventTouchUpInside event does not fire, even though UIControlEventTouchDown does fire. UIButton *btnClose = [UIButton buttonWithType:UIButtonTypeCustom];...