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The UIKit framework provides the required infrastructure for your iOS or tvOS apps. It provides the window and view architecture for implementing your interface, the event handling infrastructure for delivering Multitouch and other types of input to your app, and the main run loop needed to manage interactions among the
As events occur, UIKit dispatches them to your app's responder objects for handling. There are several kinds of events, including touch events, motion events, remote-control events, and press events. To handle a specific For information about responders and the responder chain, see Event Handling Guide for UIKit Apps.
28 Jan 2013 About Events in iOS 6. At a Glance 6. UIKit Makes It Easy for Your App to Detect Gestures 6. An Event Travels Along a Specific Path Looking for an Object to Handle It 7. A UIEvent Encapsulates a Touch, Shake-Motion, or Remote-Control Event 7. An App Receives Multitouch Events When Users Touch Its
Apple's Event Handling Guide for iOS states that “To receive motion events, the responder object that is to handle them must be the first responder." So we do this in our root view controller: - (BOOL) canBecomeFirstResponder { return YES; } - (void) motionEnded:(UIEventSubtype)motion withEvent:(UIEvent*)event { if
Group. iPhone Application Programming. • User actions (interaction) are propagated as events in. iOS. • Events types: multi-touch, motion, or remote control If the hit-test view cannot handle an event, the event travels up that view's chain of responders until the system finds an object that can handle it. 5. Hit-Testing. A. B. C.
Apps receive and handle events using responder objects. A responder Responders receive the raw event data and must either handle the event or forward it to another responder object. When your Motion events related to the accelerometers, gyroscopes, and magnetometer do not follow the responder chain. Instead
18 Sep 2013 In the main event loop, the application object gets (raw) touch events in its event queue, packages them as UITouch objects in UIEvent objects, and sends them to the The first responder first receives these motion events (as UIEvent objects) and if it cannot handle them they travel up the responder chain.
12 Dec 2016 Orientation events are another example of an iOS-specific event. Read Safari CSS Visual Effects Guide to learn more about CSS visual effects. You can use JavaScript DOM touch event classes available on iOS to handle multi-touch and gesture events in a way similar to the way they are handled in
Apps can receive many different types of events, including touch events, motion events, remote-control events, and press events. Touch events are the most common and are object to your local data structures. For more information on how to handle events in your UIKit app, see Event Handling Guide for UIKit Apps.

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February 2018