1.0 events in iOS and 1.0iOS

1.0 events in iOS and 1.0iOS

When a user uses an app, various events are generated. Events in iOS can be divided into three types: UIKit can recognize three types of input events:

Touch event Accelerator event/motion event Remote Control event

UIResponder-response object Concept:

In iOS, not all objects can process events. Only objects that inherit UIResponder can receive and process events.

Member:

UIApplication, UIViewController, and UIView are all inherited from UIResponder. Therefore, they are all responder objects that can receive and process events.

Internal method of UIResponder:

1 // touch event 2-(void) touchesBegan :( NSSet <UITouch *> *) touches withEvent :( nullable UIEvent *) event; 3-(void) touchesMoved :( NSSet <UITouch *> *) touches withEvent :( nullable UIEvent *) event; 4-(void) Events :( NSSet <UITouch *> *) touches withEvent :( nullable UIEvent *) event; 5-(void) touchesCancelled :( nullable NSSet <UITouch *> *) touches withEvent :( nullable UIEvent *) event; 6-(void) handle :( NSSet * _ Nonnull) touches NS_AVAILABLE_IOS (9_1 );

1 // accelerator event 2-(void) motionBegan :( UIEventSubtype) motion withEvent :( nullable UIEvent *) event NS_AVAILABLE_IOS (3_0); 3-(void) motionEnded :( UIEventSubtype) motion withEvent :( nullable UIEvent *) event failed (3_0); 4-(void) motionCancelled :( UIEventSubtype) motion withEvent :( nullable UIEvent *) event NS_AVAILABLE_IOS (3_0 );

// Remote Control event-(void) remoteControlReceivedWithEvent :( nullable UIEvent *) event NS_AVAILABLE_IOS (4_0 );

 

 

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