在用户使用app过程中,会产生各种各样的事件,iOS中的事件可以分为3大类型:
UIKit可识别三种类型的输入事件:
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UIResponder - 响应者对象
概念:
在iOS中不是任何对象都能处理事件,只有继承了UIResponder的对象才能接收并处理事件。 |
成员:
UIApplication、UIViewController、UIView都继承自UIResponder,因此它们都是响应者对象,都能够接收并处理事件 |
UIResponder的内部方法:
1 //触摸事件2 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event;3 - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event;4 - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event;5 - (void)touchesCancelled:(nullable NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event;6 - (void)touchesEstimatedPropertiesUpdated:(NSSet * _Nonnull)touches NS_AVAILABLE_IOS(9_1);
1 //加速计事件2 - (void)motionBegan:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);3 - (void)motionEnded:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);4 - (void)motionCancelled:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);
//远程控制事件- (void)remoteControlReceivedWithEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(4_0);
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By:蓝田(Loto)
原标题:1.0 iOS中的事件
关键词:IOS