UIGestureRecognizer学习笔记

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12th,September,2016

概述

UIKit-UIGestureRecognizer–苹果开发文档
UIGestureRecognizer是具体手势识别器的抽象基类。具体的子类有:
UITapGestureRecognizer // 点按
UIPinchGestureRecognizer // 捏合，比如图片的缩放
UIRotationGestureRecognizer // 旋转
UISwipeGestureRecognizer// 轻扫，比如图片的左右轻扫切换
UIPanGestureRecognizer // 拖动，比如图片位置的移动
UIScreenEdgePanGestureRecognizer
UILongPressGestureRecognizer // 长按
相关的代理: UIGestureRecognizerDelegate

A gesture recognizer doesn’t participate in the view’s responder chain.

Show the Code

添加手势流程

创建手势;
配置手势;
添加手势到相应的视图;

Demo

self.swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];    self.swipe.direction = UISwipeGestureRecognizerDirectionUp | UISwipeGestureRecognizerDirectionDown | UISwipeGestureRecognizerDirectionLeft | UISwipeGestureRecognizerDirectionRight;    [self.inputTextView addGestureRecognizer:self.swipe];

参考资料

iOS 手势操作：拖动、捏合、旋转、点按、长按、轻扫、自定义

未完待续，敬请期待…

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