手势识别

mgtts

于 2011-09-03 17:19:21 发布

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分类专栏： ios开发文章标签：人工智能

本文链接：https://blog.youkuaiyun.com/mgtts/article/details/84012247

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本文探讨了SwiftUI框架中如何实现手势识别，通过创建一个简单的手势响应应用，介绍了如何使用UISwipeGestureRecognizer来处理左右滑动事件，并详细阐述了手势识别的处理逻辑及移除手势的方法。

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    UISwipeGestureRecognizer *recognizer;  
    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];  
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];  
    [[self view] addGestureRecognizer:recognizer];  
    [recognizer release];

处理:

- (void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer{  
    if (recognizer.direction==UISwipeGestureRecognizerDirectionLeft) {  
        NSLog(@"left");
    }
}

移出:

    for (UISwipeGestureRecognizer *recognizer in [[self view] gestureRecognizers]) {
        [[self view] removeGestureRecognizer:recognizer];
    }