ios开发笔记之手势触控

最新推荐文章于 2025-08-15 12:04:15 发布

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本文详细介绍了如何在iOS应用中处理单击与双击事件，并探讨了长按事件的实现与可能存在的问题。通过实例演示，帮助开发者掌握不同手势事件的响应机制。

1.区分单击和双击事件

- (void)addTapHandler
{
    // 单击的 Recognizer
    UITapGestureRecognizer* singleRecognizer;
    singleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapActon:)];

    /**
     *  单击
     */
    singleRecognizer.numberOfTapsRequired = 1; // 单击

    
    //给view添加一个手势监测；
    [self.feedView addGestureRecognizer:singleRecognizer];
    
    
    // 双击的 Recognizer
    UITapGestureRecognizer* doubleRecognizer;
    doubleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapActon)];
    
    
    
    /**
     *  双击
     */
    doubleRecognizer.numberOfTapsRequired = 2;
   
    
    
    //给view添加一个手势监测；
    [self.feedView addGestureRecognizer:doubleRecognizer];
    
    
    [singleRecognizer requireGestureRecognizerToFail:doubleRecognizer];
}

2. UILongPressGestureRecognizer 执行两次的问题

- (void)handleLongPress:(UILongPressGestureRecognizer*)sender { 
    if (sender.state == UIGestureRecognizerStateEnded) {
        NSLog(@"Long press Ended");
    }
    else {
        NSLog(@"Long press detected.");
    }
}