UITapGestureRecognizer - single tap and double tap

Cover Image for UITapGestureRecognizer - single tap and double tap
Matheus Mello
Matheus Mello
published a few days ago. updated a few hours ago

πŸ“±πŸ‘†πŸ‘‡ Experience the Magic of Single and Double Tap Gesture Recognizers!

Are you trying to add single tap and double tap gesture recognizers to a view in your iOS app? πŸ“±βœ¨ One recognizer works perfectly fine, but the other one is not cooperating? πŸ€” Don't worry, you're not alone! Many developers struggle with this issue, but we're here to help you out! πŸ’ͺπŸ’‘

The Frustration: Single Tap and Double Tap Gone Wrong 😣

One developer recently came across a baffling problem: they were attempting to add both a single tap gesture recognizer and a double tap gesture recognizer to a view in their app. However, while the single tap recognizer worked as expected, the double tap recognizer seemed to be completely ignored! 😫

The developer experimented with various properties like cancelsTouchesInView, delaysTouchesBegan, and delaysTouchesEnded, but nothing seemed to make a difference. 😩 Even though they double-tapped, the single tap recognizer always activated, and the double tap event also triggered the super view. The custom double tap recognizer remained oblivious to all this chaos! 😡

The Solution: Making Single and Double Tap Recognizers Live in Harmony πŸ₯³

To get your single tap and double tap gesture recognizers to play nicely together, follow these steps:

πŸ‘‰ Step 1: Create and Configure the Recognizers

First, create an instance of UITapGestureRecognizer for both the single tap and double tap recognizers. Set the target and action for each recognizer to the appropriate methods in your code. For example:

// Single tap recognizer
let singleTapRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleSingleTap(_:)))
singleTapRecognizer.numberOfTouchesRequired = 1

// Double tap recognizer
let doubleTapRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleDoubleTap(_:)))
doubleTapRecognizer.numberOfTouchesRequired = 2

πŸ‘‰ Step 2: Ensure Appropriate Behavior

To avoid conflicts between the single tap and double tap recognizers, you need to do a little extra configuration. Call require(toFail:) on the single tap recognizer and pass the double tap recognizer as the argument. This ensures that the single tap recognizer waits for a double tap failure before activating. For example:

singleTapRecognizer.require(toFail: doubleTapRecognizer)

πŸ‘‰ Step 3: Add the Recognizers to Your View

Finally, add both the single tap and double tap gesture recognizers to your view. Make sure to add them in the correct order, with the single tap recognizer added first, followed by the double tap recognizer. For example:

view.addGestureRecognizer(singleTapRecognizer)
view.addGestureRecognizer(doubleTapRecognizer)

And that's it! Your single tap and double tap gesture recognizers should now work together like a harmony of taps! πŸ™ŒπŸŽ‰

Don't forget to implement the relevant methods (handleSingleTap(_:) and handleDoubleTap(_:)) to perform the desired actions when the gestures are recognized. πŸ•ΊπŸ’ƒ

[Insert beautiful example code here]

Unleash the Power of Taps – Get Tapping! πŸ’₯

With these easy-to-follow steps, you'll no longer find yourself baffled by the enigma of single tap and double tap gesture recognizers. 🌟✨ Now, it's time to unleash the power of taps in your app and provide your users with an incredible interactive experience! πŸš€πŸ’₯

Share your experiences or other tips and tricks you've discovered while working with gesture recognizers in the comments section below. Let's tap into the collective wisdom of the developer community! πŸ€“πŸ”„πŸ’¬

Now go forth and create amazing apps with the magic of taps! Happy coding! πŸ’»πŸŽ‰πŸ”₯


References:

πŸ‘₯πŸ€πŸ’‘πŸ’¬

What's a common issue you've faced with gesture recognizers in your app? Let us know in the comments section below and get help from our community of developers! 🀝🌟


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