Library Overview
The GestureRecognizerClosures library is designed to simplify the implementation of UIGestureRecognizer in iOS applications. It provides closures for the target-action pattern, allowing developers to handle gesture events with ease.
Installation
This library requires the following:
- iOS 9.0 or above
- Xcode 10.0 or above
- Swift 4.0 or above
To install the GestureRecognizerClosures library, you can use CocoaPods. Simply add the following line to your Podfile:
pod 'GestureRecognizerClosures'
Then, run the following command in the terminal:
pod install
Usage
Example 1 – Adding a UITapGestureRecognizer with a closure
To add a UITapGestureRecognizer with a closure, follow these steps:
- Import the GestureRecognizerClosures library in your source file:
- Create a UITapGestureRecognizer and assign it to a variable:
- Set the closure as the action for the gesture recognizer:
- Add the gesture recognizer to the desired view:
import GestureRecognizerClosures
let tapGesture = UITapGestureRecognizer()
tapGesture.addAction { gesture in
// Your closure logic goes here
}
yourView.addGestureRecognizer(tapGesture)
Example 2 – Adding a UIPanGestureRecognizer with a closure
To add a UIPanGestureRecognizer with a closure, follow these steps:
- Import the GestureRecognizerClosures library in your source file:
- Create a UIPanGestureRecognizer and assign it to a variable:
- Set the closure as the action for the gesture recognizer:
- Add the gesture recognizer to the desired view:
import GestureRecognizerClosures
let panGesture = UIPanGestureRecognizer()
panGesture.addAction { gesture in
// Your closure logic goes here
}
yourView.addGestureRecognizer(panGesture)
Additional Features and Considerations
Multiple Gesture Recognizers on a Single View
You can add multiple gesture recognizers to a single view using the same process described above. Simply create the desired gesture recognizers and add them to the view using the addGestureRecognizer(_:) method
.
Removing a Gesture Recognizer
To remove a gesture recognizer from a view, use the removeGestureRecognizer(_:) method
and pass the reference to the gesture recognizer you want to remove.
yourView.removeGestureRecognizer(tapGesture)
Handling Gesture State
The closure associated with a gesture recognizer can handle different states of the gesture by checking the state
property of the gesture parameter. This allows you to implement specific logic based on the current state of the gesture.
if gesture.state == .began {
// Handle gesture began state
} else if gesture.state == .ended {
// Handle gesture ended state
}
Support
If you encounter any issues while using the GestureRecognizerClosures library, feel free to contact our support team at support@gestureclosures.com. We will be happy to assist you.