## SHGestureRecognizerBlocks
SHGestureRecognizerBlocks is a powerful library that makes it easy to handle gestures in your iOS app using blocks. With this library, you can easily add gesture recognizers to your views and handle gesture events using blocks instead of traditional delegate methods.
### Features
– Simplified gesture handling: With SHGestureRecognizerBlocks, you can add gesture recognizers to your views and handle gesture events using blocks, reducing the need for delegate methods and making your code cleaner and more readable.
– Block-based callbacks: Replace lengthy delegate methods with concise blocks to handle gesture events. Now you can define the behavior of gestures right where you need it, making your code more modular and maintainable.
– Easy installation: SHGestureRecognizerBlocks can be easily integrated with your project using Cocoapods or manually by adding the library files to your project. Once integrated, you’re ready to start handling gestures using blocks.
### Usage
To use SHGestureRecognizerBlocks in your iOS project, follow these steps:
1. **Installation**:
– Using Cocoapods: Simply add the following line to your Podfile and run `pod install`:
“`
pod ‘SHGestureRecognizerBlocks’
“`
– Manual installation: Download the SHGestureRecognizerBlocks library from the [official GitHub repository](https://github.com/seivan/SHGestureRecognizerBlocks), then drag and drop the library files into your Xcode project.
2. **Import the library**:
– In the file where you want to use SHGestureRecognizerBlocks, import the library using the following line:
“`swift
import SHGestureRecognizerBlocks
“`
3. **Adding gesture recognizers**:
– In your view controller or view, create an instance of `SHGestureRecognizerBlocks` and assign it to a property. For example:
“`swift
let gestureRecognizer = SHGestureRecognizerBlocks()
“`
– Add the gesture recognizer to your view by calling the `addGestureRecognizer(toView:gestureRecognizer:)` method. For example:
“`swift
gestureRecognizer.addGestureRecognizer(toView: self.view, gestureRecognizer: UITapGestureRecognizer())
“`
Here, you can replace `UITapGestureRecognizer()` with any gesture recognizer of your choice (`UIPanGestureRecognizer`, `UISwipeGestureRecognizer`, etc.).
4. **Handling gesture events**:
– To handle the gesture events, use the `addGestureRecognizer(handler:)` method and pass a closure that defines the behavior of the gesture. For example:
“`swift
gestureRecognizer.addGestureRecognizer { (gestureRecognizer) in
if gestureRecognizer.state == .ended {
// Perform actions when the gesture ends
// For example, display an alert or trigger a function
}
}
“`
Inside the closure, you have access to the `gestureRecognizer` object, allowing you to customize the behavior based on its state.
### Example
Here’s an example of how you can use SHGestureRecognizerBlocks in your iOS app:
“`swift
import UIKit
import SHGestureRecognizerBlocks
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let gestureRecognizer = SHGestureRecognizerBlocks()
gestureRecognizer.addGestureRecognizer(toView: self.view, gestureRecognizer: UITapGestureRecognizer())
gestureRecognizer.addGestureRecognizer { (gestureRecognizer) in
if gestureRecognizer.state == .ended {
let alert = UIAlertController(title: “Gesture Detected”, message: “Tap gesture detected!”, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: “Ok”, style: .default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
}
}
}
“`
In this example, a tap gesture recognizer is added to the view controller’s view using SHGestureRecognizerBlocks. When the tap gesture ends, an alert is displayed to notify the user.
Note: This is just a basic example. SHGestureRecognizerBlocks provides a wide range of gesture recognizers and options for customizing the behavior according to your needs. Please refer to the official documentation for more details and advanced usage.
That’s it! You’re now ready to handle gestures using blocks using the SHGestureRecognizerBlocks library.