Я хочу выполнить переход, проведя пальцем вправо.
Какая лучшая практика?
Я реализую переход с «пролистывания слева направо» с настраиваемым переходом и распознавателем жестов смахивания.
Вам нужно создать новый файл .swift и использовать segue как класс в свойствах построителя интерфейса.
// Created by David Seek on 25.04.16.
// Copyright © 2016 David Seek. All rights reserved.
//
import UIKit
class FromLeftToRightSegue: UIStoryboardSegue {
override func perform() {
let firstVC = self.sourceViewController.view as UIView!
let secondVC = self.destinationViewController.view as UIView!
let screenWidth = UIScreen.mainScreen().bounds.size.width
let screenHeight = UIScreen.mainScreen().bounds.size.height
secondVC.frame = CGRectMake(-screenWidth, 0, screenWidth, screenHeight)
let window = UIApplication.sharedApplication().keyWindow
window?.insertSubview(secondVC, aboveSubview: firstVC)
// Animate the transition.
UIView.animateWithDuration(0.3, animations: { () -> Void in // set animation duration
firstVC.frame = CGRectOffset(firstVC.frame, 0.0, 0.0) // old screen stay
secondVC.frame = CGRectOffset(secondVC.frame, screenWidth, 0.0) // new screen strave from left to right
}) { (Finished) -> Void in
self.sourceViewController.presentViewController(self.destinationViewController as UIViewController,
animated: false,
completion: nil)
}
}
}
Распознаватель жестов смахивания также необходимо ввести в новый файл .swift:
import Foundation
import UIKit
//
// UISwipeGestureRecognizer.h
// UIKit
//
// Copyright (c) 2009-2015 Apple Inc. All rights reserved.
//
// Recognizes: when numberOfTouchesRequired have moved mostly in the specified direction, enough to be considered a swipe.
// a slow swipe requires high directional precision but a small distance
// a fast swipe requires low directional precision but a large distance
// Touch Location Behaviors:
// locationInView: location where the swipe began. this is the centroid if more than one touch was involved
// locationOfTouch:inView: location of a particular touch when the swipe began
public struct UISwipeGestureRecognizerDirection : OptionSetType {
public init(rawValue: UInt)
public static var Right: UISwipeGestureRecognizerDirection { get }
public static var Left: UISwipeGestureRecognizerDirection { get }
public static var Up: UISwipeGestureRecognizerDirection { get }
public static var Down: UISwipeGestureRecognizerDirection { get }
}
@available(iOS 3.2, *)
public class UISwipeGestureRecognizer : UIGestureRecognizer {
public var numberOfTouchesRequired: Int // default is 1. the number of fingers that must swipe
public var direction: UISwipeGestureRecognizerDirection // default is UISwipeGestureRecognizerDirectionRight. the desired direction of the swipe. multiple directions may be specified if they will result in the same behavior (for example, UITableView swipe delete)
}
Вызывается внутри желаемого ViewController.swift:
private var swipeGestureRecognizer: UISwipeGestureRecognizer?
override func viewDidLoad() {
super.viewDidLoad()
swipeGestureRecognizer = MySwipeGestureRecognizer(target: self, swipeLeftSegue: "yourSwipeLeftSegue", swipeRightSeque: "yourSwipeRightSegue")
view.addGestureRecognizer(swipeGestureRecognizer!)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "yourSwipeLeftSegue" {
//your code goes here
}
}
Надеюсь, это сработает для вас, если у вас есть вопросы, дайте мне знать.