（快速）如何通過觸摸按鈕在pageviewcontroller中更改視圖

Question

我正在使用PageViewController和選項卡欄。 我有一個問題是“如何通過觸摸按鈕移動另一種視圖”。 我的應用程序有5個ViewController，它們位於PageViewController 。 PageViewController位於ViewController上。 該ViewController是MainController。 因此，我以大約4：1（PageViewController：標簽欄）分隔了主視圖。 因此，標簽欄位於MainController上，當觸摸標簽項時，MainController可以更改ViewController。

但是我想做的是可以更改ViewController的五個ViewController之一上的按鈕。

該按鈕無權更改ViewController。 因此，我搜索了如何解決此問題，但找不到好的解決方案。

我認為解決方案很短，大約1〜2句話。

我附上了我的代碼，所以希望任何知道如何解決此問題的人都可以幫助我。

我是Swift的新手，請詳細說明

這是MainController的一部分

import UIKit

class ViewController: UIViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate {

var pageViewController: UIPageViewController!
var subVC: [UIViewController] = []
var viewIndex: Int = 0 
var tabIndicator1 = UIView()
var tabIndicator2 = UIView()
var tabIndicator3 = UIView()
var tabIndicator4 = UIView()
var tabIndicator5 = UIView()

var views = [UIView]()

override func viewDidLoad() {
    super.viewDidLoad()

    createVC() // make five ViewControllers

    self.pageViewController = self.storyboard?.instantiateViewController(withIdentifier: "PageViewController") as! UIPageViewController
    self.pageViewController = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: nil)
    self.pageViewController.view.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)

    self.addChildViewController(self.pageViewController)
    self.view.addSubview(self.pageViewController.view)

    let startVC = subVC[0]
    viewIndex = 0
    let viewControllers = NSArray(object: startVC)

    self.pageViewController.setViewControllers(viewControllers as? [UIViewController], direction: .forward, animated: true, completion: nil)
    self.pageViewController.didMove(toParentViewController: self)

    createTabBar() // make Tab Bar
    createIndicator() // make Tab Indicator

    self.pageViewController.dataSource = self
    self.pageViewController.delegate = self

}

...

func createVC() { // I have five ViewController files

    let HomeVC = VCInstance(name: "Home")
    let AccessVC = VCInstance(name: "AccessLog")
    let RegisterVC = VCInstance(name: "Register")
    let SettingVC = VCInstance(name: "Setting")
    let HelpVC = VCInstance(name: "Help")

    subVC = [HomeVC, AccessVC, RegisterVC, SettingVC, HelpVC]

}

func VCInstance(name: String) -> UIViewController {
    return UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: name)
}

....

Answer 1

您可以使用此代碼，可能會對您有所幫助。

 extension UIViewController {

        func goNextPage(animated: Bool = true) {
            guard let currentViewController = self.viewControllers?.first else { return }
            guard let nextViewController = dataSource?.pageViewController(self, viewControllerAfter: currentViewController) else { return }
            setViewControllers([nextViewController], direction: .forward, animated: animated, completion: nil)
        }

        func goPreviousPage(animated: Bool = true) {
            guard let currentViewController = self.viewControllers?.first else { return }
            guard let previousViewController = dataSource?.pageViewController(self, viewControllerBefore: currentViewController) else { return }
            setViewControllers([previousViewController], direction: .reverse, animated: animated, completion: nil)
        }

    }