Question

我正在开发一个引用应用程序，我希望页面（第一个除外）随机化。我不希望人们打开应用程序一遍又一遍地看到相同的初始引号。如果你能回复编辑代码我会非常感激。提前谢谢！

import UIKit

class ModelController: NSObject, UIPageViewControllerDataSource {

    let pageData:NSArray = ["All quotes are from Kanye West, Enjoy!", "I refuse to accept other people's ideas of happiness for me. As if there's a 'one size fits all' standard for happiness","I am the greatest","I still think I'm the greatest.","They say you can rap about anything except for Jesus, that means guns, sex, lies, video tapes, but if I talk about God my record won't get played Huh?"]



override init() {
    super.init()

}

func viewControllerAtIndex(_ index: Int, storyboard: UIStoryboard) -> DataViewController? {
    // Return the data view controller for the given index.
    if (self.pageData.count == 0) || (index >= self.pageData.count) {
        return nil
    }

    // Create a new view controller and pass suitable data.
    let dataViewController = storyboard.instantiateViewController(withIdentifier: "DataViewController") as! DataViewController
    dataViewController.dataObject = self.pageData[index] as! String
    return dataViewController
}

func indexOfViewController(_ viewController: DataViewController) -> Int {
    // Return the index of the given data view controller.
    // For simplicity, this implementation uses a static array of model objects and the view controller stores the model object; you can therefore use the model object to identify the index.
    return pageData.index(of: viewController.dataObject) 
}

// MARK: - Page View Controller Data Source

func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
    var index = self.indexOfViewController(viewController as! DataViewController)
    if (index == 0) || (index == NSNotFound) {
        return nil
    }

    index -= 1
    return self.viewControllerAtIndex(index, storyboard: viewController.storyboard!)
}

func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
    var index = self.indexOfViewController(viewController as! DataViewController)
    if index == NSNotFound {
        return nil
    }

    index += 1
    if index == self.pageData.count {
        return nil
    }
    return self.viewControllerAtIndex(index, storyboard: viewController.storyboard!)

Answer 1

您可以随机化您的引用数组并传递随机数组。查看这些链接： How do I shuffle an array in Swift?和 Shuffle array swift 3

如何随机化页面顺序

1 个答案: