我需要实现类似于此链接的功能。 This is the way i need.
根据此链接，它具有1个ViewController和PageViewController，并且很快完成了。
但是对我来说我有3个ViewController。而且我正在使用swift在没有主脚本的情况下在mvvm中进行开发。因此我需要根据此链接进行开发，但它不应该使用主脚本，而必须使用3个ViewController.So单击前进按钮时，应显示下一个ViewController。类似于单击反向按钮时，应显示前一个ViewController。
我尝试一些示例，但没有得到输出。
我已经有UIPageViewController。
我的代码如下。
型号：-
class HomeModel: NSObject {
var name:String!
init?(dictionary :JSONDictionary) {
guard
let name = dictionary["name"] as? String
else {
return
}
self.name = name
}
}
HomeDataSourceModel：-
class HomeDataSourceModel: NSObject {
var dataListArray:Array<HomeModel>? = []
init(array :Array<[String:Any]>?) {
super.init()
var newArray:Array<[String:Any]> = []
if array == nil{
newArray = self.getJsonDataStored()
print(newArray.count)
}
else{
newArray = array!
}
var datalist:Array<HomeModel> = []
for dict in newArray{
let model = HomeModel(dictionary: dict)
datalist.append(model!)
}
self.dataListArray = datalist
}
}
typealias dummyDataSource = HomeDataSourceModel
extension dummyDataSource{
func getJsonDataStored() ->Array<Dictionary<String,String>>{
let jsonArray = [["name":""],["name":""],["name":""]]as Array<Dictionary<String,String>>
return jsonArray
}
}
pageviewmodel：-
class PageViewModel: NSObject {
var datasourceModel: HomeDataSourceModel
var index:Int?
init(withdatasource newDatasourceModel:HomeDataSourceModel){
datasourceModel = newDatasourceModel
print(datasourceModel.dataListArray?.count)
}
func datafordisplay(objectatindex index: Int) -> HomeModel{
return (datasourceModel.dataListArray?[index])!
}
}
pageviewcontroller：-
class HomeViewController: UIPageViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate {
private var pageViewModel :PageViewModel!
init(transitionStyle style: UIPageViewControllerTransitionStyle, navigationOrientation: UIPageViewControllerNavigationOrientation, options: [String : Any]? = nil, withViewModel viewModel:PageViewModel) {
super.init(transitionStyle: .scroll, navigationOrientation: .horizontal, options: options)
pageViewModel = viewModel
print(pageViewModel.datasourceModel.dataListArray)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
var pageControl = UIPageControl()
override func viewDidLoad() {
super.viewDidLoad()
self.navigationItem.leftBarButtonItem = nil
self.view.backgroundColor = UIColor(red: 0.93, green: 0.86, blue: 1, alpha:1.0)
self.dataSource = self
self.delegate = self
createPageViewController()
self.pageControl.pageIndicatorTintColor = UIColor(red: 0.74, green: 0.69, blue: 0.78, alpha:1.0)
self.pageControl.currentPageIndicatorTintColor = UIColor(red: 0.62, green: 0.31, blue: 0.82, alpha:1.0)
self.pageControl.backgroundColor = UIColor(red: 0.93, green: 0.86, blue: 1, alpha:1.0)
self.pageControl.numberOfPages = pageViewModel.datasourceModel.dataListArray! .count
print(self.pageControl.numberOfPages)
self.view.addSubview(pageControl)
}
fileprivate func createPageViewController() {
if (pageViewModel.datasourceModel.dataListArray?.count)! > 0 {
let firstController = getItemController(0)!
let startingViewControllers = [firstController]
self.setViewControllers(startingViewControllers, direction: UIPageViewControllerNavigationDirection.forward, animated: false, completion: nil)
}
}
fileprivate func setupPageControl() {
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
let itemController = viewController as! HomeController
if itemController.itemIndex > 0 {
return getItemController(itemController.itemIndex-1)
}
return nil
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
print(pageViewController)
let itemController = viewController as! HomeController
if itemController.itemIndex+1 < (pageViewModel.datasourceModel.dataListArray?.count)! {
return getItemController(itemController.itemIndex+1)
}
return nil
}
//fileprivate
func getItemController(_ itemIndex: Int) -> HomeController? {
if itemIndex < (pageViewModel.datasourceModel.dataListArray?.count)! {
let homeViewModel :HomeViewModel = HomeViewModel(withmodel:pageViewModel.datafordisplay(objectatindex: itemIndex))
let ViewController = HomeController(nibName: "HomeController", bundle: nil, withViewModel: homeViewModel)
ViewController.itemIndex = itemIndex
return ViewController
}
return nil
}
func getItemController1(_ itemIndex: Int) {
if itemIndex < (pageViewModel.datasourceModel.dataListArray?.count)! {
let homeViewModel :HomeViewModel = HomeViewModel(withmodel:pageViewModel.datafordisplay(objectatindex: itemIndex))
let ViewController = HomeController(nibName: "HomeController", bundle: nil, withViewModel: homeViewModel)
ViewController.itemindex1 = itemIndex
print(ViewController.itemindex1)
// pageViewController(homeViewModel, viewControllerAfter: ViewController.itemindex1)
}
}
func currentControllerIndex() -> Int {
let pageItemController = self.currentController()
if let controller = pageItemController as? HomeController{
print(controller.itemIndex)
return controller.itemIndex
}
return -1
}
func currentController() -> UIViewController? {
if (self.viewControllers?.count)! > 0 {
return self.viewControllers![0]
}
return nil
}
func pageViewController(
_ pageViewController: UIPageViewController,
willTransitionTo pendingViewControllers:[UIViewController]){
if let itemController = pendingViewControllers[0] as? HomeController {
self.pageControl.currentPage = itemController.itemIndex
}
}
func scrollToNextViewController() {
print(viewControllers?.first)
if let visibleViewController = viewControllers?.first,
let nextViewController =
pageViewController(self, viewControllerAfter: visibleViewController) {
print(nextViewController)
scrollToViewController(nextViewController)
}
}
}
homeviewcontroller：-
class HomeController: UIViewController ,UITableViewDataSource,UITableViewDelegate,UITextFieldDelegate{
var itemIndex: Int = 0
var itemindex1 : Int = 0
@IBOutlet weak var submitbutton: UIButton!
@IBOutlet weak var name: UITextField!
@IBOutlet weak var nextbutton: UIButton!
private var homeViewModel :HomeViewModel!
@IBOutlet weak var tableview1: UITableView!
init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?, withViewModel viewModel:HomeViewModel) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
homeViewModel = viewModel
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
name.delegate = self
// Do any additional setup after loading the view.
}
@IBAction func nextbutton(_ sender: AnyObject) {
}
@IBAction func submitbutton(_ sender: AnyObject) {
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
那么如何使用3 UIViewController在上述链接中实现mvvm？