change tabItems type to [UIViewController]

Author: simorgh3196

Demo/TabPageViewControllerDemo/ViewController.swift

@@ -25,8 +25,10 @@ class ViewController: UIViewController {
         let tc = TabPageViewController.create()
         let vc1 = UIViewController()
         vc1.view.backgroundColor = UIColor.white
+        vc1.title = "First"
         let vc2 = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "ListViewController")
-        tc.tabItems = [(vc1, "First"), (vc2, "Second")]
+        vc2.title = "Second"
+        tc.tabItems = [vc1, vc2]
         var option = TabPageOption()
         option.tabWidth = view.frame.width / CGFloat(tc.tabItems.count)
         option.hidesTopViewOnSwipeType = .all
@@ -38,15 +40,20 @@ class ViewController: UIViewController {
         let tc = TabPageViewController.create()
         let vc1 = UIViewController()
         vc1.view.backgroundColor = UIColor(red: 251/255, green: 252/255, blue: 149/255, alpha: 1.0)
+        vc1.title = "Mon."
         let vc2 = UIViewController()
         vc2.view.backgroundColor = UIColor(red: 252/255, green: 150/255, blue: 149/255, alpha: 1.0)
+        vc2.title = "Tue."
         let vc3 = UIViewController()
         vc3.view.backgroundColor = UIColor(red: 149/255, green: 218/255, blue: 252/255, alpha: 1.0)
+        vc3.title = "Wed."
         let vc4 = UIViewController()
         vc4.view.backgroundColor = UIColor(red: 149/255, green: 252/255, blue: 197/255, alpha: 1.0)
+        vc4.title = "Thu."
         let vc5 = UIViewController()
         vc5.view.backgroundColor = UIColor(red: 252/255, green: 182/255, blue: 106/255, alpha: 1.0)
-        tc.tabItems = [(vc1, "Mon."), (vc2, "Tue."), (vc3, "Wed."), (vc4, "Thu."), (vc5, "Fri.")]
+        vc5.title = "Fri."
+        tc.tabItems = [vc1, vc2, vc3, vc4, vc5]
         tc.isInfinity = true
         let nc = UINavigationController()
         nc.viewControllers = [tc]

Sources/TabPageViewController.swift

@@ -11,13 +11,13 @@ import UIKit
 open class TabPageViewController: UIPageViewController {
     open var isInfinity: Bool = false
     open var option: TabPageOption = TabPageOption()
-    open var tabItems: [(viewController: UIViewController, title: String)] = []
+    open var tabItems: [UIViewController] = []
 
     var currentIndex: Int? {
         guard let viewController = viewControllers?.first else {
             return nil
         }
-        return tabItems.map{ $0.viewController }.index(of: viewController)
+        return tabItems.index(of: viewController)
     }
     fileprivate var beforeIndex: Int = 0
     fileprivate var tabItemsCount: Int {
@@ -81,7 +81,7 @@ public extension TabPageViewController {
 
         beforeIndex = index
         shouldScrollCurrentBar = false
-        let nextViewControllers: [UIViewController] = [tabItems[index].viewController]
+        let nextViewControllers = [tabItems[index]]
 
         let completion: ((Bool) -> Void) = { [weak self] _ in
             self?.shouldScrollCurrentBar = true
@@ -109,7 +109,7 @@ extension TabPageViewController {
         delegate = self
         automaticallyAdjustsScrollViewInsets = false
 
-        setViewControllers([tabItems[beforeIndex].viewController],
+        setViewControllers([tabItems[beforeIndex]],
                            direction: .forward,
                            animated: false,
                            completion: nil)
@@ -175,7 +175,7 @@ extension TabPageViewController {
 
         view.addConstraints([top, left, right])
 
-        tabView.pageTabItems = tabItems.map({ $0.title})
+        tabView.pageTabItems = tabItems.map { $0.title ?? "" }
         tabView.updateCurrentIndex(beforeIndex, shouldScroll: true)
 
         tabView.pageItemPressedBlock = { [weak self] (index: Int, direction: UIPageViewControllerNavigationDirection) in
@@ -292,8 +292,7 @@ extension TabPageViewController {
 extension TabPageViewController: UIPageViewControllerDataSource {
 
     fileprivate func nextViewController(_ viewController: UIViewController, isAfter: Bool) -> UIViewController? {
-
-        guard var index = tabItems.map({$0.viewController}).index(of: viewController) else {
+        guard var index = tabItems.index(of: viewController) else {
             return nil
         }
 
@@ -312,7 +311,7 @@ extension TabPageViewController: UIPageViewControllerDataSource {
         }
 
         if index >= 0 && index < tabItems.count {
-            return tabItems[index].viewController
+            return tabItems[index]
         }
         return nil
     }