Get index tab selected

Author: ga-tungnguyen

Demo/TabPageViewControllerDemo/ViewController.swift

@@ -31,6 +31,10 @@ class ViewController: UIViewController {
         option.tabWidth = view.frame.width / CGFloat(tc.tabItems.count)
         option.hidesTopViewOnSwipeType = .all
         tc.option = option
+        tc.indexSelected = { (index) in
+            print("--------------------------------")
+            print(index)
+        }
         navigationController?.pushViewController(tc, animated: true)
     }
 
@@ -54,6 +58,10 @@ class ViewController: UIViewController {
         option.currentColor = UIColor(red: 246/255, green: 175/255, blue: 32/255, alpha: 1.0)
         option.tabMargin = 30.0
         tc.option = option
+        tc.indexSelected = { (index) in
+            print("--------------------------------")
+            print(index)
+        }
         navigationController?.pushViewController(tc, animated: true)
     }
 }

Sources/TabPageViewController.swift

@@ -12,7 +12,8 @@ open class TabPageViewController: UIPageViewController {
     open var isInfinity: Bool = false
     open var option: TabPageOption = TabPageOption()
     open var tabItems: [(viewController: UIViewController, title: String)] = []
-
+    open var indexSelected: ((Int) -> Void)?
+    
     var currentIndex: Int? {
         guard let viewController = viewControllers?.first else {
             return nil
@@ -179,6 +180,7 @@ extension TabPageViewController {
         tabView.updateCurrentIndex(beforeIndex, shouldScroll: true)
 
         tabView.pageItemPressedBlock = { [weak self] (index: Int, direction: UIPageViewControllerNavigationDirection) in
+            self?.indexSelected?(index)
             self?.displayControllerWithIndex(index, direction: direction, animated: true)
         }
 
@@ -296,7 +298,7 @@ extension TabPageViewController: UIPageViewControllerDataSource {
         guard var index = tabItems.map({$0.viewController}).index(of: viewController) else {
             return nil
         }
-
+        self.indexSelected?(index)
         if isAfter {
             index += 1
         } else {