2016-08-16 2 views
0

Я использую следующий код для создания PageViewController. Мой вопрос в том, как я могу отключить или включить прокрутку страницы в моем «Front» и «Back» viewController?Отключение и включение прокрутки страницы (Swift)

class PageController: UIPageViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate { 

var pages = [UIViewController]() 

override func viewDidLoad() { 
    super.viewDidLoad() 

    self.delegate = self 
    self.dataSource = self 

    let page1: UIViewController! = storyboard?.instantiateViewControllerWithIdentifier("Front") 
    let page2: UIViewController! = storyboard?.instantiateViewControllerWithIdentifier("Back") 

    pages.append(page1) 
    pages.append(page2) 

    setViewControllers([page1], direction: UIPageViewControllerNavigationDirection.Forward, animated: true, completion: nil) 
} 

func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? { 
    let currentIndex = pages.indexOf(viewController)! 
    let previousIndex = abs((currentIndex - 1) % pages.count) 
    return pages[previousIndex] 
} 

func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? { 
    let currentIndex = pages.indexOf(viewController)! 
    let nextIndex = abs((currentIndex + 1) % pages.count) 
    return pages[nextIndex] 
} 

func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int { 
    return pages.count 
} 

func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int { 
    return 0 
} 

}

ответ

1

попробовать этот код:

ViewController.swift

import UIKit 

class PageViewController: UIPageViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate { 

var pages = [UIViewController]() 
var pageContollerEnabled = true 
override func viewDidLoad() { 
    super.viewDidLoad() 

    self.delegate = self 
    self.dataSource = self 

    if let viewController = createViewController("Front") { 
     pages.append(viewController) 
     viewController.tag = pages.count 
     setViewControllers([viewController], direction: UIPageViewControllerNavigationDirection.Forward, animated: true, completion: nil) 
    } 

    if let viewController = createViewController("Back") { 
     pages.append(viewController) 
     viewController.tag = pages.count 
    } 

} 

private func createViewController (identifier:String) -> ViewController? { 
    let viewController = storyboard?.instantiateViewControllerWithIdentifier(identifier) 
    if let viewController = viewController as? ViewController{ 
     viewController.pageViewController = self 
     return viewController 
    } 
    return nil 
} 

func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? { 
    if (pageContollerEnabled) { 
     let currentIndex = pages.indexOf(viewController)! 
     let previousIndex = abs((currentIndex - 1) % pages.count) 
     if let previousViewController = pages[previousIndex] as? ViewController { 
      if previousViewController.tag <= currentIndex { 
       return pages[previousIndex] 
      } 
     } 
    } 
    return nil 

} 

func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? { 
    if (pageContollerEnabled) { 
     let currentIndex = pages.indexOf(viewController)! 
     let nextIndex = abs((currentIndex + 1) % pages.count) 
     if let nextViewController = pages[nextIndex] as? ViewController { 
      if nextViewController.tag > currentIndex { 
       return pages[nextIndex] 
      } 
     } 
    } 
    return nil 

} 


func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int { 
    return pages.count 
} 

func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int { 
    return 0 
} 
} 

ViewController.swift

import UIKit 

class ViewController: UIViewController { 

var pageViewController: PageViewController? 

@IBAction func valueChanged(sender: UISwitch) { 
    NSLog("Swith \(sender.on)") 
    if let pageViewController = self.pageViewController { 
     pageViewController.pageContollerEnabled = sender.on 
    } 
} 
} 

Main.storyboard

enter image description here

<?xml version="1.0" encoding="UTF-8" standalone="no"?> 
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15G31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="uMa-bV-FKZ"> 
<dependencies> 
    <deployment identifier="iOS"/> 
    <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/> 
</dependencies> 
<scenes> 
    <!--Page View Controller--> 
    <scene sceneID="v41-UK-OxZ"> 
     <objects> 
      <pageViewController autoresizesArchivedViewToFullSize="NO" transitionStyle="pageCurl" navigationOrientation="horizontal" spineLocation="min" id="uMa-bV-FKZ" customClass="PageViewController" customModule="stackoverflow_38980301" customModuleProvider="target" sceneMemberID="viewController"/> 
      <placeholder placeholderIdentifier="IBFirstResponder" id="iKI-ej-UeC" userLabel="First Responder" sceneMemberID="firstResponder"/> 
     </objects> 
     <point key="canvasLocation" x="424" y="356"/> 
    </scene> 
    <!--View Controller--> 
    <scene sceneID="rJU-DG-wgp"> 
     <objects> 
      <viewController storyboardIdentifier="Front" useStoryboardIdentifierAsRestorationIdentifier="YES" id="xxX-RS-ZVZ" customClass="ViewController" customModule="stackoverflow_38980301" customModuleProvider="target" sceneMemberID="viewController"> 
       <layoutGuides> 
        <viewControllerLayoutGuide type="top" id="c8s-ud-821"/> 
        <viewControllerLayoutGuide type="bottom" id="JbG-NZ-eP5"/> 
       </layoutGuides> 
       <view key="view" contentMode="scaleToFill" id="rpm-D4-Tqn"> 
        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/> 
        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/> 
        <subviews> 
         <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Front" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="MhC-PV-UBQ"> 
          <rect key="frame" x="280" y="289" width="41" height="21"/> 
          <fontDescription key="fontDescription" type="system" pointSize="17"/> 
          <color key="textColor" cocoaTouchSystemColor="darkTextColor"/> 
          <nil key="highlightedColor"/> 
         </label> 
         <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" on="YES" translatesAutoresizingMaskIntoConstraints="NO" id="OaO-rT-mzv"> 
          <rect key="frame" x="276" y="318" width="51" height="31"/> 
          <connections> 
           <action selector="valueChanged:" destination="xxX-RS-ZVZ" eventType="valueChanged" id="lUx-Cz-lJl"/> 
          </connections> 
         </switch> 
        </subviews> 
        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/> 
        <constraints> 
         <constraint firstItem="OaO-rT-mzv" firstAttribute="centerX" secondItem="MhC-PV-UBQ" secondAttribute="centerX" id="3U1-6y-cKV"/> 
         <constraint firstItem="MhC-PV-UBQ" firstAttribute="centerY" secondItem="rpm-D4-Tqn" secondAttribute="centerY" id="Bge-Ih-jR4"/> 
         <constraint firstItem="OaO-rT-mzv" firstAttribute="top" secondItem="MhC-PV-UBQ" secondAttribute="bottom" constant="8" symbolic="YES" id="gTI-yU-mMe"/> 
         <constraint firstItem="MhC-PV-UBQ" firstAttribute="centerX" secondItem="rpm-D4-Tqn" secondAttribute="centerX" id="rJq-ad-5Ur"/> 
        </constraints> 
       </view> 
      </viewController> 
      <placeholder placeholderIdentifier="IBFirstResponder" id="vQZ-k5-cBN" userLabel="First Responder" sceneMemberID="firstResponder"/> 
     </objects> 
     <point key="canvasLocation" x="1078" y="356"/> 
    </scene> 
    <!--View Controller--> 
    <scene sceneID="636-Kw-KXs"> 
     <objects> 
      <viewController storyboardIdentifier="Back" useStoryboardIdentifierAsRestorationIdentifier="YES" id="ICA-gO-3et" customClass="ViewController" customModule="stackoverflow_38980301" customModuleProvider="target" sceneMemberID="viewController"> 
       <layoutGuides> 
        <viewControllerLayoutGuide type="top" id="z7N-pb-J88"/> 
        <viewControllerLayoutGuide type="bottom" id="wrb-EO-FlO"/> 
       </layoutGuides> 
       <view key="view" contentMode="scaleToFill" id="XiV-R4-9yG"> 
        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/> 
        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/> 
        <subviews> 
         <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Back" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="JHB-ln-wGN"> 
          <rect key="frame" x="281" y="289" width="38" height="21"/> 
          <fontDescription key="fontDescription" type="system" pointSize="17"/> 
          <color key="textColor" cocoaTouchSystemColor="darkTextColor"/> 
          <nil key="highlightedColor"/> 
         </label> 
         <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" on="YES" translatesAutoresizingMaskIntoConstraints="NO" id="MLj-y6-3eJ"> 
          <rect key="frame" x="276" y="318" width="51" height="31"/> 
          <connections> 
           <action selector="valueChanged:" destination="ICA-gO-3et" eventType="valueChanged" id="ae6-jj-HHQ"/> 
          </connections> 
         </switch> 
        </subviews> 
        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/> 
        <constraints> 
         <constraint firstItem="JHB-ln-wGN" firstAttribute="centerX" secondItem="MLj-y6-3eJ" secondAttribute="centerX" id="KOk-1n-svY"/> 
         <constraint firstItem="JHB-ln-wGN" firstAttribute="centerY" secondItem="XiV-R4-9yG" secondAttribute="centerY" id="LQa-xT-oAG"/> 
         <constraint firstItem="MLj-y6-3eJ" firstAttribute="top" secondItem="JHB-ln-wGN" secondAttribute="bottom" constant="8" symbolic="YES" id="WzC-ed-F8F"/> 
         <constraint firstItem="JHB-ln-wGN" firstAttribute="centerX" secondItem="XiV-R4-9yG" secondAttribute="centerX" id="tte-Vg-fy5"/> 
        </constraints> 
       </view> 
      </viewController> 
      <placeholder placeholderIdentifier="IBFirstResponder" id="Q0j-fT-PZ9" userLabel="First Responder" sceneMemberID="firstResponder"/> 
     </objects> 
     <point key="canvasLocation" x="1740" y="356"/> 
    </scene> 
</scenes> 
</document> 
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