斯威夫特刷卡導航調整視圖控制器尺寸

Question

我試圖讓使用此教程視圖控制器，而不是XIB文件輕掃導航：https://www.youtube.com/watch?v=3jAlg5BnYUU

我已經成功與視圖控制器來替代廈門國際銀行文件，但是當我運行應用程序的視圖控制器的寬度小於正常：

，因爲它被相同設定爲與XIB文件我不理解。任何人都知道如何解決此問題？

這裏是我的代碼：

import UIKit 

class ViewController: UIViewController { 

@IBOutlet weak var scrollView: UIScrollView! 

override func viewDidLoad() { 
    super.viewDidLoad() 

    let vc0 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController0") 

    self.addChildViewController(vc0!) 
    self.scrollView.addSubview(vc0!.view) 
    vc0!.didMoveToParentViewController(self) 


    let vc1 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController1") 

    var frame1 = vc1!.view.frame 
    frame1.origin.x = self.view.frame.size.width 
    vc1!.view.frame = frame1 

    self.addChildViewController(vc1!) 
    self.scrollView.addSubview(vc1!.view) 
    vc1!.didMoveToParentViewController(self) 


    let vc2 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController2") 

    var frame2 = vc2!.view.frame 
    frame2.origin.x = self.view.frame.size.width * 2 
    vc2!.view.frame = frame2 

    self.addChildViewController(vc2!) 
    self.scrollView.addSubview(vc2!.view) 
    vc2!.didMoveToParentViewController(self) 


    let vc3 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController3") 

    var frame3 = vc3!.view.frame 
    frame3.origin.x = self.view.frame.size.width * 3 
    vc3!.view.frame = frame3 

    self.addChildViewController(vc3!) 
    self.scrollView.addSubview(vc3!.view) 
    vc3!.didMoveToParentViewController(self) 


    self.scrollView.contentSize = CGSizeMake(self.view.frame.size.width * 4, self.view.frame.size.height - 66) 


} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 


} 

Answer 1

注意使用viewDidLoad中進行設定框架手動是有點冒險，應該儘量避免，因爲邊界是沒有設置。相反，使用viewDidLayoutSubviews來做到這一點，但請看一看，因爲在包含約束的UI元素更改時，該方法始終被調用。

var scrollViewAdded = false 

override func viewDidLayoutSubviews() { 

    super.viewDidLayoutSubviews() 

    if !scrollViewAdded { 

     self.loadSrollView() 

     self.scrollViewAdded = true 
    } 
} 


func loadSrollView() { 

    self.scrollView.pagingEnabled = true 

    let vc0 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController0") 

    self.addChildViewController(vc0!) 
    self.scrollView.addSubview(vc0!.view) 
    vc0!.didMoveToParentViewController(self) 

    let vc1 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController1") 

    var frame1 = vc1!.view.frame 
    frame1.origin.x = self.view.frame.size.width 
    vc1!.view.frame = frame1 

    self.addChildViewController(vc1!) 
    self.scrollView.addSubview(vc1!.view) 
    vc1!.didMoveToParentViewController(self) 

    let vc2 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController2") 

    var frame2 = vc2!.view.frame 
    frame2.origin.x = self.view.frame.size.width * 2 
    vc2!.view.frame = frame2 

    self.addChildViewController(vc2!) 
    self.scrollView.addSubview(vc2!.view) 
    vc2!.didMoveToParentViewController(self) 

    let vc3 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController3") 

    var frame3 = vc3!.view.frame 
    frame3.origin.x = self.view.frame.size.width * 3 
    vc3!.view.frame = frame3 

    self.addChildViewController(vc3!) 
    self.scrollView.addSubview(vc3!.view) 
    vc3!.didMoveToParentViewController(self) 

    self.scrollView.contentSize = CGSizeMake(self.view.frame.size.width * 4, self.view.frame.size.height - 66) 
}