由于无法识别的选择器发送到崩溃(仅在首次启动后)

时间:2018-05-25 21:49:23

标签: ios swift memory-management

enter image description here我发生了崩溃,但只是第一次安装并运行应用程序。崩溃的原因如下:

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[OnBoardViewController info:]: unrecognized selector sent to instance 0x7f86f4c1f090'

正如您所看到的,选择器info不在班级中。这是OnBoardViewController

import Foundation
import UIKit

class OnboardViewController : UIViewController, UICollectionViewDelegate, UICollectionViewDataSource  {
@IBOutlet var onBoardView : UICollectionView!
@IBOutlet var onBoardViewLayout: UICollectionViewFlowLayout!
@IBOutlet var pageIndicator: UIPageControl!

// MARK: VC lifecycle
override func viewDidLoad() {
    onBoardView.delegate = self
    onBoardView.dataSource = self
}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationController?.setNavigationBarHidden(true, animated: false)
}

override func viewDidLayoutSubviews() {
    configureCollectionView()
}

// MARK: UI
func configureCollectionView () {
    onBoardView.isPagingEnabled = true
    onBoardView.bounces = false
    onBoardView.showsHorizontalScrollIndicator = false
    onBoardViewLayout.itemSize = onBoardView.bounds.size
    onBoardViewLayout.minimumInteritemSpacing = 0.0
    onBoardViewLayout.minimumLineSpacing = 0.0
    onBoardViewLayout.sectionInset = UIEdgeInsets.zero
}

// MARK: Scroll delegates
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
    let currentPage = ceil(scrollView.contentOffset.x / scrollView.bounds.size.width)
    pageIndicator.currentPage = Int(currentPage)
}

// MARK: UICollectionView delegates
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 4
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "onboardCellID", for: indexPath) as! OnboardCell
    cell.screen = indexPath.item
    return cell
}

func numberOfSections(in collectionView: UICollectionView) -> Int {
    return 1
}

}

在此次崩溃后,我重新启动了应用程序,它不再崩溃。如果我删除该应用程序,再次安装并启动它,则会重复相同的崩溃。

enter image description here

0 个答案:

没有答案