swift 错误 : Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, 子代码 = 0x0)

Question

当我尝试启动我的应用程序时，出现两个看起来像是内部断点的错误，但我无法删除它们，错误消息是:Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0) 这些是接收错误的代码行(如果需要我可以提供整个 View Controller ):

Interest(title: "We Love Traveling Around the World", description: "We love backpack and adventures! We walked to Antartica yesterday, and camped with some cute pinguines, and talked about this wonderful app idea. 🐧⛺️✨", featuredImage: UIImage(named: "r1")!),

和

private var interests = Interest.createInterests()

编辑:兴趣代码:

import UIKit

class HomeViewController: UIViewController
{
    // MARK: - IBOutlets

    @IBOutlet weak var backgroundImageView: UIImageView!
    @IBOutlet weak var collectionView: UICollectionView!

    @IBOutlet weak var currentUserProfileImageButton: UIButton!
    @IBOutlet weak var currentUserFullNameButton: UIButton!

    // MARK: - UICollectionViewDataSource
    private var interests = Interest.createInterests()

    override func preferredStatusBarStyle() -> UIStatusBarStyle {
        return .LightContent
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    private struct Storyboard {
        static let CellIdentifier = "Interest Cell"
    }
}

extension HomeViewController : UICollectionViewDataSource
{
    func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
        return 1
    }

    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
    {
        return interests.count
    }

    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell
    {
        let cell = collectionView.dequeueReusableCellWithReuseIdentifier(Storyboard.CellIdentifier, forIndexPath: indexPath) as! InterestCollectionViewCell

        cell.interest = self.interests[indexPath.item]

        return cell
    }
}

extension HomeViewController : UIScrollViewDelegate
{
    func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>)
    {
        let layout = self.collectionView?.collectionViewLayout as! UICollectionViewFlowLayout
        let cellWidthIncludingSpacing = layout.itemSize.width + layout.minimumLineSpacing

        var offset = targetContentOffset.memory
        let index = (offset.x + scrollView.contentInset.left) / cellWidthIncludingSpacing
        let roundedIndex = round(index)

        offset = CGPoint(x: roundedIndex * cellWidthIncludingSpacing - scrollView.contentInset.left, y: -scrollView.contentInset.top)
        targetContentOffset.memory = offset
    }
}

Answer 1

您似乎没有名称为 r1 的图片。当您尝试使用 UIImage(named: "r1")! 展开它时，应用会崩溃。在将对象 UIImage 传递给 Interest

的 init 之前，尝试检查对象是否已创建