我花了几天的时间来解决这个问题，但我不能。
我收到此错误线程1：当我尝试将Google Firestore中的数据显示到表格视图中时，EXC_BAD_INSTRUCTION（代码= EXC_I386_INVOP，子代码= 0x0）。
我在其他视图控制器（链接到另一个集合数据库）中使用相同的代码，效果很好。我不知道发生了什么，它确实在使我耳目一新。
错误出现在代码// Don't use fatalError here in a real app.
fatalError("Unable to initialize type \(suppliersProducts.self) with dictionary \(document.data())")的此区域
这是完整的代码：
导入UIKit 导入XLPagerTabStrip 导入Firebase 导入FirebaseFirestore 进口翠鸟
class providerProductsCellOne类：UITableViewCell {
@IBOutlet weak var supplierImage: UIImageView!
@IBOutlet weak var supplierName: UILabel!
@IBOutlet weak var supplierPrice: UILabel!
@IBOutlet weak var supplierDescription: UILabel!
}
class allProductsTableViewController：UITableViewController，IndicatorInfoProvider {
// Variables
var products: [suppliersProducts] = []
var filteredSupplier: [suppliersProducts] = []
var selectedIndex: Int!
override func viewDidLoad() {
super.viewDidLoad()
// Hide keyboard
hideKeyboardOrangutan()
// Data sources
tableView.dataSource = self
tableView.delegate = self
query = baseQuery()
print(Firestore.firestore().collection("supplierOneSingle").limit(to: 200))
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
observeQuery()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
stopObserving()
}
fileprivate var query: Query? {
didSet {
if let listener = listener {
listener.remove()
observeQuery()
}
}
}
private var listener: ListenerRegistration?
fileprivate func observeQuery() {
guard let query = query else { return }
stopObserving()
// Display data from Firestore, part one
listener = query.addSnapshotListener { [unowned self] (snapshot, error) in
guard let snapshot = snapshot else {
print("Error fetching snapshot results: \(error!)")
return
}
let models = snapshot.documents.map { (document) -> suppliersProducts in
if let model = suppliersProducts(dictionary: document.data()) {
return model
} else {
// Don't use fatalError here in a real app.
fatalError("Unable to initialize type \(suppliersProducts.self) with dictionary \(document.data())")
}
}
self.products = models
self.tableView.reloadData()
}
}
fileprivate func stopObserving() {
listener?.remove()
}
// Firestore database
fileprivate func baseQuery() -> Query {
return Firestore.firestore().collection("supplierOneSingle").limit(to: 200)
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return products.count
}
// Firestore data
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! supplierProductsCellOne
let product = products[indexPath.row]
let url = URL(string: product.productImageSquare)
cell.supplierName?.text = product.name
cell.supplierDescription?.text = product.description
cell.supplierPrice?.text = product.unitPrice
DispatchQueue.main.async{
cell.supplierImage?.kf.setImage(with: url)
}
return cell
}
// Slider menu indicator
func indicatorInfo(for pagerTabStripController: PagerTabStripViewController) -> IndicatorInfo {
return IndicatorInfo(title: "ALL PRODUCTS")
}
}
这是调试器的说明。
启用新行为时，请审核Date的所有现有用法。在将来的版本中，该行为将更改为新行为，因此，如果不执行这些步骤，则您的应用可能会崩溃。 致命错误：无法初始化类型为provider的产品带字典的[“数量”：1个包装，“产品图片正方形”：https://firebasestorage.googleapis.com/v0/b/honcho-app.appspot.com/o/supplierProducts%2FsquarePhotos%2FProduct-square-5.png?alt=media&token=beff70f8-93e1-44c2-8695-9af27efaccf5，“建议价格”：25000，“类别”：个人护理，“单价”：21000 ，“品牌”：Laurier，“供应商ID”：101，“产品图片矩形”：https://firebasestorage.googleapis.com/v0/b/honcho-app.appspot.com/o/supplierProducts%2FrectanglePhotos%2FProduct-5.png?alt=media&token=520649d0-e76c-45c6-a4eb-c0bdd69eb0f1，“描述”：干燥，干燥的双层空气表面可迅速吸收血液，强大的中心芯将其锁定在内部以防止血液进入泄漏，“大小”：8个填充，“名称”：活动日间填充，“单位SKU”：8992727000048]：文件/Users/eugenio/Documents/yProjects/Honcho/Xcode/merchant-bangkok-bank/merchant/allProductsTableViewController.swift ，第88行 2018-11-23 09：15：31.622656 + 1300 Youtap Merchant [12116：323460]致命错误：无法初始化带有字典[“ Quantity”：1 Pack，“ Product Image Square”：https://firebasestorage.googleapis.com/v0/b/honcho-app.appspot.com/o/supplierProducts%2FsquarePhotos%2FProduct-square-5.png?alt=media&token=beff70f8-93e1-44c2-8695-9af27efaccf5，“建议价格”：25000，“类别”：个人护理，“单价”：21000，“品牌”：Laurier，“供应商ID”：101，“产品图片矩形”：https://firebasestorage.googleapis.com/v0/b/honcho-app.appspot.com/o/supplierProducts%2FrectanglePhotos%2FProduct-5.png?alt=media&token=520649d0-e76c-45c6-a4eb-c0bdd69eb0f1，“描述”：Sofy ，干燥的双层空气层表面迅速吸收血液，强大的中心芯将其锁定在内部以防止泄漏，“大小”：8个打击垫，“名称”：Active Day打击垫，“ Unit SKU”：8992727000048]：file / Users / eugenio /文档/yProjects/Honcho/Xcode/merchant-bangkok-bank/merchant/allProductsTableViewController.swift，第88行 （lldb）
感谢堆帮助
这是SuppliersProducts（词典）的代码
import Foundation
import Firebase
protocol DocumentSerializableSuppliersProducts {
init?(dictionary: [String: Any])
}
struct suppliersProducts {
var brand: String
var category: String
var description: String
var name: String
var productImageRectangle: String
var productImageSquare: String
var quantity: String
var size: String
var suggestedPrice: Int
var supplierID: Int
var unitPrice: Int
var unitSKU: Int
var dictionary: [String: Any] {
return [
"Brand": brand,
"Category": category,
"Description": description,
"Name": name,
"Product Image Rectangle": productImageRectangle,
"Product Image Square": productImageSquare,
"Quantity": quantity,
"Size": size,
"Suggested Price": suggestedPrice,
"Supplier ID": supplierID,
"Unit Price": unitPrice,
"Unit SKU": unitSKU
]
}
}
extension suppliersProducts: DocumentSerializableSuppliersProducts{
init?(dictionary: [String : Any]) {
guard let name = dictionary["Name"] as? String,
let brand = dictionary["Brand"] as? String,
let category = dictionary["Category"] as? String,
let productImageRectangle = dictionary["Product Image Rectangle"] as? String,
let productImageSquare = dictionary["Product Image Square"] as? String,
let quantity = dictionary["Quantity"] as? String,
let size = dictionary["Size"] as? String,
let suggestedPrice = dictionary["Suggested Price"] as? Int,
let supplierID = dictionary["Supplier ID"] as? Int,
let unitPrice = dictionary["Unit Price"] as? Int,
let unitSKU = dictionary["Unit SKU"] as? Int
else {return nil}
let description = dictionary["Description"] as? String
let defaultDescription: String = description ?? "This item has not yet been properly described by our team of writing monkeys"
self.init(brand: brand, category: category, description: defaultDescription, name: name, productImageRectangle: productImageRectangle, productImageSquare: productImageSquare, quantity: quantity, size: size, suggestedPrice: suggestedPrice, supplierID: supplierID, unitPrice: unitPrice, unitSKU: unitSKU)
}
}