我正在通过使用firebase构建一个swift应用程序,在我的firebase数据库中我有(childs)餐馆的信息。我已成功将firebase集成到我的项目中,并通过使用SDWebImage使用firebase数据填充我的tableview。但是现在我遇到了另一个与单击我的tableview单元格时使用segue和从firebase数据库中检索正确数据相关的问题。在过去,我已经使用detailViewControllers成功构建了几个swift和objective-c表视图,但这是我第一次使用firebase。 先感谢您 :) 在下面,我从xcode传递我的代码:
主要表格视图: 导入UIKit 导入Firebase 导入FirebaseAuth 导入FirebaseDatabase 导入FirebaseStorage 导入SDWebImage
类MainTableVC:UITableViewController {
@IBOutlet weak var MenuBar: UIBarButtonItem!
var barName = [String]()
var barMainImage = [String]()
var barAddress = [String]()
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: UIBarButtonItemStyle.plain, target: nil, action: nil)
MenuBar.target = self.revealViewController()
MenuBar.action = #selector(SWRevealViewController.revealToggle(_:))
self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
getDataFromServer()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func getDataFromServer(){
Database.database().reference().child("aktau").observe(DataEventType.childAdded, with: { (snapshot) in
let values = snapshot.value! as! NSDictionary
let posts = values["barmain"] as! NSDictionary
let postIDs = posts.allKeys
for id in postIDs{
let singlePost = posts[id] as! NSDictionary
self.barName.append(singlePost["barname"] as! String)
self.barAddress.append(singlePost["baraddress"] as! String)
self.barMainImage.append(singlePost["barmainimage"] as! String)
}
self.tableView.reloadData()
})
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return barName.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "RestoCell", for: indexPath) as! ViewControllerCell
cell.RestName.text = barName[indexPath.row]
cell.RestAddress.text = barAddress[indexPath.row]
cell.RestImage.sd_setImage(with: URL(string: barMainImage[indexPath.row]))
return cell
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if (segue.identifier == "DetailView") {
let VC = segue.destination as! DetailViewController
VC.RestNameData = barName
}
} } barName问题 -
无法指定类型' [String]'的值输入' String?'
我的detailViewController 除了BarName,BarAddress和BarMainImage之外 - 我想包括短栏信息和开放时间。
导入UIKit 导入Firebase 导入FirebaseAuth 导入FirebaseDatabase 导入FirebaseStorage 导入SDWebImage
class DetailViewController:UIViewController {
@IBOutlet weak var MyScroll: UIScrollView!
@IBOutlet weak var RestDetailView: UIView!
@IBOutlet weak var restName: UILabel!
@IBOutlet weak var restTypeOfFood: UILabel!
@IBOutlet weak var restClockImage: UIImageView!
@IBOutlet weak var restOpenHours: UILabel!
@IBOutlet weak var restInfoView: UIView!
@IBOutlet weak var averagePrice: UILabel!
@IBOutlet weak var InfoAboutRest: UILabel!
@IBOutlet weak var FullAddressLabel: UILabel!
@IBOutlet weak var OpeningHoursLabel: UILabel!
var RestNameData: String?
override func viewDidLoad() {
super.viewDidLoad()
self.RestDetailView.layer.borderColor = UIColor.white.cgColor
self.RestDetailView.layer.borderWidth = 1
self.restInfoView.layer.borderColor = UIColor.white.cgColor
self.restInfoView.layer.borderWidth = 1
if RestNameData.text == "" {
}
}
}
我的Firebase数据库树: enter image description here
答案 0 :(得分:1)
这是解决您面临的问题的一种方法。首先,最好使用单个变量来保存您在表格中显示的对象集合:即
// Define your model
struct Bar {
var name: String
var image: String
var address: String
}
// Change your variables
var bars = [Bar]()
var selectedBar: Bar?
其次,您需要在选择单元格时获得单个bar
对象。即。
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
selectedBar = bars[indexPath.row]
}
在进行segueing时,您可以将其注入detailsVC
,如下所示:
details.selectedBar = selectedBar
您已完成selectedBar
个对象以充气您的用户界面,而不仅仅是String
。
示例添加:我创建了一个执行所需功能的示例。在拉取代码时执行pod安装。这是我的数据库的样子: