大家好，我在尝试将数据从 tableview 传递到另一个 view controller 时遇到了麻烦。我有一个显示每个用户列表的 TableView ，但是当我单击一个用户时，它会转到下一个 View Controller 而不显示该特定用户的任何数据。下面的代码与我遵循的示例几乎相同，但出于某种原因，它对我不起作用。请帮忙，我试过寻找解决方案但找不到任何东西。我还使用 firebase 来存储和检索我的数据。提前致谢
@IBOutlet weak var searchTableView: UITableView!
var profiles = [user]()
var ref: FIRDatabaseReference!
override func viewdidload(){
databaseRef = FIRDatabase.database().reference()
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
performSegue(withIdentifier: "guestSegue", sender: self)
self.searchTableView.deselectRow(at: indexPath as IndexPath, animated: true)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "guestSegue" {
if let indexpath = searchTableView.indexPathForSelectedRow {
let guestVC = segue.destination as! guestProfileViewController
guestVC.ref = profiles[indexpath.row].ref
}
}
}
用户数组
class User {
var backgroundProfileImage: String!
var fullName: String!
var profilePic: String!
var ref: FIRDatabaseReference!
var key: String
init(backgroundProfileImage: String, fullName: String, profilePic: String, key: String = ""){
self.backgroundProfileImage = backgroundProfileImage
self.fullName = fullName
self.profilePic = profilePic
self.key = key
self.ref = FIRDatabase.database().reference()
}
init(snapshot: FIRDataSnapshot){
self.backgroundProfileImage = value["backgroundProfileImage"] as! String!
self.fullName = (snapshot.value as! NSDictionary)["fullName"] as! String
self.profilePic = (snapshot.value as! NSDictionary)["profilePic"] as! String
self.uid = (snapshot.value as! NSDictionary)["uid"] as! String!
self.key = snapshot.key
self.ref = snapshot.ref
}
guest View Controller
class guestProfileViewController: UIViewController, UINavigationControllerDelegate {
@IBOutlet weak var profileImage: UIImage!
@IBOutlet weak var backgroundProfileImage: UIImageView!
@IBOutlet weak var fullNameLabel: UILabel!
var ref: FIRDatabaseReference?
override func viewDidLoad() {
super.viewDidLoad()
ref = FIRDatabase.database().reference()
loadProfileData()
}
func loadProfileData(){
if let ref = ref {
ref.observe(.value, with: { (user) in
let user: User = User(snapshot: user)
self.fullNameLabel.text = user.fullName
self.profileImage.sd_setImage(with: URL(string: user.profilePic), placeholderImage: UIImage(named: "default"))
self.backgroundProfileImage.sd_setImage(with: URL(string: user.backgroundProfileImage), placeholderImage: UIImage(named: "default_1"))
})
}
}
}
最佳答案
ref 正在 guestProfileViewController 的 viewDidLoad() 中设置。尝试删除该位，因为您似乎希望 ref 等于用户的 ref。
关于ios - 如何在 tableview 单元格之间将数据从 firebase 传递到 View Controller ？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43723308/