新的搜索栏。
工作:
[string]" firstName"在搜索时返回正确的值。如果我有3个具有" firstName"的人,以" G"开头(例如(用3个单元格重新加载。
问题:
尽管表具有" firstName"的适当单元格值的表重新加载,但users.append(用户(返回nil和错误的名称已加载到tableView中。
帮助:
搜索完成后,如何将正确的名称加载到tableView?
这是我的代码:
func searchBar(_ searchBar: UISearchBar, textDidChange textSearched: String)->Void {
FIRDatabase.database().reference().child("users").queryOrdered(byChild: "firstname").queryStarting(atValue: textSearched).queryEnding(atValue: textSearched+"u{f8ff}").observe(.value, with: { snapshot in
var users = [User]()
let user = User()
print(user)
for _ in snapshot.children.allObjects as! [FIRDataSnapshot] {
if let dictionary = snapshot.value as? [String: AnyObject]{
user.lastname = dictionary["firstname"] as? String
users.append(user)
}
}
self.users = users
let search = searchCell()
search.firstName.text = user.firstname
self.attempReloadOfTable()
}, withCancel: nil)
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as! searchCell
var user = User()
user = users[indexPath.row]
if let id = user.id{
let ref = FIRDatabase.database().reference().child("users").child(id)
ref.observe(.value, with: { (snapshot) in
cell.lastName.text = user.lastname
cell.firstName.text = user.firstname
})
}
return cell
}
您的问题是,在与块中的用户数据绑定之前,请返回单元格。因为在执行return cell
之后将执行FIRBASE结果查询块中的代码。
我这样编辑了您的代码:
func searchBar(_ searchBar: UISearchBar, textDidChange textSearched: String)->Void {
FIRDatabase.database().reference().child("users").queryOrdered(byChild: "firstname").queryStarting(atValue: textSearched).queryEnding(atValue: textSearched+"u{f8ff}").observe(.value, with: { snapshot in
var users = [User]()
for _ in snapshot.children.allObjects as! [FIRDataSnapshot] {
if let dictionary = snapshot.value as? [String: AnyObject] {
let user = User()
user.lastname = dictionary["firstname"] as? String
print(user)
users.append(user)
}
}
self.users = users
let search = searchCell()
search.firstName.text = user.firstname
self.attempReloadOfTable()
}, withCancel: nil)
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as! searchCell
let user = users[indexPath.row]
cell.lastName.text = user.lastname
cell.firstName.text = user.firstname
return cell
}
希望它对您有用。