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我想填充我的tableView與firebase數據庫。用firebase數據庫填充tableView
下面是代碼: -
import UIKit
import Firebase
class FriendsListViewController: UIViewController , UITableViewDataSource, UITableViewDelegate{
@IBOutlet weak var friendsListTableView: UITableView!
let ref = FIRDatabase.database().reference()
var FIRControllerClassHandle : FIRControllerClass = FIRControllerClass()
var imageCell = [UIImage]()
var username = [String]()
var userDesc = [String]()
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
friendsListTableView.alpha = 0
friendsListTableView.delegate = self
friendsListTableView.dataSource = self
populateTable({
self.friendsListTableView.reloadData()
})
}
func populateTable(completionBlock : (() -> Void)){
FIRControllerClassHandle.retrieveFriendListDatabase { (userIdA) in
for a in 1 ... userIdA.count-1 {
repeat {
self.FIRControllerClassHandle.retrieveStorageForFriendListCell(userIdA[a] as! String, completion: { (image) in
print("image transferred in the friendlist block : \(image)")
print("user id in friendList : \(userIdA[a])")
self.imageCell.append(image)
})
self.FIRControllerClassHandle.retrieveDatabaseForFriendListCell(userIdA[a] as! String, completion: { (profile) in
self.username.append((profile["username"] as? String)!)
self.userDesc.append((profile["briefDecription"] as? String)!)
completionBlock()
})
} while(a <= userIdA.count-1)
}
}
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
print("username count in the no of rows : \(username.count)")
return username.count ?? 0
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
print("username in cellForIndexpath : \(self.username)")
let cell = friendsListTableView.dequeueReusableCellWithIdentifier("friendListCell") as! FriendsListTableViewCell
cell.friendListProfileName.text = username[indexPath.row]
cell.friendListProfileDescription.text = userDesc[indexPath.row]
cell.friendListProfilePicture.image = imageCell[indexPath.row]
return cell
}
@IBAction func backBtnAction(sender: UIButton) {
let homePageScene = self.navigationController?.storyboard?.instantiateViewControllerWithIdentifier("HomePageFeedViewControllerVC_ID") as! HomePageFeedViewController
self.navigationController?.pushViewController(homePageScene, animated: true)
}
}
這是運行的無限循環, userIdA是在我所存儲的所有的我的user.uid
self.FIRControllerClassHandle.retrieveStorageForFriendListCell
是在被返回分離FIRController類函數數組用戶 的檔案圖片類似地FIRControllerClassHandle.retrieveDatabaseForFriendListCell
用於檢索數據庫 我將如何解決這個問題?
爲什麼'對於1 ...而不是'0'? – Droppy
因爲我必須在後端初始化數組,所以它需要一個值來初始化它自己...所以在0索引它們是一個虛擬值實際userIdA數組從1開始。 – Dravidian
請儘量避免使用數組 - 將得到你陷入困境。整個過程可能會大大簡化,但沒有看到您的Firebase結構,很難說。你能不能將文章的片段作爲文本發佈(沒有圖片),我們來看看。 – Jay