通过下拉刷新逐一获取行，想要在 viewdidload 上的整个数组
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【中文标题】通过下拉刷新逐一获取行，想要在 viewdidload 上的整个数组【英文标题】：Getting rows one by one on refreshing by pulling down ,wanted whole array on viewdidload 【发布时间】：2019-04-05 12:43:39 【问题描述】：当我通过下拉刷新控制器重新加载 tableview 时，它会在每次刷新时让我一个接一个地获取行。我想要（视图确实加载）和刷新中的所有行数据。 表视图在视图控制器中，我在每次刷新/重新加载时获得一行，但希望所有行都打开（视图确实加载）并刷新。 当我打开视图时，我得到了一行，当我刷新视图时，我又得到了一行，但希望在（视图确实加载）和刷新控制中一次性拥有所有行。 共有三种方法（视图确实加载）/视图将出现/刷新控件/我想要 viewdidload 上的 cartData 的整个值。
public struct FavouriteCart
var p_name : String!
var p_price : String!
var p_id : String!
var qty: String!
public init(p_name: String , p_price: String , p_id : String, qty: String)
self.p_name = p_name
self.p_price = p_price
self.p_id = p_id
self.qty = qty
public struct favSection
var favitems: [FavouriteCart]
public init(favitems: [FavouriteCart] )
self.favitems = favitems
override func viewDidLoad()
super.viewDidLoad()
//self.getFav()
// self.reloadInputViews()
// self.getFav()
self.viewWillAppear(true)
self.updateTableview()
if btn2 != btn3
lblPreorder.isHidden = true
lblOrdermethod.isHidden = false
print("BUTTONCLICKED")
UserDefaults.standard.removeObject(forKey: "button1")
else if btn2 == btn3
lblPreorder.isHidden = false
lblOrdermethod.isHidden = true
print("BUTTON-NOT-CLICKED")
UserDefaults.standard.removeObject(forKey: "button1")
// self.view.layoutIfNeeded()
// self.view.setNeedsDisplay()
// self.getFav()
// self.updateTableview()
self.tableView.dataSource = self
self.tableView.delegate = self
print("111111111 -> \(cartid)")
self.view.addSubview(self.tableView)
if #available(ios 10.0, *)
tableView.refreshControl = refreshControl
else
tableView.addSubview(refreshControl)
refreshControl.addTarget(self, action: #selector(newCartViewController.refreshData), for: UIControlEvents.valueChanged)
//
override func viewWillAppear(_ animated: Bool)
super.viewWillAppear(animated)
self.refreshData()
// self.refreshData()
// self.getFav()
// self.updateTableview()
@objc func refreshData()
self.getFav()
self.getTotal1()
self.updateTableview()
self.refreshControl.endRefreshing()
func updateTableview()
DispatchQueue.main.async
self.tableView.reloadData()
// Mark: getting all cart items:-->
func getFav()
let request = getApi.displaycartGetWithRequestBuilder(restId: "17", cartId:cartid!)
Alamofire.request(request.URLString, method: .get , parameters: nil, encoding: JSONEncoding.default)
.responseJSON response in
print("123321/\(response)")
let res = response
print("101res/\(res)")
let total = self.cartData
print("cartd1/\(total)")
if let value = response.value as? [String: AnyObject]
if let success = value["error"] as? Bool
if success == false
print("2222/\(response)")
if let response = value["cartdata"] as? [String: AnyObject]
let cart = response["simple"] as! [[String: AnyObject]]
var itemsdata: [FavouriteCart] = []
for (_ , value) in cart.enumerated()
let obj = value as! [String:AnyObject]
let p_name = obj["p_name"] as! String
let p_price = obj["p_price"] as! String
let p_id = obj["p_id"] as! String
let qty = obj["qty"] as! String
var prid = p_id as! String
print("stirng ID - > /\(p_id)")
let item = FavouriteCart(p_name: p_name, p_price: p_price, p_id: p_id, qty: qty)
itemsdata.append(item)
// self.cartData.append(favitems)
print("hiiooooooooooooooooooooooo/\(itemsdata)")
self.cartData.append(favSection(favitems: itemsdata))
self.tableView.reloadData()
else
let myAlert = UIAlertController(title:"Alert",message:value["error_msg"] as? String,preferredStyle:UIAlertControllerStyle.alert)
let okAction = UIAlertAction(title:"OK",style:UIAlertActionStyle.default , handler: nil)
myAlert.addAction(okAction)
// Mark:--> Delete items from cart.
// func delFav(p_id: String ,completionHandler: @escaping (Bool) -> Void)
func delFav(product_id: String, completionHandler: @escaping (Bool) -> Void)
//var product1 = UserDefaults.standard.object(forKey: "p_id")
//print("this is my \(product1)")
let request = getApi.deleteproductcartGetWithRequestBuilder(restId: "17", cartId: cartid!, productId: product_id , freeDish: "none", type: "simple")
Alamofire.request(request.URLString, method: .delete , parameters: nil, encoding: JSONEncoding.default)
.responseJSON response in
print("del favvvvvvvvv\(response)")
//print(response)
if let value = response.value as? [String: AnyObject]
if let success = value["error"] as? Bool
if success == false
let response = value["cartdata"] as? [String]
print("10001 - > /\(response)")
//self.tableView.reloadData()
else
print("error message")
// completionHandler(true)
func delterow(product_id: String)
self.delFav(product_id: product_id, completionHandler: sucess in
if sucess
print("DELETED_ITEM")
)
extension newCartViewController: UITableViewDelegate , UITableViewDataSource
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat
return 90;
// func numberOfSections(in tableView: UITableView) -> Int
// return cartData.count
//
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
// return sectionsData[section].items.count
return cartData.count
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
let cell = tableView.dequeueReusableCell(withIdentifier: "cartTablecell", for: indexPath) as! cartTableViewCell
let item: FavouriteCart = cartData[indexPath.section].favitems[indexPath.row]
cell.btnsub1.tag = indexPath.row
cell.btnadd1.tag = indexPath.row
cell.lblItemName.text = item.p_name
cell.productPrice.text = item.p_price
cell.lblprice.text = item.p_price
return cell
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool
return true
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath)
if (editingStyle == .delete)
let item: FavouriteCart = cartData[indexPath.section].favitems[indexPath.row]
self.delterow(product_id: item.p_id)
self.tableView.reloadData()
【问题讨论】：
从 viewDidLoad 中取消注释 self.getFav() 这是大量代码（以及空行、打印行和注释行），您能否通过使其更紧凑并删除与您的问题无关的任何内容来清除它？ 是他们对我的代码的任何解决方案吗？ 【参考方案1】：used completion handler in the api call and reloaded the data in the api call :-----
override func viewDidLoad()
super.viewDidLoad()
// self.getFav()
//self.viewWillAppear(true)
// refreshControl.addTarget(self, action: #selector(viewDidAppear(_:)), for: UIControlEvents.valueChanged)
refreshControl.attributedTitle = NSAttributedString(string: "Pull to refresh")
refreshControl.addTarget(self, action: #selector(newCartViewController.refreshData), for: UIControlEvents.valueChanged)
tableView.addSubview(refreshControl)
if btn2 != btn3
lblPreorder.isHidden = true
lblOrdermethod.isHidden = false
print("BUTTONCLICKED")
UserDefaults.standard.removeObject(forKey: "button1")
else if btn2 == btn3
lblPreorder.isHidden = false
lblOrdermethod.isHidden = true
print("BUTTON-NOT-CLICKED")
UserDefaults.standard.removeObject(forKey: "button1")
// self.view.layoutIfNeeded()
// self.view.setNeedsDisplay()
// self.getFav()
// self.updateTableview()
self.tableView.dataSource = self
self.tableView.delegate = self
print("111111111 -> \(cartid)")
self.view.addSubview(self.tableView)
if #available(iOS 10.0, *)
tableView.refreshControl = refreshControl
else
tableView.addSubview(refreshControl)
override func viewWillAppear(_ animated: Bool)
super.viewWillAppear(animated)
self.updateTableview()
self.getFav()
@objc func refreshData()
self.getFav()
self.getTotal1()
DispatchQueue.main.async
self.refreshControl.endRefreshing()
func updateTableview()
DispatchQueue.main.async
self.tableView.reloadData()
func getFav()
getFav(completionHandler: success in
if success
DispatchQueue.main.async
self.tableView.reloadData()
)
//TOTAL API CALL:
func getTotal1()
let request = getApi.getamountcartGetWithRequestBuilder(restId: "17", cartId: (cartid as? String)!)
Alamofire.request(request.URLString, method: .get , parameters: nil, encoding: JSONEncoding.default)
.responseJSON response in
print("123321#######/\(response)")
let res = response
print("101res/\(res)")
if let value = response.value as? [String: AnyObject]
if let success = value["error"] as? Bool
if success == false
var grandtotal = value["total"] as Any
var gtotal = grandtotal
print("^^^^^/\(gtotal)")
print("@@@@/\(grandtotal)")
UserDefaults.standard.set(10, forKey: "gtotal")
//
// Mark: getting all cart items:-->
func getFav(completionHandler: @escaping (Bool) -> Void)
let request = getApi.displaycartGetWithRequestBuilder(restId: "17", cartId:cartid!)
Alamofire.request(request.URLString, method: .get , parameters: nil, encoding: JSONEncoding.default)
.responseJSON response in
print("123321/\(response)")
let res = response
print("101res/\(res)")
let total = self.cartData
print("cartd1/\(total)")
if let value = response.value as? [String: AnyObject]
if let success = value["error"] as? Bool
if success == false
print("2222/\(response)")
if let response = value["cartdata"] as? [String: AnyObject]
let cart = response["simple"] as! [[String: AnyObject]]
// let total = value["total"] as! [String: Any]
// print("1231231231234/\(total)")
//let userdata: [Favourites] = []
//
var cartData: [FavouriteCart] = []
for (_ , value) in cart.enumerated()
let obj = value as! [String:AnyObject]
let p_name = obj["p_name"] as! String
let p_price = obj["p_price"] as! String
let p_id = obj["p_id"] as! String
let qty = obj["qty"] as! String
// UserDefaults.standard.set(qty, forKey: "qty")
var prid = p_id as! String
print("stirng ID - > /\(p_id)")
let item = FavouriteCart(p_name: p_name, p_price: p_price, p_id: p_id, qty: qty)
cartData.append(item)
DispatchQueue.main.async
print("RELOADED-----ON-----API")
self.cartData.append(favSection(favitems: cartData))
self.tableView.reloadData()
// self.tableView.reloadData()
// self.cartData.append(favitems)
//QTY::::::-------
// let quant = QtyCart(qty: qty)
// self.qtyData.append(quant)
//
//print("hiiooooooooooooooooooooooo/\(itemsdata)")
print("COMPLETION-------------HANDLER")
completionHandler(true)
else
let myAlert = UIAlertController(title:"Alert",message:value["error_msg"] as? String,preferredStyle:UIAlertControllerStyle.alert)
let okAction = UIAlertAction(title:"OK",style:UIAlertActionStyle.default , handler: nil)
myAlert.addAction(okAction)
【讨论】：
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