我有一些非常有效的uitableview代码。这是代码。
import UIKit
import Alamofire
import ObjectMapper
import SwiftyJSON
import FirebaseAuth
import FirebaseStorage
class HomeViewController: UIViewController, UITableViewDataSource, UITableViewDelegate{
// @IBOutlet weak var symbolLbl: UILabel!
// @IBOutlet weak var BidLbl: UILabel!
var NumberofRows = 0
let stockURL = "https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22+GRPN+SIRI+TVIX+EVOK+ZNGA+EPRS+TKAI+EBIO+DELT+SQNM+ALIM+ODP+ASTI+GBSN+FATE+BLDP+ETRM+GALE+VSTM+BIND+GEVO+DRAM+AMDA+BIOD+VNR+GLUU+AXAS+INFI+BLDP+SGYP+HLIT+ZIOP+XGTI+CIDM+CPLP+ORIG+DRRX+MNKD+GLBS+GERN+IMGN+IMMU+GLBS+GERN+IMGN+IMMU+GLBL+REXX+VIP+NETE+EXTR+CLNE+EBIO+ULTR+AAPL+TSLA+%22)&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&format=json"
//var StockArray = [String]()
var BidArray = [Double]()
var ChangeArray = [Double]()
struct combinedStock {
var symbol: String = ""
var bid : Double = 0.0
var change: Double = 0.0
}
var stockArray = [combinedStock]()
@IBOutlet weak var tableView: UITableView!
// @IBOutlet weak var StockSymbolLbl: UILabel!
// @IBOutlet weak var BidSymbolLbl: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
getJSON()
automaticallyAdjustsScrollViewInsets = false
tableView.dataSource = self
tableView.delegate = self
tableView.registerNib(UINib(nibName: "StockHome", bundle: NSBundle.mainBundle()),forCellReuseIdentifier: "stockHome")
tableView.rowHeight = 60
// StockSymbolLbl.text = ""
// BidSymbolLbl.text = ""
}
@IBAction func logout(sender: AnyObject) {
let actionSheetController = UIAlertController(title: "Please Selecet", message: "Option to select", preferredStyle: UIAlertControllerStyle.ActionSheet)
let cancelActionButton = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel) { (action) in
print("Cancel")
}
actionSheetController.addAction(cancelActionButton)
let profileActionButton = UIAlertAction(title: "Profile", style: UIAlertActionStyle.Default) { (action) in
let profileVC = self.storyboard?.instantiateViewControllerWithIdentifier("profileViewConrtoller") as! ProfileTableViewController
self.navigationController?.pushViewController(profileVC, animated: true)
}
actionSheetController.addAction(profileActionButton)
let logoutAction = UIAlertAction(title: "Log Out", style: UIAlertActionStyle.Default) { (action) in
print("log out")
self.logoutDidTapped()
}
actionSheetController.addAction(logoutAction)
self.presentViewController(actionSheetController, animated: true, completion: nil)
}
func logoutDidTapped() {
DataService.dataService.logout()
}
func getJSON(){
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {
let url = NSURL(string: self.stockURL)
let request = NSURLRequest(URL: url!)
let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
let task = session.dataTaskWithRequest(request) { (data, response, error) -> Void in
if error == nil {
let swiftyJSON = JSON(data: data!)
let Symbol: String? = swiftyJSON["query"]["results"]["quote"][0]["symbol"].stringValue
let bid: String? = swiftyJSON["query"]["results"]["quote"][0]["Bid"].stringValue
let change: String? = swiftyJSON["query"]["results"]["quote"][0]["Change"].stringValue
print(change!)
print(Symbol!)
print(bid!)
dispatch_async(dispatch_get_main_queue()) {
// self.StockSymbolLbl.text? = "\(Symbol!)"
// self.BidSymbolLbl.text? = "\(bid!)"
self.NumberofRows = swiftyJSON["query"]["results"]["quote"].count
for i in 0...self.NumberofRows {
var stockcount = 0
stockcount += i
let Stock = swiftyJSON["query"]["results"]["quote"][stockcount]["symbol"].stringValue
let Bid = swiftyJSON["query"]["results"]["quote"][stockcount]["Bid"].doubleValue
let Change = swiftyJSON["query"]["results"]["quote"][stockcount]["Change"].doubleValue
let homestocks = combinedStock(symbol: Stock, bid: Bid, change: Change)
// self.StockArray.append(Stock)
// print(Stock)
// self.BidArray.append(Bid)
// print(Bid)
// self.ChangeArray.append(Change)
// p
print(Change)
self.stockArray.append(homestocks)
}
self.stockArray = self.stockArray.sort({
return $0.change > $1.change
})
self.tableView.reloadData()
}
}else{
print("There was an error")
}
}
task.resume()
}
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return NumberofRows
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell: StockHome = tableView.dequeueReusableCellWithIdentifier("stockHome", forIndexPath: indexPath) as! StockHome
if stockArray.count != 0{
cell.symbolLbl?.text = stockArray[indexPath.row].symbol
let bid = stockArray[indexPath.row].bid
let changeRate = stockArray[indexPath.row].change
cell.bidLbl?.text = "\(bid)" + " USD "
cell.changeLbl?.text = "\(changeRate)" + " %"
}
print(self.stockArray)
return cell
}
func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
switch stockArray[indexPath.row].change {
case let x where x < 0.0:
cell.backgroundColor = UIColor(red: 255.0/255.0, green: 59.0/255.0, blue: 48.0/255.0, alpha: 1.0)
case let x where x > 0.0:
cell.backgroundColor = UIColor(red: 76.0/255.0, green: 217.0/255.0, blue: 100.0/255.0, alpha: 1.0)
case let x:
cell.backgroundColor = UIColor(red: 44.0/255.0, green: 186.0/255.0, blue: 231.0/255.0, alpha: 1.0)
}
cell.textLabel!.textColor = UIColor.whiteColor()
}
}
我正在尝试将视图从tableview更改为集合视图。我这样做了，但没有显示任何内容。在我将背景改为白色之前，我受到了黑屏的欢迎。这是我的集合视图的代码
import UIKit
import Alamofire
import ObjectMapper
import SwiftyJSON
import FirebaseAuth
import FirebaseStorage
class StockViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
var NumberofRows = 0
let stockURL = "https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22+GRPN+SIRI+TVIX+EVOK+ZNGA+EPRS+TKAI+EBIO+DELT+SQNM+ALIM+ODP+ASTI+GBSN+FATE+BLDP+ETRM+GALE+VSTM+BIND+GEVO+DRAM+AMDA+BIOD+VNR+GLUU+AXAS+INFI+BLDP+SGYP+HLIT+ZIOP+XGTI+CIDM+CPLP+ORIG+DRRX+MNKD+GLBS+GERN+IMGN+IMMU+GLBS+GERN+IMGN+IMMU+GLBL+REXX+VIP+NETE+EXTR+CLNE+EBIO+ULTR+AAPL+TSLA+%22)&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&format=json"
var BidArray = [Double]()
var ChangeArray = [Double]()
struct combinedStock {
var symbol: String = ""
var bid : Double = 0.0
var change: Double = 0.0
}
var stockArray = [combinedStock]()
@IBOutlet weak var collectionview: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
automaticallyAdjustsScrollViewInsets = false
collectionview.dataSource = self
collectionview.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func getJSON(){
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {
let url = NSURL(string: self.stockURL)
let request = NSURLRequest(URL: url!)
let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
let task = session.dataTaskWithRequest(request) { (data, response, error) -> Void in
if error == nil {
let swiftyJSON = JSON(data: data!)
let Symbol: String? = swiftyJSON["query"]["results"]["quote"][0]["symbol"].stringValue
let bid: String? = swiftyJSON["query"]["results"]["quote"][0]["Bid"].stringValue
let change: String? = swiftyJSON["query"]["results"]["quote"][0]["Change"].stringValue
print(change!)
print(Symbol!)
print(bid!)
dispatch_async(dispatch_get_main_queue()) {
// self.StockSymbolLbl.text? = "\(Symbol!)"
// self.BidSymbolLbl.text? = "\(bid!)"
self.NumberofRows = swiftyJSON["query"]["results"]["quote"].count
for i in 0...self.NumberofRows {
var stockcount = 0
stockcount += i
let Stock = swiftyJSON["query"]["results"]["quote"][stockcount]["symbol"].stringValue
let Bid = swiftyJSON["query"]["results"]["quote"][stockcount]["Bid"].doubleValue
let Change = swiftyJSON["query"]["results"]["quote"][stockcount]["Change"].doubleValue
let homestocks = combinedStock(symbol: Stock, bid: Bid, change: Change)
// self.StockArray.append(Stock)
// print(Stock)
// self.BidArray.append(Bid)
// print(Bid)
// self.ChangeArray.append(Change)
// p
print(Change)
self.stockArray.append(homestocks)
}
self.stockArray = self.stockArray.sort({
return $0.change > $1.change
})
self.collectionview.reloadData()
}
}else{
print("There was an error")
}
}
task.resume()
}
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return NumberofRows
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionview.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! homeCollectionViewCell
if stockArray.count != 0{
cell.symbolLbl?.text = self.stockArray[indexPath.item].symbol
let bid = stockArray[indexPath.item].change
let changeRate = stockArray[indexPath.item].change
cell.bidLbl?.text = "\(bid)" + " USD "
cell.percentLbl?.text = "\(changeRate)" + " %"
}
print(self.stockArray)
return cell
}
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
print("You selected cell #\(indexPath.row)!")
}
}
你可以说它们非常相似。我很想知道我错过了什么或做错了什么。谢谢。
P.S。这是uicollectionviewcell的代码
import UIKit
class homeCollectionViewCell: UICollectionViewCell {
@IBOutlet weak var symbolLbl: UILabel!
@IBOutlet weak var percentLbl: UILabel!
@IBOutlet weak var bidLbl: UILabel!
}
谢谢。