I'm creating an app just to learn the language mostly. basically I am trying to make an app that allows you to bet fake money on which CSGO team will win. So right now I am at the part of the app that allows a user to create a bet. then the user can see all of the bets he can then accept another users bet. I had all this working before, but I noticed a bug so I decided to fix it. The problem is now it crashes.
I need the app to go to a different screen where it allows you to make a bet on a team. then you click the box and set how much you want to bet on that specific team. Then when you click the submit Button at the bottom, it will upload the users information and the bet information to a Firebase Database. then it will go back to the previous screen that shows all of the bets that have not been filled yet. so his should too.
the problem is when I use POPView controller to go back to the previous view controller that shows the bets it gives me an index out of range error for the table view. the weird thing is if I move the method getBetsFor to viewDidLoad instead of view will appear then it works just fine. The problem with that is it will glitch and it won't show the bet that the user just made.
I know my code is horrific I have tried to put some of it into MVC format, but without further ado here is my code.
the code below is the code that gets the bets from the Firebase Database then puts that data into an array of objects then displays the objects onto the TableView
//
// BetView.swift
// EDraft
//
// Created by Devin Tripp on 3/20/17.
// Copyright © 2017 Devin Tripp. All rights reserved.
//
import UIKit
import Foundation
import Firebase
class BetView: UIViewController, UITableViewDelegate, UITableViewDataSource{
@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var teamOne: UILabel!
@IBOutlet weak var teamTwo: UILabel!
let datRef = FIRDatabase.database().reference(fromURL: "https://edraft-77b47.firebaseio.com/")
var userMoney = String()
let getData = GatherData()
var testies: String?
var teamTOne = String()
var teamTTwo = String()
let screenSize: CGRect = UIScreen.main.bounds
let navBar: UINavigationBar = UINavigationBar(frame: CGRect(x: 0, y: 60, width: UIScreen.main.bounds.width, height: 50))
var navItem = UINavigationItem(title: "Money: ")
let doneItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.add, target: nil, action: #selector(sayHello(sender:)))
let backItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.done, target: nil, action: #selector(goBack(sender:)))
override func viewWillAppear(_ animated: Bool) {
self.getData.betObjects.removeAll()
self.getData.getBetsFor(completion: { (result) in
if result == true {
//show the spinning wheel thing
self.tableView.reloadData()
} else {
// error
}
})
}
override func viewDidLoad() {
super.viewDidLoad()
self.view.addSubview(navBar)
self.tableView.separatorStyle = .none
navItem.rightBarButtonItem = doneItem
navItem.leftBarButtonItem = backItem
navBar.setItems([navItem], animated: false)
teamOne.text = teamTOne
teamTwo.text = teamTTwo
/*
getData.getBetsFor(completion: { (result) in
if result == true {
self.tableView.reloadData()
} else {
}
})
*/
getData.getMoneyFromUser(username: self.getData.userName, completion: { (money) in
if money == true {
let usermoney = String(self.getData.userMoney)
//update the UI
self.navItem.title = "$" + usermoney
print(self.getData.userMoney)
} else {
print("no money found")
}
})
}
func tableView(_ tableView: UITableView, shouldUpdateFocusIn context: UITableViewFocusUpdateContext) -> Bool {
return true
}
func updateBet(_ index: Int, completion: @escaping (_ something: Bool) -> Void) {
let userID = FIRAuth.auth()?.currentUser?.uid
datRef.child("User").child(userID!).observeSingleEvent(of: .value, with: { (snapshot) in
// Get user value
let value = snapshot.value as? NSDictionary
let username = value?["username"] as? String
self.getData.userName = username!
// ...
self.datRef.child("Bets").observe(.childAdded, with: { snapshot in
//
// this is the unique identifier of the bet. eg, -Kfx81GvUxoHpmmMwJ9P
guard let dict = snapshot.value as? [String: AnyHashable] else {
print("failed to get dictionary from Bets.\(self.getData.userName)")
return
}
let values = ["OpposingUsername": self.getData.userName,"Show": "no"]
//var val = self.getData.betObjects[index]
//val.opposingUserName = self.getData.userName
self.datRef.child("Bets").child(self.getData.tieBetToUser[index]).observeSingleEvent(of: .value, with: { (snapshot) in
let anothaValue = snapshot.value as? NSDictionary
let user = anothaValue?["Username"] as? String
if user == self.getData.userName {
// let the user know he cannot bet his own bet
completion(false)
} else {
self.datRef.child("Bets").child(self.getData.tieBetToUser[index]).updateChildValues(values)
completion(true)
}
})
})
}) { (error) in
print(error.localizedDescription)
}
}
func getOpoosingUserNames(_ username: String,_ index: Int, completion: @escaping (_ result: Bool) -> Void ) {
let userID = FIRAuth.auth()?.currentUser?.uid
datRef.child("User").child(userID!).observeSingleEvent(of: .value, with: { (snapshot) in
// Get user value
let value = snapshot.value as? NSDictionary
let username = value?["username"] as? String ?? ""
self.datRef.child("Bets").child(self.getData.tieBetToUser[index]).observeSingleEvent(of: .value, with: { snapshot in
let thisValue = snapshot.value as? NSDictionary
if let thisUserName = thisValue?["Username"] as? String {
self.getData.opposingUserName = thisUserName
completion(true)
} else {
completion(false)
}
})
}) { (error) in
print(error.localizedDescription)
}
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
//if makeEmpty == true {
// return 0
//} else {
print(self.getData.betObjects.count)
return self.getData.betObjects.count
//}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCell(withIdentifier: "cellB", for: indexPath) as! CellB
print(self.getData.betObjects[indexPath.row].userName)
cell.userNameLabel?.text = getData.betObjects[indexPath.row].userName
cell.amountOfBet?.text = getData.betObjects[indexPath.row].betAmount
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let alertController = UIAlertController(title: "Accept Bet", message: "Match the bet of " + getData.amountBets[indexPath.row], preferredStyle: .alert)
let okButton = UIAlertAction(title: "No", style: .default, handler: { (action) -> Void in
print("Ok button tapped")
})
let yesButton = UIAlertAction(title: "Yes", style: .default, handler: { (action) -> Void in
// let them know to wait a second or the bet won't go through
var waitController = UIAlertController(title: "Please Wait", message: "Your bet is being processed", preferredStyle: .alert)
self.present(waitController, animated: true, completion: nil)
//take away the usersMoney
self.takeAwayMoney(self.getData.amountBets[indexPath.row],index: indexPath.row, completion: { (result) in
if result == true {
self.updateBet(indexPath.row, completion: { (result) in
if result == true {
self.getOpoosingUserNames(self.getData.userName, indexPath.row, completion: { (anothaResult) in
if anothaResult == true {
self.dismiss(animated: true, completion: {
let successController = UIAlertController(title: "Success", message: "You have made a bet with " + self.getData.opposingUserName, preferredStyle: .alert)
let okButt = UIAlertAction(title: "Ok", style: .default, handler: nil)
successController.addAction(okButt)
self.present(successController, animated: true, completion: nil)
//lastly delete the opposing UserName
let pathIndex = IndexPath(item: indexPath.row, section: 0)
self.getData.betObjects.remove(at: indexPath.row)
self.tableView.deleteRows(at: [pathIndex], with: .fade)
self.tableView.reloadData()
print("Second")
})
self.getData.getMoneyFromUser(username: self.getData.userName, completion: { (money) in
if money == true {
self.userMoney = String(self.getData.userMoney)
//update the UI
self.navItem.title = "$" + self.userMoney
print(self.userMoney)
} else {
print("no money found")
}
})
} else {
}
//wait for the first view to load in case it uploads to fast
})
} else {
self.dismiss(animated: true, completion: {
let cannotBet = UIAlertController(title: "Failed", message: "You cannot bet with yourself dummy", preferredStyle: .alert)
let okButt = UIAlertAction(title: "Ok", style: .default, handler: nil)
cannotBet.addAction(okButt)
self.present(cannotBet, animated: true, completion: nil)
})
}
})
} else {
// user doesn't have money
//display a alert that lets the user know hes broke
print("this should print once")
self.dismiss(animated: true, completion: {
let brokeController = UIAlertController(title: "Failed", message: "Reason: You don't have enough money!", preferredStyle: .alert)
let okButt = UIAlertAction(title: "Ok", style: .default, handler: nil)
brokeController.addAction(okButt)
self.present(brokeController, animated: true, completion: nil)
})
}
var getResult = ""
print("You have taken away the users money")
print("you made it this far almost there")
//let delayInSeconds = 3.0 // 1
//DispatchQueue.main.asyncAfter(deadline: .now() + delayInSeconds) { // 2
})
return
})
alertController.addAction(okButton)
alertController.addAction(yesButton)
present(alertController, animated: true, completion: nil)
}
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
return true
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if(editingStyle == UITableViewCellEditingStyle.delete) {
self.getData.betObjects.remove(at: indexPath.row)
}
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
//let indexPath = self.tableView.indexPathForSelectedRow!
//var DestViewController : addBets = segue.destination as! addBets
//DestViewController.teamOne = self.teamOne.text!
//DestViewController.teamOne = self.teamTTwo
if segue.identifier == "gotobetview" {
if let destination = segue.destination as? addBets {
destination.teamOne = self.teamOne.text!
destination.teamTwo = self.teamTwo.text!
}
}
}
func takeAwayMoney(_ howMuch: String, index: Int, completion: @escaping (Bool)-> ()) -> Void{
if let notMuch = Int(howMuch) {
let userID = FIRAuth.auth()?.currentUser?.uid
datRef.child("User").child(userID!).observeSingleEvent(of: .value, with: { (snapshot) in
// Get user value
let value = snapshot.value as? NSDictionary
let money = value?["money"] as? String ?? ""
//convert money to int
if let conMoney = Int(money) {
var conMoreMoney = conMoney
if conMoreMoney < notMuch {
print(" You don't have enough money")
completion(false)
return
} else {
conMoreMoney -= notMuch
let values = ["money": String(conMoreMoney)]
//update the users money
self.datRef.child("User").child(userID!).updateChildValues(values)
completion(true)
}
}
// ...
}) { (error) in
print(error.localizedDescription)
}
}
}
func getUserName() -> String {
let userID = FIRAuth.auth()?.currentUser?.uid
var useruser: String!
datRef.child("User").child(userID!).observeSingleEvent(of: .value, with: { (snapshot) in
// Get user value
let value = snapshot.value as? NSDictionary
let username = value?["username"] as? String ?? ""
self.getData.userName = username
useruser = username
// ...
}) { (error) in
print(error.localizedDescription)
}
return useruser
}
func sayHello(sender: UIBarButtonItem) {
let userInput = self.teamOne.text
var userInputArray: [String] = []
userInputArray.append(self.teamOne.text!)
userInputArray.append(self.teamTwo.text!)
performSegue(withIdentifier: "gotobetview", sender: userInputArray)
//let storyboard = UIStoryboard(name: "Main", bundle: nil)
//let homeView = storyboard.instantiateViewController(withIdentifier: "addBets")
//self.present(homeView, animated: true, completion: nil)
}
func goBack(sender: UIBarButtonItem) {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let backView = storyboard.instantiateViewController(withIdentifier: "tabview")
self.present(backView, animated: true, completion: nil)
}
}
Since I cannot post anymore code I will update the project on github and post a link here.
https://github.com/devintrippprojects/EDraft
if you download the project you can always create your own account you will start out with 100 dollars or you could use the main testing account the email is [email protected] and the password is kkkkkk
I will post how the database looks and how the app looks tomorrow thanks have a good night.
