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iOS Build a Vending Machine App in Swift 2.0 Using the Vending Machine Updating the Price

Carson Carbery
Carson Carbery
9,876 Points
Posted by Carson Carbery
Carson Carbery
9,876 Points

Build a Vending Machine - Updating the price - Where is the amountDeposited being changed?

Hi I am following this lesson in my own xcode and it all works. However when we update the price the amountDeposited is somewhere having the item.price subtracted from it. I can't find where this happens, though I have made many searches and read all the code. Can some one explain how this happened to me please. Thanks

2 Answers

Carson Carbery
Carson Carbery
9,876 Points
Carson Carbery
Carson Carbery
9,876 Points

I fixed this by adding a totalPrice variable, which i updated in the didSelectItemAtIndexPath and then subtracted from amountDeposited in the Purchase function. There's more to be done in the next lesson to clean this up for multiple lessons I guess, and I'm assuming that there is a code mismatch between the version being shown in the demo and the code that was being entered in the lesson. Either that or I missed something. Anyway onwards :-)

Zack Kitzmiller
Zack Kitzmiller
2,182 Points
Zack Kitzmiller
Zack Kitzmiller
2,182 Points

This happens in VendingMachine.swift on (my) lines 129-131

        let totalPrice = item.price * quantity
        if amountDeposited >= totalPrice {
            amountDeposited -= totalPrice
        } else {