100DaysOfSwiftUI | 100 Days Of SwiftUI Challenge | Frontend Framework library
kandi X-RAY | 100DaysOfSwiftUI Summary
kandi X-RAY | 100DaysOfSwiftUI Summary
100 Days Of SwiftUI Challenge by Paul Hudson ->
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QUESTION
I’m a newbie self teaching myself iOS development (100DaysOfSwiftUI by Paul Hudson, Project 1), and currently I came across a problem that I haven’t been able to solve yet. Originally, the numberOfPeople section had a picker with below code, which I’m trying to change to a text field. Started by changing its @State property (@State private var numberOfPeople = 2) from 2 to empty string, and tried creating another computed property for people count. when the number of people text field is left empty, 0 doesn’t appear as default on the simulator on the amount per person section when I run the project, instead NaN appears as in the screenshot below. (Which makes me wonder if numberOfPeople converted successfully to an Integer through nil coalescing as below). Only time the project functions as it should is when I enter a value in the number of people text field. I’m not 100% sure where I went wrong with this, but any help will be greatly appreciated!!
...ANSWER
Answered 2021-May-06 at 15:34What you're seeing is a result of trying to divide by zero. You can avoid that calculation by returning 0
from your totalPerPerson
function if peopleCount
is 0
before doing the division using something like this:
QUESTION
I'm currently working through the #100daysofswiftUI and have a quick question regarding the use of alerts within if statements. This particular task is at the end of the second project.
Here is the code:
...ANSWER
Answered 2020-Sep-27 at 12:09You need to return an Alert
in the .alert
modifier, not an if statement.
For this you can create a computed property which returns an Alert:
QUESTION
Trying to update the mapview of the Project 14 of 100daysOfSwiftUI to show my current location, the problem i can´t zoom in move around
i have this code i add @Binding var currentLocation : CLLocationCoordinate2D
and view.setCenter(currentLocation, animated: true)
to my MapView so i have a button that send thats value and the view actually move so slow to the location but then i can move away anymore
ANSWER
Answered 2020-Apr-30 at 17:47No where here do you ever call locationManager.requestWhenInUseAuthorization()
. When I did that (of course, making sure the Info.plist
had an entry for NSLocationWhenInUseUsageDescription
), it updated the location correctly.
E.g.
QUESTION
im doing a litte app using what i'm learning from the 100daysofswiftui i have a navigation view where you can add and delet user an a navigation link to see more details.
in the detail view you can add address to the user and delete it but the delete its not working
...ANSWER
Answered 2020-Apr-23 at 20:24Thanks to the help of @Volker88 and @PaFi
I just add @ObservedObject var user : User
to my object so that way swift knows something has change
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