100 days of swiftUI

Day 69: MapKit+ face id

Day 70:
MapMarker vs MapAnnotation
Different thought on pass in objects between views - if use binding and if use function calls

Day 71:
Async for url request task, keywords
Comparable protocol

Day 72: Mvvm use observed model for data type
Authentication call back run on main thread

Day 73: wrap up + challenge
SwiftUI does not let us bind a text field to an optional string but we can use computer property to link it
Italic text first used in Venice in 1500
Map annotation is the most customizable choice
Face ID  call back on a bg task, not main actor
Class conform to the ObservableObject should have the attribute, @Main actor but not required to all class
Map annotation must conforms to identifiable so SwiftUI can be notified when annotations updated

-make State object instance in a initializer

Day 74: accessibility
Label + action: when an image also has a tap action
Group multiple text view together with combine children
Ways to have voice over hip ore view: decoration label or ignore the whole view with accessibility modifier

Day 75:
Add accessibility to past projects
New ios15 ui. Remake

Day 76: accessibility wrap up
Accessibility ignore combine child can ignore the child view but still reads parent view

Day 77: project 13-15 wrap up
Operator overloading - can make code confusing
All integer protocol in Swift is BinaryInteger
Custom property wrapper - add @propertyWrapper annotation at property to declare custom property wrapper

补充内容 (2022-02-19 14:06 +08:00):
UIImageWriteToSavedPhotosAlbum -> save UIImage to data by calling jpegData

Day 78: location fetcher class to get user permission for current gps location
-> display pin at the current location