SwiftUI ColorPicker - swiftui

Using the new ColorPicker from SwiftUI I was wondering if it's possible to preset the "favorite colors" as shown below. If I'm using the ColorPicker within another app, I also have my favorite colors created from the first app.

Related

Declare bottom zone in a SwiftUI navigation sidebar below a list

In the below screenshots (taken from the Apple Developer app), we can see that the Account button sticks to the bottom of the sidebar.
When the window is tall enough (left), the list doesn’t scroll, Account button’s background color has no difference. When the window is not tall enough (right), causing the list to scroll, Account button changes its background color to reveal the relationship.
The list's scroll position can not be probed. How can I declare the Account button in SwiftUI?
That app is a UIKit catalyst app and the sidebar uses scrollViewDidScroll which uses the contentSize to set a bottomButtonState which is passed into a child UIHostingController (so the account button can be SwiftUI) which I would assume switches between a clear or solid background.
We cant get the scroll info in SwiftUI however a possible workaround would be to add dummy 1 pixel high cell to the bottom of the list and using its onAppear to set a binding that is used in a bottom view to enable/disable a background colour and should achieve the same effect.

dynamically update color scheme of many available + refresh views in swiftui

How can I refresh a SwiftUI View dynamically while showing the user a list of color schemes to choose from? eg the user sees a list with 5 different themes each with its own button+UILabel, then presses one of them and the View refreshes with the UI elements refreshing to using that color scheme selected.
How can I force the View to redraw using the new color scheme?
Is there a way to define such Color scheme via an extension to swiftUI Color, so that I can continue to use eg a .foregroundColor(Color.primary) and yet the color actually used, to be in the dynamically chosen current theme, ie. use the Color.primary for the currently selected theme?
Thank you

Navigation View in Tab View Child Views SwiftUi

I have started learning swiftUI so I have question about Navigation View. My app starts with splash screen which is embedded in Navigation View and after that I have navigation link to the second screen which is Tab View. Do I need navigation views in child views of Tab View if I have some button etc and I also need to go to other screens from them or I use primary navigation view which tab view is embedded in?
When using both TabView and NavigationView, TabView should always be the parent view and should contain NavigationView inside it.
Hope this clarifies what you’re looking for?

How to make a side popup view in swiftui

What is the name of the SwiftUI View shown in the image (the side popup view on the top right of the screen)? If it's custom made, then what default SwiftUI view do I use to achieve this look in my own app?

when I Using Three20 to Launch another UITabBarController in a TTLauncherView ,Original UITabBarController Tabbar Can't disappear

when I launch another UITabBarController in a LaunchView, the TTLauncherView is in the page in the original UITabBarController, the Dest Controller is another UITabBarController, but the Original UITabBarController's TabBar can't disappear.
So, in the UI, I have two TabBars, the Original TabBar in the Bottom, the second Dest Controller View display in the screen except the bottom tabbar.
This is not what I want. How to solve this problem to hide the Original TabBar and let the second Dest Controller to display Full Screen?
In the first Controller, I launch second controller by LauncherView button.
You need to hide the tab bar view when pushing the new controller using
controller.hidesBottomBarWhenPushed = YES;
Take a look on this tutorial from three20 wiki, it explains on how to hide the tab bar when pushing another controller.
http://three20.info/article/2010-11-10-Hiding-The-iphone-Tab-Bar-With-TTNavigator