segmentedcontrol

来源： https://stackoverflow.com/questions/53970129/how-to-set-cupertinosegmentedcontrol-height

来源： https://stackoverflow.com/questions/53970129/how-to-set-cupertinosegmentedcontrol-height

问题 Below is my code to create a standard segmented control. struct ContentView: View { @State private var favoriteColor = 0 var colors = ["Red", "Green", "Blue"] var body: some View { VStack { Picker(selection: $favoriteColor, label: Text("What is your favorite color?")) { ForEach(0..<colors.count) { index in Text(self.colors[index]).tag(index) } }.pickerStyle(SegmentedPickerStyle()) Text("Value: \(colors[favoriteColor])") } } } My question is how could I modify it to have a customized segmented

问题 I have a list View and now I am trying to set up tab view for this list view. Now sometime there are 3 options, sometimes 2 and sometimes 1. As you can see here And when a tab is clicked I will reload my list view with new data depending on which item in the tab bar was clicked. But this is similar data, so it will be in the same list view and I want to use the same xml layout. But currently I am unable to do this, I can't see to get it working it. Here is what I have so myTabHost =(TabHost)

问题 I get gradient image with this method func gradient(size:CGSize,color:[UIColor]) -> UIImage?{ //turn color into cgcolor let colors = color.map{$0.cgColor} //begin graphics context UIGraphicsBeginImageContextWithOptions(size, true, 0.0) guard let context = UIGraphicsGetCurrentContext() else { return nil } // From now on, the context gets ended if any return happens defer {UIGraphicsEndImageContext()} //create core graphics context let locations:[CGFloat] = [0.0,1.0] guard let gredient =

问题 I am trying to implement a segmented control into a view controller but every time I try to tap the controller on the simulator, the app crashes. But I really don't know what is from with my code. For added context: Trying to change four labels with four segments. // // AboutViewController.swift // Yiives // // Created by Patrick van der Nat on 7/22/17. // Copyright © 2017 Origen. All rights reserved. // import UIKit class AboutViewController: UIViewController { @IBOutlet weak var