Created
June 20, 2020 19:59
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Two examples of iterating over a list of elements, with ForEach. See bellow how to add a PickerView
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import SwiftUI | |
struct ContentView: View { | |
let tips = ["Dream of mice", "Make some Origami", "Get the dog juggling", "Eating candies", "Sniffing weird stuff"] | |
var body: some View { | |
// Simple iteration where there list contains only a bunch of Strings | |
ForEach(tips, id: \.self) { tip in | |
VStack { | |
Image("Meditate") | |
.resizable() | |
.scaledToFit() | |
Text("Cat relaxation tip: \(tip)") | |
} | |
} | |
// More complex iteration over a list of instances | |
VStack { | |
ForEach(RelaxationTip.demoTips) { tipModel in | |
VStack { | |
Image(tipModel.imageName) | |
.resizable() | |
.scaledToFit() | |
Text(tipModel.tip) | |
} | |
} | |
} | |
} | |
} | |
// Here is the list of instances. Remember: It is mandatory that the Model conforms to Identifiable protocol, so each instance can be identified by an unique identifier | |
import SwiftUI | |
struct RelaxationTip: Identifiable { | |
var id = UUID() | |
var imageName: String | |
var tip: String | |
} | |
extension RelaxationTip { | |
static let demoTips: [RelaxationTip] = [ | |
RelaxationTip(imageName: "Meditate", tip: "Meditate with your human pet"), | |
RelaxationTip(imageName: "Juggle", tip: "Juggle for a while"), | |
RelaxationTip(imageName: "DreamOfMice", tip: "Dream of mice"), | |
RelaxationTip(imageName: "Origami", tip: "Make some Origami"), | |
RelaxationTip(imageName: "MakeDogJuggle", tip: "Get the dog juggling"), | |
] | |
} | |
// Adding a Picker | |
struct PickerViewExample: View { | |
// reference to array of instances | |
let tips = RelaxationTip.demoTips | |
// holds the selected value index | |
@State private var selectedPickerIndex = 0 | |
var body: some View { | |
VStack { | |
Picker(selection: $selectedPickerIndex, label: Text("Pick your mood")) { | |
ForEach(0 ..< tips.count) { index in | |
HStack { | |
Image(self.tips[index].imageName) | |
.resizable() | |
.scaledToFit() | |
Text(self.tips[index].tip) | |
} | |
} | |
} | |
Text("You've selected \(self.tips[self.selectedPickerIndex].tip)") | |
} | |
} | |
} | |
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