I got this to work. The ShareSheet is the standard stuff. the Chart comes from the site mentioned above.
this was very helpful: https://www.youtube.com/watch?v=lbyRsGCvm-Q
Warning; if in a scrollview there are issues.
import SwiftUI
import Charts
struct ShareSheetView: View {
@State private var showShareSheet = false
@State var rect:CGRect = .zero
@State var uiImage:UIImage? = nil
@State var items : [Any] = []
var body: some View {
VStack(spacing: 20) {
Button(action: {
self.showShareSheet = true
items.removeAll()
self.uiImage = UIApplication.shared.windows[0].rootViewController?.view!.setImage(rect: self.rect)
items.append(self.uiImage as Any)
}) {
Text("Share Chart").padding()
}
ChartView()
.background(RectSettings(rect: $rect))
.frame(width: 300, height: 300 )
} .sheet(isPresented: $showShareSheet) {
ShareSheet(activityItems: items )
}
}
}
struct ShareSheetView_Previews: PreviewProvider {
static var previews: some View {
ShareSheetView()
}
}
struct ChartView: View {
var body: some View {
VStack {
ReturnBarChart(entries: [
BarChartDataEntry(x: 1, y: 1),
BarChartDataEntry(x: 2, y: 2),
BarChartDataEntry(x: 3, y: 3),
BarChartDataEntry(x: 4, y: 5),
BarChartDataEntry(x: 5, y: -2)
])
}
}
}
struct RectSettings: View {
@Binding var rect: CGRect
var body: some View {
GeometryReader { geo in
self.setView(proxy: geo)
}
}
func setView(proxy: GeometryProxy) -> some View {
DispatchQueue.main.async {
self.rect = proxy.frame(in: .global)
}
return Rectangle().fill(Color.clear)
}
}
extension UIView {
func setImage(rect: CGRect) -> UIImage {
let renderer = UIGraphicsImageRenderer(bounds: rect)
return renderer.image { rendererContext in
layer.render(in: rendererContext.cgContext)
}
}
}
