Accessing WidgetKit IntentTimelineProvider from main app target SwiftUI - swiftui

Question

I'm trying to access IntentTimelineProvider of WidgetExtension from the main app. I'm doing this so that I can get the date property from the IntentTimelineProvider and use it in a view in the main app target as you can see from the below code.
I have set the target membership of the files(file in the main app target and the file in the widget extension target) to both App and Widget.
Widget Extension
import WidgetKit
import SwiftUI
import Intents
struct Provider: IntentTimelineProvider {
func placeholder(in context: Context) -> SimpleEntry {
SimpleEntry(date: Date(), configuration: ConfigurationIntent())
}
func getSnapshot(for configuration: ConfigurationIntent, in context: Context, completion: #escaping (SimpleEntry) -> ()) {
let entry = SimpleEntry(date: Date(), configuration: configuration)
completion(entry)
}
//build time error here: "Reference to invalid associated type 'Entry' of type 'Provider'" here...
func getTimeline(for configuration: ConfigurationIntent, in context: Context, completion: #escaping (Timeline<Entry>) -> ()) {
var entries = [SimpleEntry]()
let currentDate = Date()
let midnight = Calendar.current.startOfDay(for: currentDate)
let nextMidnight = Calendar.current.date(byAdding: .day, value: 1, to: midnight)!
for offset in 0 ..< 60 * 24 {
let entryDate = Calendar.current.date(byAdding: .minute, value: offset, to: midnight)!
entries.append(SimpleEntry(date: entryDate, configuration: configuration))
}
let timeline = Timeline(entries: entries, policy: .after(nextMidnight))
completion(timeline)
}
}
struct SimpleEntry: TimelineEntry {
let date: Date
let configuration: ConfigurationIntent
}
struct TimeWidgetEntryView : View {
var entry: Provider.Entry
var body: some View {
NotingView(entry: entry)
}
}
#main
struct TimeWidget: Widget {
let kind: String = "TimeWidget"
var body: some WidgetConfiguration {
IntentConfiguration(kind: kind, intent: ConfigurationIntent.self, provider: Provider()) { entry in
TimeWidgetEntryView(entry: entry)
}
.configurationDisplayName("My Widget")
.description("This is an example widget.")
}
}
struct TimeWidget_Previews: PreviewProvider {
static var previews: some View {
TimeWidgetEntryView(entry: SimpleEntry(date: Date(), configuration: ConfigurationIntent()))
.previewContext(WidgetPreviewContext(family: .systemSmall))
}
}
Main App
import SwiftUI
struct SampleView: View {
var entry : Provider.Entry
var body: some View {
Text(entry.date, style: .time)
}
}
I'm currently getting the build time error :
"
Reference to invalid associated type 'Entry' of type 'Provider'
"
at getTimeline() function.

Answer 1

In your main app, use SimpleEntry instead of Provider.Entry. The latter is referencing the associated type of your implementation of the TimelineProvider protocol, but for whatever reason the app can’t infer the type (maybe somebody more Swift-savvy than me can explain). But you don’t need to infer it, just give it the actual type: SimpleEntry.
struct SampleView: View {
var entry : SimpleEntry
var body: some View {
Text(entry.date, style: .time)
}
}