创建 iOS 小组件（Widget） - ToB企服应用市场:ToB评测及商务社交产业平台

import WidgetKit
import SwiftUI
struct Provider: TimelineProvider {
func placeholder(in context: Context) -> SimpleEntry {
SimpleEntry(date: Date())
}
func getSnapshot(in context: Context, completion: @escaping (SimpleEntry) -> ()) {
let entry = SimpleEntry(date: Date())
completion(entry)
}
func getTimeline(in context: Context, completion: @escaping (Timeline<Entry>) -> ()) {
var entries: [SimpleEntry] = []
// 生成一个未来时间点的时间线条目
let currentDate = Date()
for hourOffset in 0 ..< 5 {
let entryDate = Calendar.current.date(byAdding: .hour, value: hourOffset, to: currentDate)!
let entry = SimpleEntry(date: entryDate)
entries.append(entry)
}
// 使用条目创建时间线
let timeline = Timeline(entries: entries, policy: .atEnd)
completion(timeline)
}
}
struct SimpleEntry: TimelineEntry {
let date: Date
}
struct MyWidgetEntryView : View {
var entry: Provider.Entry
var body: some View {
Text(entry.date, style: .time)
}
}
@main
struct MyWidget: Widget {
let kind: String = "MyWidget"
var body: some WidgetConfiguration {
StaticConfiguration(kind: kind, provider: Provider()) { entry in
MyWidgetEntryView(entry: entry)
}
.configurationDisplayName("My Widget")
.description("This is an example widget.")
.supportedFamilies([.systemSmall, .systemMedium, .systemLarge])
}
}
struct MyWidget_Previews: PreviewProvider {
static var previews: some View {
MyWidgetEntryView(entry: SimpleEntry(date: Date()))
.previewContext(WidgetPreviewContext(family: .systemSmall))
}
}

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