//
// ContentView.swift
// SwiftBackgroundTaskTimer
//
// Created by paige on 2021/12/13.
//
import SwiftUI
import UserNotifications
struct ContentView: View {
var body: some View {
Home()
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
struct Home: View {
@State var start = false
@State var to: CGFloat = 0
@State var count = 0
@State var time = Timer.publish(every: 1, on: .main, in: .common).autoconnect()
var body: some View {
ZStack {
Color.black.opacity(0.06).edgesIgnoringSafeArea(.all)
VStack {
ZStack {
Circle()
.trim(from: 0, to: 1)
.stroke(.black.opacity(0.09),
style: StrokeStyle(lineWidth: 35, lineCap: .round))
.frame(width: 280, height: 280)
Circle()
.trim(from: 0, to: self.to)
.stroke(.red,
style: StrokeStyle(lineWidth: 35, lineCap: .round))
.frame(width: 280, height: 280)
.rotationEffect(.init(degrees: -90))
VStack {
Text("\(self.count)")
.font(.system(size: 65))
.fontWeight(.bold)
Text("Of 15")
.font(.title)
} //: VSTACK - TIMER TEXT
} //: ZSTACK - TIMER WRAPPER
HStack(spacing: 20) {
Button {
if self.count == 15 {
self.count = 0
withAnimation(.default) {
self.to = 0
}
}
self.start.toggle()
} label: {
HStack(spacing: 15) {
Image(systemName: self.start ? "pause.fill" : "play.fill")
.foregroundColor(.white)
Text(self.start ? "Pause" : "Play")
.foregroundColor(.white)
}
}
.padding(.vertical)
.frame(width: (UIScreen.main.bounds.width / 2) - 55)
.background(.red)
.clipShape(Capsule())
.shadow(radius: 6)
Button {
self.count = 0
withAnimation {
self.to = 0
}
} label: {
HStack(spacing: 15) {
Image(systemName: "arrow.clockwise")
.foregroundColor(.red)
Text("Restart")
.foregroundColor(.red)
}
}
.padding(.vertical)
.frame(width: (UIScreen.main.bounds.width / 2) - 55)
.background(
Capsule()
.stroke(.red, lineWidth: 2)
)
.shadow(radius: 6)
} //: HSTACK - BUTTON WRAPPER
.padding(.top, 55)
} //: VSTACK - TIMER
} //: VSTACK - ENTIRE PAGE
.onAppear(perform: {
UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .sound, .alert]) { _, _ in
}
})
.onReceive(self.time) { _ in
if self.start {
if self.count != 15 {
self.count += 1
withAnimation(.default) {
self.to = CGFloat(self.count) / 15
}
} else {
withAnimation(.default) {
self.to = 0
}
self.start.toggle()
//MARK: - notify
self.notify()
}
}
}
}
private func notify() {
let content = UNMutableNotificationContent()
content.title = "Message"
content.body = "Timer is completed successfully in background !!!"
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 1, repeats: false)
let req = UNNotificationRequest(identifier: "MSF", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(req, withCompletionHandler: nil)
}
}