将 App 控制扩展到系统级别

3:13 - Add the control to the Widget Bundle

@main
struct ProductivityExtensionBundle: WidgetBundle {
    
    var body: some Widget {
        ChecklistWidget()
        TaskCounterWidget()
        TimerToggle()
    }
    
}

3:29 - Complete the control

struct TimerToggle: ControlWidget {
    var body: some ControlWidgetConfiguration {
        StaticControlConfiguration(
            kind: "com.apple.Productivity.TimerToggle"
        ) {
            ControlWidgetToggle(
                "Work Timer",
                isOn: TimerManager.shared.isRunning,
                action: ToggleTimerIntent()
            ) { _ in
                Image(systemName:
                      "hourglass.bottomhalf.filled")
            }
        }
    }
}

4:41 - Specify different symbols when on and off​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

struct TimerToggle: ControlWidget {
    var body: some ControlWidgetConfiguration {
        StaticControlConfiguration(
            kind: "com.apple.Productivity.TimerToggle"
        ) {
            ControlWidgetToggle(
                "Work Timer",
                isOn: TimerManager.shared.isRunning,
                action: ToggleTimerIntent()
            ) { isOn in
                Image(systemName: isOn
                      ? "hourglass"
                      : "hourglass.bottomhalf.filled")
            }
        }
    }
}

5:21 - Specify custom value text​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ and add a custom tint color

struct TimerToggle: ControlWidget {
    var body: some ControlWidgetConfiguration {
        StaticControlConfiguration(
            kind: "com.apple.Productivity.TimerToggle"
        ) {
            ControlWidgetToggle(
                "Work Timer",
                isOn: TimerManager.shared.isRunning,
                action: ToggleTimerIntent()
            ) { isOn in
                Label(isOn ? "Running" : "Stopped",
                      systemImage: isOn
                      ? "hourglass"
                      : "hourglass.bottomhalf.filled")
            }
            .tint(.purple)
        }
    }
}

8:14 - Implement timer toggling

struct ToggleTimerIntent: SetValueIntent, LiveActivityIntent {
    static let title: LocalizedStringResource = "Productivity Timer"
    
    @Parameter(title: "Running")
    var value: Bool  // The timer’s running state
    
    func perform() throws -> some IntentResult {
        TimerManager.shared.setTimerRunning(value)
        return .result()
    }
}

8:54 - Refresh the control from within the app

func timerManager(_ manager: TimerManager,
                  timerDidChange timer: ProductivityTimer) {
    ControlCenter.shared.reloadControls(
        ofKind: "com.apple.Productivity.TimerToggle"
    )
}

10:03 - Define a Value Provider

struct TimerValueProvider: ControlValueProvider {
    
    func currentValue() async throws -> Bool {
        try await TimerManager.shared.fetchRunningState()
    }
    
    let previewValue: Bool = false
}

11:00 - Provide asynchronously fetched state with a Value Provider

struct TimerToggle: ControlWidget {
    var body: some ControlWidgetConfiguration {
        StaticControlConfiguration(
            kind: "com.apple.Productivity.TimerToggle",
            provider: TimerValueProvider()
        ) { isRunning in
            ControlWidgetToggle(
                "Work Timer",
                isOn: isRunning,
                action: ToggleTimerIntent()
            ) { isOn in
                Label(isOn ? "Running" : "Stopped",
                      systemImage: isOn
                      ? "hourglass"
                      : "hourglass.bottomhalf.filled")
            }
            .tint(.purple)
        }
    }
}

13:06 - Make the Value Provider configurable

struct ConfigurableTimerValueProvider: AppIntentControlValueProvider {
    func currentValue(configuration: SelectTimerIntent) async throws -> TimerState {
        let timer = configuration.timer
        let isRunning = try await TimerManager.shared.fetchTimerRunning(timer: timer)
        return TimerState(timer: timer, isRunning: isRunning)
    }
    
    func previewValue(configuration: SelectTimerIntent) -> TimerState {
        return TimerState(timer: configuration.timer, isRunning: false)
    }
}

13:40 - Make the timer configurable

struct TimerToggle: ControlWidget {
    var body: some ControlWidgetConfiguration {
        AppIntentControlConfiguration(
            kind: "com.apple.Productivity.TimerToggle",
            provider: ConfigurableTimerValueProvider()
        ) { timerState in
            ControlWidgetToggle(
                timerState.timer.name,
                isOn: timerState.isRunning,
                action: ToggleTimerIntent(timer: timerState.timer)
            ) { isOn in
                Label(isOn ? "Running" : "Stopped",
                      systemImage: isOn
                      ? "hourglass"
                      : "hourglass.bottomhalf.filled")
            }
            .tint(.purple)
        }
    }
}

14:26 - Prompt for user configuration automatically

struct SomeControl: ControlWidget {
    var body: some ControlWidgetConfiguration {
        AppIntentControlConfiguration(
            // ...
        )
        .promptsForUserConfiguration()
    }
}

15:42 - Custom action hint -> hint treated as verb phrase

struct TimerToggle: ControlWidget {
    var body: some ControlWidgetConfiguration {
        AppIntentControlConfiguration(
            kind: "com.apple.Productivity.TimerToggle",
            provider: ConfigurableTimerValueProvider()
        ) { timerState in
            ControlWidgetToggle(
                timerState.timer.name,
                isOn: timerState.isRunning,
                action: ToggleTimerIntent(timer: timerState.timer)
            ) { isOn in
                Label(isOn ? "Running" : "Stopped",
                      systemImage: isOn
                      ? "hourglass"
                      : "hourglass.bottomhalf.filled")
                .controlWidgetActionHint(isOn ?
                                         "Start" : "Stop")
            }
            .tint(.purple)
        }
    }
}

16:56 - Specify a display name and add a description

struct TimerToggle: ControlWidget {
    var body: some ControlWidgetConfiguration {
        AppIntentControlConfiguration(
            kind: "com.apple.Productivity.TimerToggle",
            provider: ConfigurableTimerValueProvider()
        ) { timerState in
            ControlWidgetToggle(
                timerState.timer.name,
                isOn: timerState.isRunning,
                action: ToggleTimerIntent(timer: timerState.timer)
            ) { isOn in
                Label(isOn ? "Running" : "Stopped",
                      systemImage: isOn
                      ? "hourglass"
                      : "hourglass.bottomhalf.filled")
                .controlWidgetActionHint(isOn ?
                                         "Start" : "Stop")
            }
            .tint(.purple)
        }
        .displayName("Productivity Timer")
        .description("Start and stop a productivity timer.")
    }
}