ksenia312
36 lines
1.1 KiB
Swift
36 lines
1.1 KiB
Swift
import Flutter
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class ConnectedDeviceStreamHandler: NSObject, FlutterStreamHandler {
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private var eventSink: FlutterEventSink?
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private var timer : Timer?
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func onListen(withArguments arguments: Any?, eventSink: @escaping FlutterEventSink) -> FlutterError? {
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let deviceId = arguments as! String
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self.eventSink = eventSink
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startSendingUpdates(deviceId: deviceId)
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return nil
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}
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func onCancel(withArguments arguments: Any?) -> FlutterError? {
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stopSendingUpdates()
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eventSink = nil
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return nil
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}
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func startSendingUpdates(deviceId:String) {
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self.timer = Timer.scheduledTimer(withTimeInterval: 2.0, repeats: true) { [weak self] _ in
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guard let self = self else { return }
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var result: String?
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if let device = NearbyDevicesStore.instance.find(for: deviceId) {
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result = device.toJsonString()
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}
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self.eventSink?(result)
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}
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}
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func stopSendingUpdates() {
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self.timer?.invalidate()
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self.timer = nil
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}
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}
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