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960d669897
Make platform_channels_swift use more idiomatic Swift * Remove semicolons. * `if (condition)` => `if condition`. * `Class.init(...)` => `Class(...)`. * Remove `break` statements from `switch` cases. * Remove some unnecessary uses of `self`.
89 lines
3.0 KiB
Swift
89 lines
3.0 KiB
Swift
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import UIKit
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import Flutter
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@UIApplicationMain
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@objc class AppDelegate: FlutterAppDelegate, FlutterStreamHandler {
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private var eventSink: FlutterEventSink?
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override func application(
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_ application: UIApplication,
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didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
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GeneratedPluginRegistrant.register(with: self)
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let controller: FlutterViewController = window?.rootViewController as! FlutterViewController
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let batteryChannel = FlutterMethodChannel(name: "samples.flutter.io/battery",
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binaryMessenger: controller)
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batteryChannel.setMethodCallHandler({
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(call: FlutterMethodCall, result: FlutterResult) -> Void in
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if "getBatteryLevel" == call.method {
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self.receiveBatteryLevel(result: result)
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} else {
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result(FlutterMethodNotImplemented)
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}
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})
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let chargingChannel = FlutterEventChannel(name: "samples.flutter.io/charging",
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binaryMessenger: controller)
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chargingChannel.setStreamHandler(self)
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return super.application(application, didFinishLaunchingWithOptions: launchOptions)
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}
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private func receiveBatteryLevel(result: FlutterResult) {
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let device = UIDevice.current
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device.isBatteryMonitoringEnabled = true
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if device.batteryState == UIDeviceBatteryState.unknown {
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result(FlutterError(code: "UNAVAILABLE",
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message: "Battery info unavailable",
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details: nil))
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} else {
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result(Int(device.batteryLevel * 100))
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}
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}
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public func onListen(withArguments arguments: Any?,
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eventSink: @escaping FlutterEventSink) -> FlutterError? {
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self.eventSink = eventSink
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UIDevice.current.isBatteryMonitoringEnabled = true
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sendBatteryStateEvent()
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(onBatteryStateDidChange),
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name: NSNotification.Name.UIDeviceBatteryStateDidChange,
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object: nil)
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return nil
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}
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@objc private func onBatteryStateDidChange(notification: NSNotification) {
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sendBatteryStateEvent()
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}
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private func sendBatteryStateEvent() {
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if eventSink == nil {
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return
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}
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let state = UIDevice.current.batteryState
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switch state {
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case UIDeviceBatteryState.full:
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eventSink!("charging")
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case UIDeviceBatteryState.charging:
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eventSink!("charging")
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case UIDeviceBatteryState.unplugged:
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eventSink!("discharging")
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default:
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eventSink!(FlutterError(code: "UNAVAILABLE",
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message: "Charging status unavailable",
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details: nil))
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}
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}
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public func onCancel(withArguments arguments: Any?) -> FlutterError? {
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NotificationCenter.default.removeObserver(self)
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eventSink = nil
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return nil
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}
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}
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