| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #import "BatteryPlugin.h" |
| |
| @interface FLTBatteryPlugin () <FlutterStreamHandler> |
| @end |
| |
| @implementation FLTBatteryPlugin { |
| FlutterEventSink _eventSink; |
| } |
| |
| + (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar { |
| FLTBatteryPlugin* instance = [[FLTBatteryPlugin alloc] init]; |
| |
| FlutterMethodChannel* channel = |
| [FlutterMethodChannel methodChannelWithName:@"plugins.flutter.io/battery" |
| binaryMessenger:[registrar messenger]]; |
| |
| [registrar addMethodCallDelegate:instance channel:channel]; |
| FlutterEventChannel* chargingChannel = |
| [FlutterEventChannel eventChannelWithName:@"plugins.flutter.io/charging" |
| binaryMessenger:[registrar messenger]]; |
| [chargingChannel setStreamHandler:instance]; |
| } |
| |
| - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result { |
| if ([@"getBatteryLevel" isEqualToString:call.method]) { |
| int batteryLevel = [self getBatteryLevel]; |
| if (batteryLevel == -1) { |
| result([FlutterError errorWithCode:@"UNAVAILABLE" |
| message:@"Battery info unavailable" |
| details:nil]); |
| } else { |
| result(@(batteryLevel)); |
| } |
| } else { |
| result(FlutterMethodNotImplemented); |
| } |
| } |
| |
| - (void)onBatteryStateDidChange:(NSNotification*)notification { |
| [self sendBatteryStateEvent]; |
| } |
| |
| - (void)sendBatteryStateEvent { |
| if (!_eventSink) return; |
| UIDeviceBatteryState state = [[UIDevice currentDevice] batteryState]; |
| switch (state) { |
| case UIDeviceBatteryStateFull: |
| _eventSink(@"full"); |
| case UIDeviceBatteryStateCharging: |
| _eventSink(@"charging"); |
| break; |
| case UIDeviceBatteryStateUnplugged: |
| _eventSink(@"discharging"); |
| break; |
| default: |
| _eventSink([FlutterError errorWithCode:@"UNAVAILABLE" |
| message:@"Charging status unavailable" |
| details:nil]); |
| break; |
| } |
| } |
| |
| - (int)getBatteryLevel { |
| UIDevice* device = UIDevice.currentDevice; |
| device.batteryMonitoringEnabled = YES; |
| if (device.batteryState == UIDeviceBatteryStateUnknown) { |
| return -1; |
| } else { |
| return ((int)(device.batteryLevel * 100)); |
| } |
| } |
| |
| #pragma mark FlutterStreamHandler impl |
| |
| - (FlutterError*)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)eventSink { |
| _eventSink = eventSink; |
| [[UIDevice currentDevice] setBatteryMonitoringEnabled:YES]; |
| [self sendBatteryStateEvent]; |
| [[NSNotificationCenter defaultCenter] addObserver:self |
| selector:@selector(onBatteryStateDidChange:) |
| name:UIDeviceBatteryStateDidChangeNotification |
| object:nil]; |
| return nil; |
| } |
| |
| - (FlutterError*)onCancelWithArguments:(id)arguments { |
| [[NSNotificationCenter defaultCenter] removeObserver:self]; |
| _eventSink = nil; |
| return nil; |
| } |
| |
| @end |
