iOS: getting MissingPluginException in example application

[manojvsp12]

Describe the bug
When running the example application in ios 9.3.5 Device: iPad, getting the below error.

[VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method connect on channel ryanheise.com/audioService)
#0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:154:7)

#1 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:329:12)
#2 AudioService.connect (package:audio_service/audio_service.dart:541:20)
#3 _AudioServiceWidgetState.initState (package:audio_service/audio_service.dart:1267:18)
#4 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4644:58)

Minimal reproduction project

1. git clone https://github.com/ryanheise/audio_service.git
2. cd example

To Reproduce
OS: iOS
audio_service version: 0.8.0

1. flutter run
2. After app ui is rendered in device, click AudioPlayer button

Error messages
Automatically signing iOS for device deployment using specified development team in Xcode project: 7TQTMY8H7H
Running Xcode build...
└─Compiling, linking and signing... 29.5s
Xcode build done. 49.8s
Installing and launching... 28.9s
Syncing files to device iPad... 815ms

Flutter run key commands.
r Hot reload. 🔥🔥🔥
R Hot restart.
h Repeat this help message.
d Detach (terminate "flutter run" but leave application running).
c Clear the screen
q Quit (terminate the application on the device).
An Observatory debugger and profiler on iPad is available at: http://localhost:1024
[VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method connect on channel ryanheise.com/audioService)
#0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:154:7)

#1 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:329:12)
#2 AudioService.connect (package:audio_service/audio_service.dart:541:20)
#3 _AudioServiceWidgetState.initState (package:audio_service/audio_service.dart:1267:18)
#4 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4644:58)
#5 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#6 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#7 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#8 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#9 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#10 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#11 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#12 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#13 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#14 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#15 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#16 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#17 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#18 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#19 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#20 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#21 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#22 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#23 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#24 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#25 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#26 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#27 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#28 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#29 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#30 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5951:32)
#31 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#32 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#33 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#34 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#35 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#36 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#37 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#38 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#39 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#40 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#41 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#42 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#43 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#44 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#45 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#46 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#47 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#48 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#49 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#50 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#51 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#52 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#53 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#54 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#55 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#56 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#57 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#58 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#59 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#60 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#61 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#62 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#63 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#64 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#65 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#66 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#67 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#68 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#69 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#70 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#71 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#72 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#73 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#74 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#75 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#76 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#77 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#78 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#79 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#80 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#81 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#82 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#83 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#84 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#85 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#86 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#87 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#88 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#89 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#90 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#91 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#92 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#93 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#94 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#95 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#96 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#97 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#98 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#99 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#100 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#101 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#102 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#103 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#104 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#105 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#106 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#107 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#108 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#109 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#110 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#111 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#112 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#113 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#114 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#115 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#116 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#117 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#118 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#119 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#120 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#121 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#122 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#123 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#124 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#125 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#126 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#127 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#128 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#129 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#130 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#131 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#132 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#133 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#134 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#135 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#136 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#137 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#138 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#139 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#140 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#141 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#142 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#143 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#144 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#145 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#146 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#147 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#148 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#149 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#150 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5951:32)
#151 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#152 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#153 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#154 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#155 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#156 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#157 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#158 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#159 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#160 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#161 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#162 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#163 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#164 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#165 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#166 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#167 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#168 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#169 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#170 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#171 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#172 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#173 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#174 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#175 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#176 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#177 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#178 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#179 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#180 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#181 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#182 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#183 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#184 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#185 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#186 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#187 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#188 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#189 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#190 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#191 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#192 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#193 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#194 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#195 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#196 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#197 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#198 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#199 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#200 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#201 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#202 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#203 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#204 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#205 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#206 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#207 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#208 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#209 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#210 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#211 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#212 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#213 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#214 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#215 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#216 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#217 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#218 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#219 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#220 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#221 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#222 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#223 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#224 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#225 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#226 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#227 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#228 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#229 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#230 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#231 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#232 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#233 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#234 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#235 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4679:11)
#236 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#237 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#238 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4670:11)
#239 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#240 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#241 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#242 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#243 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#244 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#245 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#246 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#247 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#248 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#249 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#250 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#251 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#252 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#253 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#254 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5834:14)
#255 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#256 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
#257 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4531:16)
#258 Element.rebuild (package:flutter/src/widgets/framework.dart:4222:5)
#259 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4485:5)
#260 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4480:5)
#261 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3450:14)
#262 Element.updateChild (package:flutter/src/widgets/framework.dart:3218:18)
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Application finished.

Expected behavior
AudioPlayer should open with audio playing.

Screenshots
If applicable, add screenshots to help explain your problem.

Runtime Environment (please complete the following information if relevant):

• Device: iPad
• OS: iOS 9.3.5

Flutter SDK version
[✓] Flutter (Channel master, v1.18.0-10.0.pre, on Mac OS X 10.15.3 19D76, locale en-GB)
• Flutter version 1.18.0-10.0.pre at /Users/manojsp/Documents/flutter
• Framework revision 0c4a659d18 (5 weeks ago), 2020-04-25 07:24:01 +0200
• Engine revision 2b94311a77
• Dart version 2.9.0 (build 2.9.0-3.0.dev 94178e920e)

[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
• Android SDK at /Users/manojsp/Library/Android/sdk
• Platform android-29, build-tools 29.0.3
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)
✗ Android license status unknown.
Try re-installing or updating your Android SDK Manager.
See https://developer.android.com/studio/#downloads or visit visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed instructions.

[✓] Xcode - develop for iOS and macOS (Xcode 11.0)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 11.0, Build version 11A420a
• CocoaPods version 1.9.1

[✗] Chrome - develop for the web (Cannot find Chrome executable at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome)
! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.

[!] Android Studio (version 3.6)
• Android Studio at /Applications/Android Studio.app/Contents
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)

[✓] VS Code (version 1.45.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.10.2

[✓] Connected device (1 available)
• Web Server • web-server • web-javascript • Flutter Tools

! Doctor found issues in 3 categories.

Additional context
Add any other context about the problem here.

[speaking-in-code]

I'm seeing the same. The example app works fine for me in a simulator, but fails on a real device.

Device information: iPhone 5, OS: version 10.3.3

[ryanheise]

Since I don't have a real device, so I might need your help in investigating this. If you rebuild on flutter stable, does it still happen? Can you try cleaning a few things renegerating the Podfile, removing the lock, and maybe running flutter pub upgrade?

[manojvsp12]

tried running using stable channel, deleted podFile and podlock. still same response.

[ryanheise]

Thanks, @manojvsp12 .

One thing I don't understand about the stacktrace you provided is that it happens during initState so that sounds like it would have appeared immediately upon starting the app rather than when clicking the AudioPlayer button. Can you confirm or clarify this detail?

[ryanheise]

It may also be helpful to add some logging to see WHEN (or IF?) the iOS plugin is being registered.

In ios/Classes/AudioServicePlugin.m can you try adding this NSLog call to the first line of registerWithRegistrar?

+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {                                                
        NSLog(@"registerWithRegistrar %s", channel == nil ? "channel == nil" : "channel != nil");
        etc....

It should print out "channel == nil" when the app starts (and this is supposed to happen BEFORE connect is called, and then "channel != nil" should happen as soon as you click the AudioPlayer button.

[manojvsp12]

Getting the expected print out after adding the line but not when app starts, print is done when AudioPlayer button is clicked. Also error is printed after AudioPlayer button is clicked, not when app starts.

An Observatory debugger and profiler on iPad is available at: http://localhost:1024
registerWithRegistrar channel != nil
[VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method connect on channel ryanheise.com/audioService)
#0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:154:7)

#1 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:329:12)
#2 AudioService.connect (package:audio_service/audio_service.dart:541:20)
#3 _AudioServiceWidgetState.initState (package:audio_service/audio_service.dart:1267:18)

[speaking-in-code]

Did some debugging, comparing what happens in the simulator vs what happens on the real device.

Both get to the point of starting the background task isolate.
On the simulator, it starts immediately.
On the real device, it does not start.

Instead, 6 seconds later, _AudioServiceWidgetState.initState is invoked. This calls AudioService.connect, which tries the _channel.InvokeMethod call. That throws the missing plugin exception.

I will continue to debug.

[ryanheise]

Thanks, @speaking-in-code ! I've merged your pull request on the flutter_isolate project and updated the dependencies of audio_service to point to it.

@manojvsp12 can you confirm that this works for you?