[英]How to use flutter_blue with iOS?
我正在嘗試將 flutter 和 flutter_blue 與 iOS 一起使用。
我收到每個頻道的故障轉儲。 我是 flutter 的新手,所以也許這是一個簡單的問題。 我知道人們使用這個庫,所以它必須在我的使用中。 奇怪的是,盡管選擇了頻道,但每次都會產生相同的故障轉儲。
OSX: Version 0.15.5 (19F101)
Xcode : Version 11.5 (11E608c)
使用主頁上的示例和實際的 GitHub src 作為指南。 這些網址:
我已經嘗試過每個 flutter 通道。 每個通道產生相同的故障轉儲。
$ flutter channel stable
$ flutter upgrade
Flutter 1.17.4 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 1ad9baa8b9 (9 days ago) • 2020-06-17 14:41:16 -0700
Engine • revision ee76268252
Tools • Dart 2.8.4
$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.17.4, on Mac OS X 10.15.5 19F101, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 11.5)
[✓] Android Studio (version 4.0)
[!] VS Code (version 1.24.1)
✗ Flutter extension not installed; install from
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[✓] Connected device (1 available)
! Doctor found issues in 1 category.
為簡單起見,模仿這個例子。
$ flutter create flutter_blue_example
$ cd flutter_blue_example
$ open ios/Runner.xcworkspace/
Select 目標:運行器然后常規選項卡以修改運行時 API
General->Deployment Info->Target == iOS 13.5
Select 目標:Runner 然后 Signing & Capabilities 選項卡以修改簽名包標識符和團隊名稱。
我注意到一些錯誤消息與 iOS 8.0 與 iOS 10.0 API 功能有關。 結果我選擇了最新的API iOS 13。
正確的包標識符和簽名團隊名稱
通過 Xcode 在手機上運行示例。
停止應用關閉 Xcode。 使用 cli 運行。
關閉並用cli測試
$ flutter run
演示應用程序運行時,按 q 退出
dependencies:
flutter_blue: ^0.7.2
flutter:
sdk: flutter
$ cd lib
$ rm main.dart
$ curl https://raw.githubusercontent.com/pauldemarco/flutter_blue/master/example/lib/main.dart --output main.dart
$ curl https://raw.githubusercontent.com/pauldemarco/flutter_blue/master/example/lib/widgets.dart --output widgets.dart
每次我更改頻道時,我都會執行相同的過程。
$ cd ..
# The rm iOS/Podfile command is only needed when
# switching to channel dev
# rm iOS/Podfile
$ flutter pub get
$ flutter clean
$ flutter run
Launching lib/main.dart on JFD_X in debug mode...
Automatically signing iOS for device deployment using specified development team in Xcode
project: Z84M4MZYKF
Running pod install... 1.6s
Running Xcode build...
└─Compiling, linking and signing... 14.3s
Xcode build done. 29.7s
Installing and launching... ⣻
在 iPhone 上,它會閃爍顯示應用程序啟動的屏幕,但很快就會返回主屏幕。 提示永遠不會返回,並且必須使用ctrl-c
退出命令,因為q
沒有響應。
使用詳細選項運行可提供此信息。
<stuff snipped>
[ +155 ms] success
[ ] (lldb) safequit
[ +109 ms] Process 20400 detached
[ +30 ms] Application launched on the device. Waiting for observatory port.
[ +9 ms] Attempting to forward device port 49232 to host port 1024
[ ] executing: /Users/davis/progs/flutter/flutter/bin/cache/artifacts/usbmuxd/iproxy 1024 49232
850f92882e33715d639b466a0ba9a01aeb601823
[+1011 ms] Forwarded port ForwardedPort HOST:1024 to DEVICE:49232
[ +17 ms] HttpException: Connection closed before full header was received, uri = http://localhost:1024/ws
[+2008 ms] HttpException: , uri = http://localhost:1024/ws
[+2007 ms] HttpException: , uri = http://localhost:1024/ws
[+2008 ms] HttpException: , uri = http://localhost:1024/ws
[+2011 ms] HttpException: , uri = http://localhost:1024/ws
[+2006 ms] Failed to connect directly, falling back to mDNS
[ +5 ms] Checking for advertised Dart observatories...
[+5020 ms] No pointer records found.
[ +2 ms] mDNS query failed. Checking for an interface with a ipv4 link local address.
[ +2 ms] Found interface "en0":
[ ] Bound address: "192.168.86.53"
[ ] Found interface "en5":
[ ] Bound address: "169.254.128.136" link local
[ ] An interface with an ipv4 link local address was found.
[ ] Failed to connect with mDNS, falling back to log scanning
再次打開 xcode 並嘗試從 Xcode 運行。
$ open ios/Runner.xcworkspace/
運行應用程序,它會提供以下故障轉儲
libsystem_kernel.dylib`__abort_with_payload:
0x1b44c97ec <+0>: mov x16, #0x209
0x1b44c97f0 <+4>: svc #0x80
-> 0x1b44c97f4 <+8>: b.lo 0x1b44c9810 ; <+36> Thread 3: signal SIGABRT
0x1b44c97f8 <+12>: stp x29, x30, [sp, #-0x10]!
0x1b44c97fc <+16>: mov x29, sp
0x1b44c9800 <+20>: bl 0x1b44a9ad0 ; cerror_nocancel
0x1b44c9804 <+24>: mov sp, x29
0x1b44c9808 <+28>: ldp x29, x30, [sp], #0x10
0x1b44c980c <+32>: ret
0x1b44c9810 <+36>: ret
版本檢查
huo-yang~/progs/flutter/flutter-testy/flutter_blue_example$ flutter --version
Flutter 1.17.4 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 1ad9baa8b9 (12 days ago) • 2020-06-17 14:41:16 -0700
Engine • revision ee76268252
Tools • Dart 2.8.4
給出與上面相同的堆棧跟蹤。
版本檢查
huo-yang~/progs/flutter/flutter-testy/flutter_blue_example$ flutter --version
Flutter 1.19.0-4.2.pre • channel beta • https://github.com/flutter/flutter.git
Framework • revision 9b9b543d92 (7 days ago) • 2020-06-22 12:19:28 -0700
Engine • revision 9a28c3bcf4
Tools • Dart 2.9.0 (build 2.9.0-14.1.beta)
給出與上面相同的堆棧跟蹤。
版本檢查
$ flutter run --version
Flutter 1.20.0-2.0.pre • channel dev • https://github.com/flutter/flutter.git
Framework • revision 15a28159bc (6 days ago) • 2020-06-23 04:52:58 -0700
Engine • revision 91a63d6a44
Tools • Dart 2.9.0 (build 2.9.0-19.0.dev 7e72c9ae7e)
我嘗試了 flutter_blue 至少兩個月,但我無法以任何可靠的方式開始工作。 我不想 go 進入詳細信息,但您可以在 flutter_blue github 存儲庫中搜索我的 ID 並獲得一張不錯的圖片。
我終於切換到了flutter_ble_lib https://pub.dev/packages/flutter_ble_lib並在幾天內完成了我所有的工作。 我的代碼非常抽象,切換庫也沒問題。 一切都在 Android 和 IOS 上工作。 試試看。
我嘗試了適用於他但不適用於我的代碼的朋友版本。
看這里
由於該代碼在同一個地方失敗,我再次檢查了堆棧跟蹤,我注意到堆棧跟蹤中有一個較早的失敗。
TCC`__CRASHING_DUE_TO_PRIVACY_VIOLATION__:
結果,我添加了以下內容
<key>NSBluetoothAlwaysUsageDescription</key>
<string>This app uses bluetooth</string>
到ios/Runner/Info.plist file
。
之后它就起作用了。
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