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Retroshare mobile: Setup Flutter | Android Studio build environment

Windows

Directories

(These may be adapted to your needs.)

  • Clean environment yet without any dart, flutter or android studio
  • FlutterDir: C:\Users\LOCALWINUSERNAME\Documents\flutter_windows_x.xx.x-stable\flutter
  • AndroidStudioDir: C:\Program Files\Android\AndroidStudio
  • RSMobileDir: C:\Users\LOCALWINUSERNAME\Documents\GitHub\retroshare-mobile
  • RSPlatformTools: C:\Users\LOCALWINUSERNAME\AppData\Local\Android\Sdk\platform-tools

Steps

Flutter installation

  1. Download and install Git for windows
    • https://gitforwindows.org/
    • Git path : C:\Program Files\Git\cmd\git.exe
    • Add in Environment Variables of your account, Git to PATH: C:\Program Files\Git\cmd
  2. Download and install Github Desktop for windows.
    https://central.github.com/deployments/desktop/desktop/latest/win32
  3. Download Flutter stable:
    https://flutter.dev/docs/get-started/install/windows#get-the-flutter-sdk
  4. Open the zip-package and copy the contained flutter-dir to FlutterDir.
    This results in the FlutterDir.
  5. Add in environment variables of your account to the PATH-variable of USER context separated by ';' the explicit full path to flutter\bin: $(FlutterDir)\bin
    1. Test:
      Start a cmd console (in START/RUN type: cmd)
    2. type:
      flutter -h <return>
      flutter should show you its help text if all is well until now.
  6. in cmd type:
    flutter doctor <return>
    • flutter checks its environment and will most likely tell you, that
      • Android SDK is missing
      • Android Studio is missing
      • it may also query for chrome but this is not needed

Android Studio installation

  1. Install Android Studio for windows:
    https://developer.android.com/studio
    • follow the default setting and ensure the installation is done to AndroidStudioDir
  2. After installation start Android Studio and let it update if it queries for some
  3. Press NEXT-buttons until it is no longer shown
  4. Press FINISH and follow until finish
  5. On Welcome-Page go into plugins and
    • Install dart
    • Install flutter
    • and let Android Studio restart
  6. On welcome page select projects: More Action/SDK Manager and than Tab SDK-Tools.
    • Ensure all "Android SDK"* Entries are installed and especially
    • ensure "Android SDK command line tools" to be installed
  7. Close the SDK Dialog
  8. If you wish to use simulated mobiles you may later select in "more actions" AVD Manager and create emulated devices as you need.

Associate Flutter and Android Studio

  1. Tell Flutter where to find Android Studio:
    in cmd console type:
    flutter config --android-studio-dir "$(AndroidStudioDir)"
    The quotes are mandatory if the path conatains for exc. BLANKs
  2. now you need to accept the SDK licenses:
    in cmd console type:
    flutter doctor --android-licenses
    and accept all.

Final check of flutter installation

  • In new cmd-console type:
    flutter doctor
    it should now tell all is OK. (but maybe, Visual Studio or Chrome not needed) Image

Retroshare mobile: Prepare project

Main package

  1. Github Desktop: clone Retroshare mobile locally as RSMobileDir
    (https://github.com/RetroShare/retroshare-mobile)
  2. Open a cmd window (type cmd in START)
  3. Change directory into Retroshare mobile dir
  4. Type:
    flutter pub get<return>
    to update the flutter package dependancies as needed in the project.
  5. Open the RSMobileDir in Android Studio ( File -> Open )
  6. Set Flutter SDK Path & Dart SDK Path in Android Studio
    • File -> Settings -> Languages & Frameworks -> Flutter -> Set Flutter SDK Path:
    • $(FlutterDir)\flutter and click on OK
    • File -> Settings -> Languages & Frameworks -> Dart -> Set Dart SDK Path:
    • $(FlutterDir)\bin\cache\dart-sdk and click on OK

Prepare your Project for use with emulated devices

  1. Within the opened Android Studio on the left side in the project-tab open the path:
    "retroshare-mobile/android/app/src/main/java/io/GeneratedPluginRegistrant.java"
  2. Start "GeneratedPluginRegistrant.java" by dobbleclick on it.
  3. On the right side on top of the opened registrant:
    if you see a note "Module SDK is not defined",
    than click the button "Setup SDK" on the right side of this note.
  4. In the opened dialog select any android SDK and click OK.
  5. Restart Android Studio.

Now your project - this is to do in any new project - is able to define and use emulated Phones.

Activate USB Debug Mode of the mobile

  1. In settings type usb in search
  2. Select usb-debugging
  3. Activate it
  4. Plug the mobile with usb to the pc
  5. if this is the first time a dialog appears to accept the key; accept it
  6. check in cmd console if the device is available
    • cmd:
      flutter devices<return>
      should now list your mobile as availabel

Run the RestroShare Mobile

Type in cmd console:

flutter run [[--release]]<return>

without release it will run in debug mode

Debugging and Tracing

Debuging RS-Mobile

RS-Mobile is debugable simply with Android-Studio as usual with. Just intuitiv and relative comfortable.

Tracing RS-mobile in the context of the android-activities

Open a cmd-console in the directory of the android ../sdk/patform-tools. There you will find the adb.exe (Android Debug Bridge). This tool enables you for excample to get the tracefiles from your android-device by

adb logcat > trace.txt<return>

You may filter the content of trace.txt than by "restroshare" to get only the lines of the client and the service without other android contextual activities.

Debugging RS-Service-Apk

TBD; actual not knwon how to setup a debug-environment fort it.
Hints in context: https://gitlab.com/elRepo.io/elRepo.io-android/-/issues/43

Tracing RS-Service in the context of the android-activities

As above with the adb.exe tool.
If you want manually check the communication interface of the servcice you may use the cUrl tool.
To use it you must establich a redirection of the ports by:

adb forward tcp:9091 tcp:9092

than you should be able to talk to the servcie direcly
for exc. like:

curl http://127.0.0.1:9091/RsJsonApi/version -v

This would for exc generate an output like

Trying 127.0.0.1...  
TCP_NODELAY set  
Connected to 127.0.0.1 (127.0.0.1) port 9091 (#0)
GET /RsJsonApi/version HTTP/1.1  
Host: 127.0.0.1:9091  
User-Agent: curl/7.55.1  
Accept: */*  

HTTP/1.1 200 OK  
Access-Control-Allow-Headers: Authorization,DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range  
Access-Control-Allow-Methods: GET, POST, OPTIONS  
Access-Control-Allow-Origin: *  
Access-Control-Expose-Headers: Content-Length,Content-Range  
Connection: close  
Content-Length: 116  
Content-Type: application/json  
  
{"major": 0,  
 "minor": 6,  
 "mini": 6,  
 "extra": "-38-g25f58bc10",  
 "human": "0.6.6-38-g25f58bc10"  
}* Closing connection 0