Install bdk-jni

1a. Clone bdk-jni project

2a. Follow README instruction to publish .aar files to local maven repository

OR

1b. Copy bdk-jni-debug-0.2.0.aar to app/libs folder in BDWallet project

Build

1. Build with gradle

   ./gradlew build
   

Test

With local REGTEST electrs server

1. Install docker desktop

2. Create aliases to start, stop, view logs and send cli commands to container

   alias rtstart='docker run -d --rm -p 127.0.0.1:18443-18444:18443-18444/tcp -p 127.0.0.1:60401:60401/tcp --name electrs bitcoindevkit/electrs'
   alias rtstop='docker kill electrs'
   alias rtlogs='docker container logs electrs'
   alias rtcli='docker exec -it electrs /root/bitcoin-cli -regtest -rpcuser=admin -rpcpassword=passw $@'

3. Use aliases to start container, view logs, run cli command, stop container

   rtstart  
   rtlogs  
   rtcli help    
   rtcli getwalletinfo    
   rtcli getnewaddress  
   rtstop

4. Use "AVD Manager" to lauch a virtual device (eg. "Pixel 3a API 30" or similar)

5. From localhost command line setup adb with port forwarding, use same adb version as Android Studio

   ~/Android/Sdk/platform-tools/adb devices -l
   ~/Android/Sdk/platform-tools/adb -L tcp:localhost:5037 reverse tcp:60401 tcp:60401
   ~/Android/Sdk/platform-tools/adb -L tcp:localhost:5037 reverse --list

6. Open Android Studio "Build Variants" window (lower left)

7. Select Active Build Variant "localDebug"

8. Run or Debug "app"

9. Create a new wallet and create a deposit address

10. Send regtest coins to emulated wallet, and generate a block

    rtcli sendtoaddress <deposit address> 2.345
    rtcli getnewaddress
    rtcli generatetoaddress 1 <newaddress>