A debug data server for Android. Allow an Android application to publish data for diagnostic purpose and to consume this data via a simple rest API from client applications.

Create a service to host the debug data server. And override onBuildServer() adding the required data sources.

@Override public void onBuildServer(DebugDataServer.Builder builder) {
    SharedPreferences sharedPrefs
            = PreferenceManager.getDefaultSharedPreferences(this);
    builder.interfaceName(sharedPrefs.getString(PREF_INTERFACE_NAME, "lo"))
            .port(sharedPrefs.getInt(PREF_PORT, 8080))
            .addStaticClass(DebugData.class);
}

Then in your main activity start the server with the following code.

DebugDataServer.start(this, AddsService.class, this);

This will callback to onDebugDataServerStarted(DebugDataServer debugDataServer) when the server is ready.

To run the sample project (adds-sample) install and run the APK.

gradle assembleDebug
adb install -r adds-sample/build/apk/adds-sample-debug-unaligned.apk

Be default it binds to localhost port 8080. Map this to a local port using adb.

adb forward tcp:8080 tcp:8080

Now the debug data can be queried/updated using simple curl commands.

curl http://localhost:8080/source

{
  "dataSources": [
    {
      "name": "DebugData"
    }
  ]
}

curl http://localhost:8080/source/DebugData

{
  "BOOLEAN_VALUE": true,
  "INT_VALUE": 1,
  "POJO_VALUE": {
    "d": "Test123",
    "b": true,
    "c": 1.2,
    "a": 1
  },
  "STRING_VALUE": "Hello World!"
}

curl http://localhost:8080/source/DebugData/STRING_VALUE

{
  "name": "STRING_VALUE",
  "propertySourceType": "FieldPropertySource",
  "value": "Hello World!"
}

curl -X PUT \
     -H "Content-Type: application/json" \
     -d '{"value": "Test 12345!!!"}' \
     http://localhost:8080/source/DebugData/STRING_VALUE

Because the main activity has registered to track changes as you change properties you should see them reflected in the main activity on the application.