XSensDot LSL Streamer

This project is based on the XSensDot Example app and extends it with an LSL streaming functionality.

Build against (possibly outdated)

• Android NDK 21.0.6113669
• Android SDK 29
• Android Studio 4.1.1
• cMake 3.12.4 + Ninja 1.10.2 (copy to CMake\bin folder): "cmake.dir=" in local.properties

LSL and Android instructions

1. Copy liblsl and liblsl-java into your android project's root folder. Library sources can be found on the official labstreaminglayer repository.
2. Tell gradle to include liblsl-java and where to find it (i.e. its build.gradle file in the liblsl-java folder). Copy the snippet into settings.gradle. Change the project folder for liblsl-Java according to your configuration (if necessary).

include 'liblsl-Java'

// Tell gradle where to find liblsl-Java
if(hasProperty("liblsl_java_dir")) {
    println("Looking for liblsl-Java in " + liblsl_java_dir)
    project(':liblsl-Java').projectDir = new File(liblsl_java_dir)
}
else {
    println("Looking for liblsl-Java in the default path.")
    println("Change this via 'gradle -Pliblsl_java_dir=path/here if this fails")
    project(':liblsl-Java').projectDir = new File("./liblsl-Java")
}

3. Sync gradle and make sure build.gradle for ...liblsl-java appears in the gradle scripts section
4. LSL needs to be compiled from source, hence the appropriate NDK and CMake inclduing a C++ compiler are needed. The version of CMake is crucial! Make sure you have the following versions to compile against (other might work, e.g. SDK and Android Studio):

• Android NDK 21.1.6352462
• Android SDK 29
• Android Studio 4.1.1
• Gradle 6.5
• CMake 3.12.4
• Ninja 1.10.2 (copy to CMake\bin folder)

You might need to tell Android Studio where to find CMake (or the correct version in case you have multiple). Copy this snippet into local.properties:

cmake.dir=<path>
# e.g. cmake.dir=C\:\\Program Files\\CMake

5. If using a low minimum SDK version, you might need to add the INTERNET permission in the manifest

<uses-permission android:name="android.permission.INTERNET" />