Android client development

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This guide will help you getting started with setting up a development environment for the Crazyflie Android client, running the app from source code and contributing code.

Installation

Requirements

  • An Android device running version 4.0 or higher (the code might be changed to run on lower versions, but this has not been tested yet)
  • USB On-the-go (OTG) cable (aka. USB Host cable) to connect the Android device to the Crazyradio dongle

Installing the Android Development Tools (ADT)

  • Download the most recent Android Development Tools from http://developer.android.com/sdk/index.html
    • get the latest ADT Bundle (eg. adt-bundle-windows-x86-20130917.zip for Win32)
  • Extract the zip file and start Eclipse (adt-bundle-windows-x86-20130917/eclipse/eclipse.exe)
  • Start the Android SDK Manager (Window -> Android SDK Manager)
    • select Android 4.0 (API 14) and install all of its components
    • using an actual Android device for development is recommended
    • If you still want to use the emulator for development on a Windows machine, then you should use the “Intel x86 Atom System Image”. (Make sure that you use the Intel x86 Emulator Accelerator (HAXM) when your machine support the VT-x extension. This speeds up the emulator considerably.)

If you have problems installing the ADT environment or setting up the emulator you might find some help here:

  • http://developer.android.com/sdk/installing/bundle.html
  • http://developer.android.com/tools/help/sdk-manager.html
  • http://developer.android.com/tools/devices/index.html
  • http://developer.android.com/tools/device.html

Getting the Crazyflie Android client source code

  • Install a Git client for your operating system
    • Windows client from http://msysgit.github.io
    • Linux client, e.g. on Debian based systems with “sudo apt-get install git”
  • The Eclipse Git plug-in (EGit) is already included in your ADT environment, but you should update it to the latest version
    • Use the Update manager (Help -> Install new software…)
    • Update site: http://download.eclipse.org/egit/updates
  • With the EGit plug-in you can checkout the Crazyflie Android client source code from https://github.com/bitcraze/crazyflie-android-client.git
    • or on the commandline: git clone https://github.com/bitcraze/crazyflie-android-client.git

Running the Android client from source code

  • On Windows: install USB drivers for your Android device (http://developer.android.com/tools/extras/oem-usb.html)
  • Enable USB debugging on your Android device (Settings > Developer options)
    • You might need to enable the developer options first!
  • Connect your PC to the Android device via USB or Wifi
  • “Run as Android application” (this deploys and installs the APK to your Android device)
  • Use a USB On-the-go (OTG) cable (aka. USB Host cable) to connect your Android device to the Crazyradio dongle
  • Run the Crazyflie app (see also Crazyflie Android client user guide)

More info about USB drivers, developer options and debugging setup can be found here:

  • http://developer.android.com/tools/device.html#setting-up

Reporting bugs or requesting features

Bugs and feature requests should be added as GitHub issues: https://github.com/bitcraze/crazyflie-android-client/issues

Contributing your code

If you consider contributing code, then you should create a github account, fork the crazyflie-android-client and send a pull request

Coding standard

Due to a lack of time and laziness the code is still messy, but in general the coding style should follow the Android Code Style Guidelines for Contributors.