AnkiDroid: Anki on Android
See http://ichi2.net/anki/wiki/AndroidAnki

=== Running with Ant ===

1. Create a "local.properties" file containing the path to the Android SDK, for instance:
sdk.dir=/home/nico/programs/android-sdk

2. Plug in your Android phone via USB and run the following command: ant install-device

3. To install on an emulator run: ant install-emulator