via http://www.aep-emu.de/

Marat Fayzullin has ported his (commercial) GameBoy Advance emulator VGBA to the Android platform: VGBA for Android

Quote:
New in 3.7.3:
  • Improved virtual joystick look.
  • Added Japanese localization.
  • Fixed save feature in multilingual Final Fantasy 5 version (uses 6bit EEPROM).