당신의 sdcard에 디렉토리에 저장 가속도계 출력의 파일을 만듭니다.
Create a file of the accelerometer output, with timestamp, that saves to your sdcard directory. Units are m/s2. Note: even if you don't have an SD card available on your device, you still have some sort of External Storage directory. Use a file manager app to find it.