Android Coding Note

Android data storage folder:
http://my.oschina.net/u/199733/blog/110454  (Chinese)
http://www.ozzysun.com/2010/11/android.html (Chinese)

String match
http://stackoverflow.com/questions/2275004/in-java-how-to-check-if-a-string-contains-a-substring-ignoring-the-case

Activity exit
http://stackoverflow.com/questions/14052849/how-to-close-all-activities-in-android-and-close-from-task-manager

NFC
http://stackoverflow.com/questions/10687482/android-launch-activity-multiple-times-on-an-nfc-tag
http://stackoverflow.com/questions/10278881/does-androids-nfc-foreground-dispatch-system-have-a-bug
- flow chart
http://www.imobilebbs.com/wordpress/archives/2813