nikis questions

nikis answers

• How to prevent user from exiting an app when back button is pressed [duplicate]
• Android: Display a toast message after a custom time when a button is clicked
• cancel repeating alarm at specific time
• TimerTask vs AlaramManager, Which one should I use?
• select query in sqlite android
• Java static self-references
• Get random row from SQLite Database Android SDK
• visibility of variables in SQLiteOpenHelper android
• Java null element in ArrayList
• Integer comparison in Java [duplicate]