I'd like to create a simple time tracking app for android, with a text entry box, and a submit button. The user shouldn't be able to submit unless there's something in the text box. When the user does enter an activity in the text entry box, and hits submit, the current time and date as well as the user's input should be appended to a text file stored on the sdcard in simple CSV format.
There should be a menu in the app with help, about, and "view log". When the user clicks on "view log", they should be taken to a view of the log in two columns (read from the CSV text file), one for "time and date", and one for "activity".