App Crashes On Startup Due To java.lang.IllegalArgumentException: column '_id' does not exist

Question

Whenever I start my app, I get a java.lang.IllegalArgumentException: column \'_id\' does not exist error in my LogCat. I have created the column \'_id\'

Answer 1

Um not sure if you've just pasted it in wrong but:

 DataHelper = new DataHelper(this);
 Cursor c = (Cursor) DataHelper.selectAll();

is wrong. You need to declare it to an object and call your methods on the initialised DataBase object:

 DataHelper dataHelper = new DataHelper(this);
 Cursor c = (Cursor) dataHelper.selectAll();

Oh my bad you've just declared your variable name with an Uppercase D , this isn't recommended nor standard java coding style.

http://java.about.com/od/javasyntax/a/nameconventions.htm