December 2013
Beginner
416 pages
12h 45m
English
book
Learning Android™ Application Programming: A Hands-On Guide to Building Android Applications
by James Talbot, Justin McLean, Jorge Hernandez
Content preview from Learning Android™ Application Programming: A Hands-On Guide to Building Android ApplicationsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Creating a Database and Its Tables
As you’ve seen, you can create a database by using the SQLiteOpenHelper class. The methods of this class are called automatically by Android whenever the database needs to be created or updated.
You create the database file by calling the constructor of SQLiteOpenHelper, passing the database name and database version. The database is stored by default in the /data/data/APPLICATION_NAME/databases directory. In your application the database will be created at /data/data/com.androiddevbook.onyourbike.chapter5/databases/OnYourBike.db.
To create the database tables themselves, you need to use SQL. The SQL to create a table takes this form:
create table <tablename> ( <fieldname> <datatype>, ...
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