Android relies on the ContentValues and Cursor classes to interact with a SQLite database. Learn how you can avoid polluting our user interface classes with such implementation details in this video.
- [Instructor] With our helper class in place…we can create the wrapper class that we will use…to isolate the SQLite classes.…In particular, Android relies on the content values…class to add records to the database…and then the cursor class to return the results…of queries on the database.…We don't need to pollute our activity classes…with such implementation details.…Therefore, we use a wrapper class…as an abstraction layer.…
This helps us to keep our code testable…and maintainable.…For now, this class will consist of the following methods.…Open, which will connect to the instance…of the SQLite database,…close which will close the connection,…create recipe, used to persist recipe records…to the database…and then finally, get all recipes.…This performs a SQL query to retrieve…all of the records.…
Let's switch over to Android Studio now.…We're going to create this class here…in the DB package.…Once again, we'll come over to DB…right click and go to new…and over to java class.…We're going to name it Topsy Turvy data source.…
To begin, Annyce Davis reviews using the de facto data persistence solution available on Android: SQLite. She takes you through basic SQLite concepts—such as how to create a database wrapper and insert data into a table—as well as a few more advanced topics. Next, she covers working with Cupboard, an open-source project dedicated to simplifying your SQLite interactions. To wrap up, she dives into working with Realm, an object database solution designed with mobile devices in mind. Throughout the course, Annyce discusses establishing relationships between database tables, creating and running queries, as well as performing data migrations.
- Overview of SQLite
- Defining a database table's schema
- Exploring SQLite create table syntax
- Executing create table statements
- Inserting data with a foreign key relation
- Inspecting the database using a terminal
- Updating and deleting records
- Working with Cupboard
- Working with Realm
Skill Level Intermediate
Android App Development: Unit Testingwith James P White2h 58m Intermediate
Learning Firebase Cloud Messaging for Androidwith Joe Marini52m 49s Intermediate
1. SQLite Basics
2. SQLite Beyond the Basics
3. Working with Cupboard
4. Realm Basics
5. Realm Beyond the Basics
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