Room allows you to observe queries in one of two ways, either by using RxJava or LiveData. In this video, learn how to use either approach.
- [Instructor] Room allows you to observe queries…in one of two ways, either by using the RxJava library…or by means of LiveData,…which is part of the Architecture Components library.…For example, if you wanted to retrieve…all active email records in an observable manner,…meaning, as the underlying database table changes,…you're notified in your application.…If you were using RxJava, you would change the return type…from a simple list of emails…to a Flowable of a list of email objects.…
And a similar change would be required to use LiveData.…You will need to wrap the desired return type…in a LiveData declaration.…So far, this is all you would need to do…in order to indicate that you wanna work…with observable queries.…The next main change…would be in how you set up the observer.…For RxJava, this involves calling the method…which returns your Flowable.…So in this example, we're gonna get all active emails.…Then you choose the thread that you want to observe on.…
On Android, most of the time, we'll be observing changes…
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
Q: This course was updated on 05/24/2018. What changed?
A: New videos were added that cover working with Room.
Learning Firebase Cloud Messaging for Androidwith Joe Marini52m 49s Intermediate
1. SQLite Basics
2. SQLite Beyond the Basics
3. Working with Room
4. Working with Cupboard
5. Realm Basics
6. Realm Beyond the Basics
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