Realm queries are a powerful way to filter your data. In this video Annyce shows you how to the use the isNotNull and contains conditions to filter your records.
- [Instructor] Realm queries are a powerful way…to filter your data.…Let's get started by adding the field names dependency…to our application.…We're here in the build.gradle file,…and right underneath line 33…where we have our Picasso dependency…we're going to add an annotationProcessor dependency,…and it's going to be from…dk.ilios:realmfieldnameshelper:1.1.1.…
Notice that we're using annotationProcessor…instead of a compile scope.…That's because this dependency is going to use…an annotationProcessor to generate our field's classes.…We can now sync our project and rebuild.…So, I'm going to click up here on Sync Now.…Once that's completed…I'll go up to the build menu…and choose Rebuild Project.…We can now take a look at the generated files.…
To do that we'll go over to the Project tab…and we'll open up build, generated, source,…apt, and then debug.…You'll now see a package…which corresponds to our models package.…If we expanded we have two fields classes,…one for recipe and one for RecipeStep.…If we open up the RecipeFields class,…
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By persisting your data, you can provide users with a more seamless experience with your app—even when they go offline. If you're an Android app developer, you have many data persistence options to choose from. In this course, learn about various options for storing your app's data in a database.
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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