Android Room Livedata Tutorial

When room queries return livedata the queries are automatically run asynchronously on a background thread.

Android room livedata tutorial.

Room uses the dao to issue queries to its database. Livedata is an observable data holder class. By default to avoid poor ui performance room doesn t allow you to issue queries on the main thread. Android room with livedata example tutorial.

Here we have a room class notedatabase in which we had to declare all our entities and version of the database getinstance method will return the room database instance. For this we. Android room with livedata example tutorial. It s an observable data holder class and it is also lifecycle aware.

Live data livedata class is from lifecycle library for observing the data changes. The room persistence library provides an abstraction layer over sqlite to allow for more robust database access while harnessing the full power of sqlite. You can use livedata independently from room but to do so you must manage data updates. Livedata is an observable data holder part of the android jetpack.

Room takes care of mundane tasks that you used to handle with an sqliteopenhelper. This cache which serves as your app s single source of truth allows users to view a consistent copy of key information within your app. Here is the video from android developers channel. In part 2 of the architecture components tutorial we will set up a new android studio project add the room and lifecycle dependencies and then create our n.

If you want to modify the database do have a look at migration. In part 6 of the architecture components tutorial we will set up a recyclerview to display the entries from our database table in our activity. If you are new to android application development or you have been working with android then you will be familiar with sqlite which is an inbuilt local database for android.