Android Room Livedata Tutorial

It s an observable data holder class and it is also lifecycle aware.

Android room livedata tutorial.

Live data livedata class is from lifecycle library for observing the data changes. You can use livedata independently from room but to do so you must manage data updates. 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. However livedata has no publicly available methods to update the stored data.

Android room with livedata example tutorial. Room takes care of mundane tasks that you used to handle with an sqliteopenhelper. Android room with livedata example tutorial. If you want to modify the database do have a look at migration.

Livedata is an observable data holder part of the android jetpack. 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. For this we. 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.

Here is the video from android developers channel. Livedata is an observable data holder class. 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. The library helps you create a cache of your app s data on a device that s running your app.

When room queries return livedata the queries are automatically run asynchronously on a background thread. The room persistence library provides an abstraction layer over sqlite to allow for more robust database access while harnessing the full power of sqlite. Therefore if you want to update the stored data you must use mutablelivedata instead of livedata the mutablelivedata class adds two public methods that allow you to set the value of a livedata object.