Goal I have an app with plenty of data, with a switch button, which switch the language (french or english) of the entire app. However, some of my data are stored in a Room database. I have two .db files : database_fr.db and database_en.db. Let’s say the app is currently in french, with the database_fr.db loaded. When the switch button
Tag: android-room
What should we do for nested objects in Room? [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 months ago. Improve this question If there is a structure like my JSON structure below, how should we create Entity Classes? There are no examples of this. While @embeded was
Android get ArrayList from Room Database in adapter class
I have a Room Database table with multiple columns (PartsTable). I need to fetch only one column from the table that contains one word String and I’m using a subset of a table as per google docs (PartsTuple). Now I need to create a function that will or something else that will return the ArrayList of fetched data, which I
Android room how to increment count field and updating specific row fields
I have the following schema I am implementing for counting button taps for a user . For example if the the user clicks on apple button I would like to store the type as primary key which would be a unique entry followed by the count for the number of times the user taps on apple button and for each
Relations between Room Tables Android
I am developping a chat app. I have two Entities And In MessageDao I want to get Contact phone correponding to the contact_id in MessageItem Answer You have three ways you can do this. 1) You can use a POJO with an @Embedded and an @Relation in which case you return MessageItem’s with the Contact e.g. :- along with an
Merging multiple LiveData sources?
To make it easier to visualize my problem I drew the following: I am using a RoomDatabase, a Repository, a Viewmodel and Livedata. Areas have a 1 to n relationship with Gateways and Gateways a 1 to n relationship with Items. I created both an AreaWithGateways entity and a GatewayWithItems entity. Items can move from a gateway to another, which
Room database not created
I’m trying to develop an app with Room. The project is in java. This is my first time using Room. I’ve followed the documentation and created class with @Database, @Dao & @Entity. However when I …
Room Database. Insert sucessfull but no data found
I’ve got a simple Room database setup as seen below: Entity Class @Entity public class User { @PrimaryKey public int uid; @ColumnInfo(name = “first_name”) public String firstName; @…
What is the best way to not use allowmainthreadqueries() using Android Room?
I always use allowmainthreadqueries() in Android Room. But many people say it is not recommend to do it. With this function, Room is very easy to use. But if i should change my app to not using this …
Why am I getting an error when trying to save a list in Room database with the help of a type converter?
I want to store a list of Integer type in a Room database. For this I wrote a converter that looks like: public class TypeConverter { static Gson gson = new Gson(); @androidx.room.TypeConverter …