I am trying to implement a Room database but my app crashes

# android

[Jetbrains Ttvna]

I am trying to implement a Room database but my app crashes

[Jetbrains Ttvna]

https://github.com/pabloscloud/Reply/tree/Create-database-%232

[Jetbrains Ttvna]

I get the following error:

[Jetbrains Ttvna]

I am wondering if I need the dependency "kapt"?

[Jetbrains Ttvna]

I uploaded the whole project to the branch I shared above. I was following a

yt tutorial▾

where I created the following files:

• Item
• ItemDao
• ItemDatabase
• ItemEvent
• ItemState
• ItemViewModel

[Jetbrains Ttvna]

Ok, every file is a kotlin file. Even the build gradle ends with .kts. I don't understand why you are reacting with "NOT KOTLIN"

[Jetbrains Ttvna]

What would be a suitable place to ask this?

[Francesc]

Ok, every file is a kotlin file. Even the build gradle ends with .kts. I don't understand why you are reacting with "NOT KOTLIN"

would you have the same issue if you were doing this in Java? If yes, then it's not relevant in this forum

[Jetbrains Ttvna]

I don't know. I started with kotlin development. Never used Java. I am new to android development.

[Jetbrains Ttvna]

Is there a general or off-topic channel then?

[Matthew]

It looks like the Room compiler isn't running against your code, probably because you need to be using kapt or ksp instead of annotationProcessor
https://developer.android.com/training/data-storage/room#setup

[Jetbrains Ttvna]

Thanks Matthew!

I tried adding both

// To use Kotlin annotation processing tool (kapt)
kapt("androidx.room:room-compiler:$room_version")
// To use Kotlin Symbol Processing (KSP)
ksp("androidx.room:room-compiler:$room_version")

but I got the errors:
"Type mismatch. Required: KaptOptions Found: String"
"Unresolved reference: ksp"

[Jetbrains Ttvna]

Screenshot 2023-07-31 at 19.12.37.png

[Francesc]

you can't use both at the same time

[Francesc]

and to use ksp you need to add the dependency in the main build.gradle file

[Jetbrains Ttvna]

I figured that but I wanted to test if any of those would work

[Jetbrains Ttvna]

and to use ksp you need to add the dependency in the main build.gradle file

Isn't that what I did?

[Francesc]

no, hold on a sec

[Francesc]

if you use a catalog, you need this

com-google-devtools-ksp-plugin = { id = "com.google.devtools.ksp", version.ref = "com-google-devtools-ksp-plugin-version" }

and then in the main build.gradle file you add this

plugins {
    alias(libs.plugins.com.github.ben.manes.versions)
    alias(libs.plugins.com.google.devtools.ksp.plugin) <----------
    alias(libs.plugins.io.gitlab.arturbosch.detekt.plugin)
}

[Francesc]

this project uses room with ksp, you can have a look for reference (note that this is only in the branch refactor/mvi) https://github.com/fvilarino/Password-Generator/tree/refactor/mvi

[Jetbrains Ttvna]

with "main" you mean the projects build.gradle?

[Francesc]

yes

[Jetbrains Ttvna]

Ok, added the plugin (complains about unresolved reference: com) but no idea where I'd add

if you use a catalog, you need this

com-google-devtools-ksp-plugin = { id = "com.google.devtools.ksp", version.ref = "com-google-devtools-ksp-plugin-version" }

[Jetbrains Ttvna]

Appreciate your help!

[Francesc]

that line is in the libs.versions.toml file, only if you use version catalogs

[Jetbrains Ttvna]

Appreciate your support but I couldn't figure it out lol. It complains about com being an unresolved reference:

[Francesc]

please check the project I linked to for refernce, see how the library is defined in the toml file and then referenced in the build.gradle.kts files

[Jetbrains Ttvna]

Yeah I was!-) Didn't find the toml file at the same directory (root)

[Francesc]

it's inside the gradle top level folder

[Colton Idle]

Looks like youre getting help here, but if you want some other fourms, you can try

not kotlin but kotlin colored should go to:
https://discord.com/invite/D2cNrqX
http://android-united.community/
https://androidchat.co/

[Jetbrains Ttvna]

Thanks @Colton Idle! Seems like a good idea

[Jetbrains Ttvna]

Got it working

[Jetbrains Ttvna]

solution:

this in plugins section of the modules build.gradle.kts:

kotlin("kapt") version "1.7.21"

this in dependency section of the modules build.gradle.kts:

implementation("androidx.room:room-runtime:$room_version")
implementation("androidx.room:room-ktx:$room_version")
kapt("androidx.room:room-compiler:$room_version")

[Jetbrains Ttvna]

Thanks to everyones help!