How to correctly add Room Persistence dependencies to my Jetack Compose Android app

Question

I have been struggling to add Room dependencies for a couple of days now(not proud). There is always an error no matter what i try. I am not the most experienced though.

I added the below from the Android docs site.

`val room_version = "2.5.2"

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

//1
// To use Kotlin annotation processing tool (kapt)
kapt("androidx.room:room-compiler:$room_version")

//2
// To use Kotlin Symbol Processing (KSP) (2)
ksp("androidx.room:room-compiler:$room_version")

// optional - Kotlin Extensions and Coroutines support for Room
implementation("androidx.room:room-ktx:$room_version")`

All depencdencies can resolve except what is marked 1 & 2. For 1, i get Type mismatch. Required: KaptOptions Found: String

For 2, i get Unresolved reference: ksp

I added these to my plugins from searches i did but to no avail. ` id("com.google.devtools.ksp") version "1.8.21-1.0.11" kotlin("android")

// Apply the Room and Kotlin Kapt plugins
kotlin("kotlin-kapt")
id("androidx.room.room-compiler")`

Any luck with this documentation? https://kotlinlang.org/docs/ksp-quickstart.html#make-ide-aware-of-generated-code — ryankuck, Sep 01 '23 at 14:01
Adding to my plugins has my app running now. But i don't think that's an ideal solution. Or is it? — Michael Appiah-kubi, Sep 01 '23 at 17:01

Gonzalo Ledezma Torres · Answer 1 · 2023-09-01T16:25:56.860

I had the same issue 3 months ago, my solution was this:

At the top of the build.gradle (:app) inside plugins

plugins {
    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
    id 'kotlin-kapt'
}

And then in your dependencies, same file

/* ROOM */
def roomVersion = "2.5.2" //this was 2.5.1 back then
implementation "androidx.room:room-ktx:$roomVersion"
kapt "androidx.room:room-compiler:$roomVersion"

Finally, check if Android Studio wrote a Room dependency for you before and delete it:

implementation 'androidx.room:room-common:2.5.2'

Documentation is here

score 0 · Answer 2 · answered Sep 02 '23 at 08:04

What properly worked was following the migration guide at Migrate from kapt to KSP

I used

ksp("androidx.room:room-compiler:$room_version")

Added the below to the project level build.grradle

plugins {
id("com.google.devtools.ksp") version "1.8.10-1.0.9" apply false}

Added the below to the module level build.gradle

plugins {
id("com.google.devtools.ksp")}

And remove everything added for the kapt

How to correctly add Room Persistence dependencies to my Jetack Compose Android app

2 Answers2