Trying to create room database with android, but keep getting dependency error

Question

Android.com says to add these dependencies to your gradle file. I keep getting an error on the lines that start with kapt and ksp saying could not find those methods. Any ideas? Sorry I am not smart.

//below is what android says to put in

def room_version = "2.3.0"

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

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

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

// optional - RxJava2 support for Room
implementation "androidx.room:room-rxjava2:$room_version"

// optional - RxJava3 support for Room
implementation "androidx.room:room-rxjava3:$room_version"

// optional - Guava support for Room, including Optional and 
ListenableFuture
implementation "androidx.room:room-guava:$room_version"

// optional - Test helpers
testImplementation("androidx.room:room-testing:$room_version")

// optional - Paging 3 Integration
implementation("androidx.room:room-paging:2.4.0-alpha04")

Build file 'C:\Users\tanne\AndroidStudioProjects\LazyAlarm\app\build.gradle' line: 51

A problem occurred evaluating project ':app'.

Could not find method kapt() for arguments [androidx.room:room-compiler:2.3.0] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

////////////////////////////////////////// //gradle file below

plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-android-extensions'
}

android {
compileSdk 31

defaultConfig {
    applicationId "com.example.lazyalarm"
    minSdk 22
    targetSdk 31
    versionCode 1
    versionName "1.0"


    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
    jvmTarget = '1.8'
}
}

 dependencies {

implementation 'androidx.core:core-ktx:1.6.0'
implementation 'androidx.appcompat:appcompat:1.3.1'
implementation 'com.google.android.material:material:1.4.0'
implementation 'androidx.room:room-ktx:2.3.0'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
def room_version = "2.3.0"

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

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

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

// optional - RxJava2 support for Room
implementation "androidx.room:room-rxjava2:$room_version"

// optional - RxJava3 support for Room
implementation "androidx.room:room-rxjava3:$room_version"

// optional - Guava support for Room, including Optional and ListenableFuture
implementation "androidx.room:room-guava:$room_version"

// optional - Test helpers
testImplementation("androidx.room:room-testing:$room_version")

// optional - Paging 3 Integration
implementation("androidx.room:room-paging:2.4.0-alpha04")

}

Most likely, you are missing 1-2 plugins. You might want to edit your question and post the entire Gradle file (just one copy, not two), and remove the stack trace from the error report (as that is not informative, but makes your question appear very long). — CommonsWare
– CommonsWare, Commented Aug 6, 2021 at 23:34
I apologize for the mess. I have cleaned it up and posted the entire gradle file. Please let me know if I am missing a plugin. I do get a depreciated warning for kotlin-android-extensions, if you know what to use to replace this that would be great, as it auto connects my xml items. — auotive
– auotive, Commented Aug 7, 2021 at 2:16

CommonsWare · Accepted Answer · 2021-08-07 23:22:01Z

28

You appear to have copied a bunch of lines into your build.gradle file verbatim from Google's documentation. Unfortunately, their documentation has issues. In particular, many of those lines represent choices, and you need to choose which ones you need. In particular, pick exactly one of these two lines:

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

...and pick one of these four lines:

implementation("androidx.room:room-ktx:$room_version")
implementation "androidx.room:room-rxjava2:$room_version"
implementation "androidx.room:room-rxjava3:$room_version"
implementation "androidx.room:room-guava:$room_version"

Then, depending on your choice from that first pair, you may need to add another plugin to your plugins block at the top of the file. If you choose the kapt line, you need to add id 'kotlin-kapt'. I have not used the ksp option and do not know what plugin you need for it, if any.

edited Aug 7, 2021 at 23:22

answered Aug 7, 2021 at 10:50

CommonsWare

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3 Comments

auotive Over a year ago

It was the plugin I needed and the removal of the ksp. Thank you for your answer, I am sorry I seem lacking in my knowledge. For some reason I read it off androids website that I was to place all of that in my code, and the optional stuff would just be extra fluff and not crash the program. I was also reading from a different site that had outdated information, so it is a bit confusing.

CommonsWare Over a year ago

@auotive: I agree that Google's documentation sometimes can be confusing in how they present things like Gradle dependencies. I am glad that you got it working!

Mister Smith Over a year ago

As of today, Google's official docs are still misleading everyone.

arthur bryant · Accepted Answer · 2022-05-17 13:36:51Z

6

use ksp

The following works for me.

settings.gradle

 pluginManagement {
 repositories {
     gradlePluginPortal()
     google()
 }
 plugins {
     id("com.google.devtools.ksp") version "1.6.20-1.0.5"
 }

ksp version reference: Maven Repository: com.google.devtools.ksp

app/build.gradle

plugins {
  id 'com.google.devtools.ksp'    }

implementation("androidx.room:room-runtime:$rootProject.roomVersion")
annotationProcessor("androidx.room:room-compiler:$rootProject.roomVersion")
ksp("androidx.room:room-compiler:$rootProject.roomVersion")

build.gradle

 buildscript {  

 ext {
  // app dependencies
  kotlinVersion = '1.6.20'
  roomVersion = '2.4.2' }
 }

answered May 17, 2022 at 13:36

arthur bryant

4357 silver badges6 bronze badges

1 Comment

Tonnie Over a year ago

Tried this but it didn't work out for me, in fact I got an error that

This version (1.1.1) of the Compose Compiler requires Kotlin version 1.6.10 but you appear to be using Kotlin version 1.6.20

Rinkal Patel · Accepted Answer · 2021-08-07 08:58:06Z

2

try this dependency

def room_version = "1.1.1"
implementation "android.arch.persistence.room:runtime:$room_version"
annotationProcessor "android.arch.persistence.room:compiler:$room_version"
testImplementation "android.arch.persistence.room:testing:$room_version"

answered Aug 7, 2021 at 8:58

Rinkal Patel

1563 bronze badges

Comments

Tonnie · Accepted Answer · 2022-08-22 15:57:18Z

1

Solved this by adding androidx.room.room-paging library in the gradle file(app)

// room-paging artifact
    implementation 'androidx.room:room-paging:2.4.3'

You can find the latest dependency from the Google's Maven Repository.

In addition, I had these other dependencies for ROOM and Paging 3.

// Room
    implementation "androidx.room:room-runtime:2.4.3"
    kapt "androidx.room:room-compiler:2.4.3"

    // Paging 3.0
    implementation 'androidx.paging:paging-compose:1.0.0-alpha16'

answered Aug 22, 2022 at 15:57

Tonnie

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Comments

poyan amini · Accepted Answer · 2024-03-11 14:18:50Z

FOR NEW VIRSION ANDROID:

you can use this way too, for new virsion of android studio whit libs:

step 1 : go to libs.version.toml =>

add in version part this (room = "2.6.1")

step 2 : add to libraries =>

room = { group = "androidx.room", name = "room-ktx", version.ref = "room" }
room-runtime = { group = "androidx.room", name = "room-runtime", version.ref = "room" }
room-compiler = { group = "androidx.room", name = "room-compiler", version.ref = "room" }

tip: you should after every add code touch sync

step 3: go to build.gradle.ktx and add this in the dependencies =>

implementation(libs.room)
implementation(libs.room.runtime)
annotationProcessor(libs.room.compiler)

if you going to use KSP you must add this too :

step 1: go to https://github.com/google/Ksp

step 2 : check the releases , for example for now: 1.9.21-1.0.15

step3 : go to libs.version.toml =>

add in version part this (ksp = "1.9.21-1.0.15")

step 4: at the page go to pluguns ad this:

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

tip: you should after every add code touch sync

step 5: go to build.gradle.ktx(project) in the plugins and add this =>

alias(libs.plugins.ksp) apply false

sync

step 6 : go to build.gradle.ktx (Moudule) and add this in plugin =>

alias(libs.plugins.ksp)

sync

step 7 : go to build.gradle.ktx (Moudule) and add this in dependencies =>

ksp(libs.room.compiler)

imad bouhafer · Accepted Answer · 2022-12-17 11:21:20Z

0

i faced the same problem and came here to solve nothing worked for me ((with kotlin not java)) until i added the pluging :

id 'kotlin-kapt'

answered Dec 17, 2022 at 11:21

imad bouhafer

111 bronze badge

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