Develop Reference

implementing hilt in android with kapt Execution failed for task ':app:kaptDebugKotlin'

I have been using hilt in my several android projects. But since I have updated my android studio to latest version Chipmunk// 2021.2.1, this error comes every time when I just build project
Execution failed for task ':app:kaptDebugKotlin'.
A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptWithoutKotlincTask$KaptExecutionWorkAction
java.lang.reflect.InvocationTargetException (no error message)
I am checking it on sample app which is just just one dependency injection, using hilt and kapt.
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
allprojects {
repositories {
google()
mavenCentral()
maven { url 'https://jitpack.io' }
}
}
dependencies {
// Hilt Classpath for Java
classpath 'com.google.dagger:hilt-android-gradle-plugin:2.38.1'
}
}
plugins {
id 'com.android.application' version '7.2.1' apply false
id 'com.android.library' version '7.2.1' apply false
id 'org.jetbrains.kotlin.android' version '1.7.10' apply false
}
task clean(type: Delete) {
delete rootProject.buildDir
}
apply plugin: 'com.android.application'
apply plugin: 'org.jetbrains.kotlin.android'
apply plugin: 'kotlin-kapt'
apply plugin: 'dagger.hilt.android.plugin'
android {
compileSdk 32
defaultConfig {
applicationId "com.example.hiltkotlinpractice"
minSdk 21
targetSdk 32
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:1.7.0'
implementation 'androidx.appcompat:appcompat:1.4.2'
implementation 'com.google.android.material:material:1.6.1'
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation("com.google.dagger:hilt-android:2.38.1")
kapt("com.google.dagger:hilt-android-compiler:2.38.1")
kapt 'androidx.hilt:hilt-compiler:1.0.0'
}
#HiltAndroidApp
class App: Application()
#Module
#InstallIn(ActivityComponent::class)
class AppModule {
#Provides
fun provideInterface(): APIProvider {
return APIProvider()
}
}
class Repo #Inject constructor(
val apiProvider: APIProvider
) {
fun get() = apiProvider.getData()
}
#AndroidEntryPoint
class MainActivity : AppCompatActivity() {
private val TAG = "MainActivity"
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val repo = Repo(APIProvider())
Log.d(TAG, repo.get())
}
}

Try using "annotationProcessor" instead of the "kapt" in the build.gradle dependencies. Worked for me.

Unresolved reference:database for Firebase Realtime database in my Kotlin program

I am trying to use Firebase Realtime database in Kotlin.
I have followed this tutorial but I think that something is wrong, because I get an error before compiling when I want to retrieve an instance of the database (Unresolved reference DataBasereference (or database if I uncomment the first line of the function tryToRead).
This is the code:
MainActivity.kt
package com.example.spesapp
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import com.google.firebase.ktx.Firebase
class MainActivity : AppCompatActivity() {
private lateinit var database: DataBasereference //Here I see "Unresolved reference"
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
fun tryToRead(){
//val database = Firebase.database
val myref = database.getReference
}
}
Gradle (module level)
plugins {
id 'com.android.application'
id 'org.jetbrains.kotlin.android'
id 'com.google.gms.google-services'
}
android {
compileSdk 32
defaultConfig {
applicationId "com.example.frangelapp"
minSdk 21
targetSdk 32
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:1.7.0'
implementation 'androidx.appcompat:appcompat:1.4.1'
implementation 'com.google.android.material:material:1.5.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
implementation platform('com.google.firebase:firebase-bom:30.0.1')
implementation 'com.google.firebase:firebase-analytics-ktx'
implementation 'com.google.firebase:firebase-auth-ktx'
implementation 'com.google.firebase:firebase-firestore-ktx'
implementation 'com.google.firebase:firebase-firestore'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}
Gradle (Project level)
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
// Check that you have the following line (if not, add it):
google() // Google's Maven repository
}
dependencies {
// Add this line
classpath 'com.google.gms:google-services:4.3.10'
}
}
plugins {
id 'com.android.application' version '7.1.1' apply false
id 'com.android.library' version '7.1.1' apply false
id 'org.jetbrains.kotlin.android' version '1.6.10' apply false
}
task clean(type: Delete) {
delete rootProject.buildDir
}
I don't know what is the error. The tutorial seemed to be very easy, but I am facing with this problem.
Thanks in advance

You get the following error:
Unresolved reference DataBasereference
Because you have not added the Realtime Database dependency in your project. To solve this, simply add:
implementation 'com.google.firebase:firebase-database-ktx'
Inside your build.gradle file.

Cannot implement #Parcelize annotation

I am trying to implement #Parcelize annotation in kotlin to a data class, but it looks as if I forgot to implement something. Even when I try to import kotlinx.parcelize, Android Studio does not know the parcelize option. I implemented kotlin-parcelize and kotlin version is 1.4.21, which should be okay.
Here are my Gradle files:
plugins {
id 'com.android.application'
id 'kotlin-parcelize'
id 'kotlin-android'
id 'kotlin-kapt'
}
android {
compileSdkVersion 29
defaultConfig {
applicationId "com.benzeneapps.ciphers"
minSdkVersion 22
targetSdkVersion 29
versionCode 1
versionName "0.0.1"
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
}
buildFeatures {
viewBinding true
dataBinding true
}
}
dependencies {
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'com.google.android.material:material:1.2.1'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
testImplementation 'junit:junit:4.13.1'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
implementation "androidx.core:core-ktx:1.3.2"
implementation "androidx.room:room-ktx:2.2.6"
kapt "androidx.room:room-compiler:2.2.6"
androidTestImplementation "androidx.room:room-testing:2.2.6"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0"
implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.2.0"
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.2.0"
annotationProcessor "androidx.lifecycle:lifecycle-compiler:2.2.0"
}
repositories {
maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
mavenCentral()
}
Project Gradle File
buildscript {
repositories {
google()
jcenter()
maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
}
dependencies {
classpath "com.android.tools.build:gradle:4.1.1"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.21"
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
How I tried to implement it.
import kotlinx.parcelize.Parcelize
import android.os.Parcelable
#Parcelize
data class Cipher(val id: Int, val name: String): Parcelable

Apply kotlin-android before kotlin-parcelize:
plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-parcelize'
}

This works for me Add this to your build.gradle file
plugins {
id 'kotlin-android-extensions'
}

Getting problems when trying to setup Jetpack Compose Found interface rPluginContext

So, I'm trying to let jetpack compose run with a simple example, I have already updated my kotlin plugin to 1.4.0 and also updated all my build gradle with the jetpack compose documentation, but I got this error when compiling
java.lang.IncompatibleClassChangeError: Found interface
org.jetbrains.kotlin.backend.common.extensions.IrPluginContext, but
class was expected at
androidx.compose.plugins.kotlin.ComposeIrGenerationExtension.generate(ComposeIrGenerationExtension.kt:41)
I have also downloaded the canary version of Android studio
build.gradle project
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
ext.kotlin_version = "1.4.0-rc"
repositories {
google()
jcenter()
maven{
url "https://dl.bintray.com/kotlin/kotlin-eap/"
}
}
dependencies {
classpath "com.android.tools.build:gradle:4.0.1"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
maven{
url "https://dl.bintray.com/kotlin/kotlin-eap/"
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle app
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileSdkVersion 30
buildToolsVersion "30.0.1"
defaultConfig {
applicationId "com.jetpackcompose"
minSdkVersion 22
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
buildFeatures {
// Enables Jetpack Compose for this module
compose true
}
// Set both the Java and Kotlin compilers to target Java 8.
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
composeOptions {
kotlinCompilerVersion kotlin_version
kotlinCompilerExtensionVersion "0.1.0-dev13"
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
implementation 'androidx.core:core-ktx:1.3.1'
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.ui:ui-core:0.1.0-dev13'
implementation 'androidx.ui:ui-tooling:0.1.0-dev13'
implementation 'androidx.ui:ui-layout:0.1.0-dev13'
implementation 'androidx.ui:ui-material:0.1.0-dev13'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
kotlinOptions {
jvmTarget = "1.8"
freeCompilerArgs += ["-Xallow-jvm-ir-dependencies", "-Xskip-prerelease-check"]
}
}
But I cant compile the app, I'm trying to run the basic example
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent{
sayHello()
}
}
#Preview
#Composable
fun sayHello(){
Text("Hello World")
}
}
Does anyone knows why this error is thrown ?

Using Kotlin version 1.4.10 instead of 1.4.20 solved my problem.

Try to update Compose version to 0.1.0-dev16. Looks like 0.1.0-dev13 isn't compatible with Kotlin 1.4-rc

Error in supressing #InstallIn check whilst migrating from Dagger to Hilt using flag -Adagger.hilt.disableModulesHaveInstallInCheck=true

I have been recently trying to migrate my Android App from Dagger to Hilt.
I would like to carry out the entire migration in phases and hence was trying to suppress the Hilt warning for not using #InstallIn for modules.
Have been following the migration guide given here: https://dagger.dev/hilt/migration-guide.html
Also found the flag which disables the #InstallIn check here: https://dagger.dev/hilt/compiler-options.html#disable-install-in-check
However, I have been struggling to get this flag to work.
To understand the issue better, I tried to migrate the Dagger Codelab (https://codelabs.developers.google.com/codelabs/android-dagger/#0) to Hilt.
Didn't find success even there.
Could someone please point out the error? I have attached the build.gradle files and the errors generated below.
Project Level build.gradle file
buildscript {
ext.kotlin_version = '1.3.61'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.6.1'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath "com.google.dagger:hilt-android-gradle-plugin:2.28-alpha"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
App Level build.grade file
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
apply plugin: 'dagger.hilt.android.plugin'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "com.example.android.dagger"
minSdkVersion 14
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "com.example.android.dagger.MyCustomTestRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
sourceSets {
String sharedTestDir = 'src/sharedTest/java'
test {
java.srcDir sharedTestDir
}
androidTest {
java.srcDir sharedTestDir
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = "1.8"
}
tasks.withType(JavaCompile) {
configure(options) {
options.compilerArgs << "-Adagger.hilt.disableModulesHaveInstallInCheck=true"
}
}
}
dependencies {
def dagger_version = "2.27"
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation "androidx.appcompat:appcompat:1.1.0"
implementation "androidx.core:core-ktx:1.2.0"
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'androidx.lifecycle:lifecycle-livedata:2.2.0'
implementation "com.google.dagger:dagger:$dagger_version"
kapt "com.google.dagger:dagger-compiler:$dagger_version"
testImplementation 'junit:junit:4.12'
testImplementation 'org.mockito:mockito-core:3.3.1'
testImplementation 'android.arch.core:core-testing:1.1.1'
def androidx_test_version = "1.2.0"
androidTestImplementation "androidx.test:runner:$androidx_test_version"
androidTestImplementation "androidx.test:core-ktx:$androidx_test_version"
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
kaptAndroidTest "com.google.dagger:dagger-compiler:$dagger_version"
implementation "com.google.dagger:hilt-android:2.28-alpha"
kapt "com.google.dagger:hilt-android-compiler:2.28-alpha"
}
Generated warning and errors:
e: D:\androidLearn\dagger\android-dagger\app\build\tmp\kapt3\stubs\debug\com\example\android\dagger\di\AppSubcomponents.java:7: error: [Hilt]
public final class AppSubcomponents {
^
com.example.android.dagger.di.AppSubcomponents must also be annotated with #InstallIn.
[Hilt] Processing did not complete. See error above for details.
e: D:\androidLearn\dagger\android-dagger\app\build\tmp\kapt3\stubs\debug\com\example\android\dagger\di\StorageModule.java:7: error: [Hilt]
public abstract class StorageModule {
^
com.example.android.dagger.di.StorageModule must also be annotated with #InstallIn.
[Hilt] Processing did not complete. See error above for details.
w: warning: The following options were not recognized by any processor: '[dagger.hilt.android.internal.disableAndroidSuperclassValidation, kapt.kotlin.generated]'

You can add the compiler option to your app/build.gradle file in the android -> defaultConfig block like this:
android {
...
defaultConfig {
...
//TODO: remove this after migration to Hilt
javaCompileOptions.annotationProcessorOptions.arguments['dagger.hilt.disableModulesHaveInstallInCheck'] = 'true'
}
}

You can also add the same thing like below:
defaultConfig {
javaCompileOptions {
annotationProcessorOptions {
arguments["dagger.hilt.disableModulesHaveInstallInCheck"]="true"
}
}
}