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.

Dagger Hilt cannot create an instance of ViewModel having a constructor with arguments

After going through documentations and trying solutions of similar questions here on stackoverflow, nothing seems to fix the issue.
I tried altering all related dependencies, trying additional dependencies and tweaking the versions. Gradle builds successfully but there is a runtime error that through trial and error, the only method I found that could fix it was removing the argument from the ViewModel which is not desirable for me as the same setup used to work in my older projects.
RuntimeException
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example, PID: 17527
java.lang.RuntimeException: Cannot create an instance of class com.example.ui.MainViewModel
at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.kt:188)
build.gradle(:app)
plugins {
id 'com.android.application'
id 'org.jetbrains.kotlin.android'
id 'kotlin-kapt'
id 'dagger.hilt.android.plugin'
id 'com.google.devtools.ksp' version '1.6.10-1.0.2'
}
kotlin {
sourceSets {
debug {
kotlin.srcDir("build/generated/ksp/debug/kotlin")
}
release {
kotlin.srcDir("build/generated/ksp/release/kotlin")
}
}
}
android {
compileSdk 31
defaultConfig {
multiDexEnabled = true
applicationId "com.example"
minSdk 23
targetSdk 31
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
vectorDrawables {
useSupportLibrary true
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
coreLibraryDesugaringEnabled true
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
freeCompilerArgs += '-Xopt-in=kotlin.RequiresOptIn'
}
buildFeatures {
compose true
}
composeOptions {
kotlinCompilerExtensionVersion compose_version
}
packagingOptions {
resources {
excludes += '/META-INF/{AL2.0,LGPL2.1}'
}
}
}
dependencies {
implementation 'androidx.core:core-ktx:1.7.0'
implementation "androidx.compose.ui:ui:$compose_version"
implementation 'androidx.compose.material3:material3:1.0.0-alpha04'
implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.4.0'
implementation 'androidx.activity:activity-compose:1.4.0'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
//lifecycle
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0"
implementation "androidx.lifecycle:lifecycle-viewmodel-compose:2.4.0"
//Hilt
implementation "com.google.dagger:hilt-android:$hilt_version"
kapt "com.google.dagger:hilt-compiler:$hilt_version"
implementation "androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha03"
kapt "androidx.hilt:hilt-compiler:1.0.0"
//Coroutines
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.0'
//DataStore
implementation "androidx.datastore:datastore-preferences:1.0.0"
//Desugaring
coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
//Compose Destinations
implementation "io.github.raamcosta.compose-destinations:core:1.2.1-beta"
ksp "io.github.raamcosta.compose-destinations:ksp:1.2.1-beta"
build.gradle(Project)
buildscript {
ext {
compose_version = '1.2.0-alpha02'
hilt_version = "2.40.5"
}
dependencies {
classpath "com.google.dagger:hilt-android-gradle-plugin:$hilt_version"
}
}// Top-level build file where you can add configuration options common to all sub-projects/modules.
plugins {
id 'com.android.application' version '7.2.0-beta01' apply false
id 'com.android.library' version '7.2.0-beta01' apply false
id 'org.jetbrains.kotlin.android' version '1.6.10' apply false
id 'org.jetbrains.kotlin.jvm' version '1.6.10' apply false
}
task clean(type: Delete) {
delete rootProject.buildDir
}
MainViewModel.kt
#HiltViewModel
class MainViewModel #Inject constructor(
private val dataStoreRepository: DataStoreRepository
) : ViewModel() {...}
MainActivity.kt
#AndroidEntryPoint
class MainActivity : ComponentActivity() {
private val mainViewModel: MainViewModel by viewModels()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
DestinationsNavHost(navGraph = NavGraphs.root)
}
}
}

Did you create module class? like below:
#Module
#InstallIn(SingletonComponent::class)
class RepositoryModule {
#Provides
#Singleton
fun provideDataStoreRepository(): DataStoreRepository = DataStoreRepository()
}

Build failed after adding Hilt components in Android project

I was trying to explore Hilt with simplest possible example, but my application isn't building. I added all the dependencies but when I try to build, it shows an error indicating not finding the hilt gradle plugin.
Here are my codes:
build.gradle(project)
ext.kotlin_version = "1.5.20"
ext.hilt_version = '2.35'
repositories {
google()
mavenCentral()
}
dependencies {
classpath "com.android.tools.build:gradle:4.2.1"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath "com.google.dagger:hilt-android-gradle-plugin:$hilt_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
mavenCentral()
jcenter() // Warning: this repository is going to shut down soon
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle(app)
plugins{
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-kapt'
id 'dagger.hilt.android.plugin'
}
android {
compileSdkVersion 30
buildToolsVersion "30.0.3"
defaultConfig {
applicationId "com.bonny.tutorial.hilttest"
minSdkVersion 23
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'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
implementation 'androidx.core:core-ktx:1.5.0'
implementation 'androidx.appcompat:appcompat:1.3.0'
implementation 'com.google.android.material:material:1.3.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
testImplementation 'junit:junit:4.+'
//hilt
implementation "com.google.dagger:hilt-android:$hilt_version"
kapt "com.google.dagger:hilt-android-compiler:$hilt_version"
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}
Application Class (included in the Manifest too)
import android.app.Application
import dagger.hilt.android.HiltAndroidApp
#HiltAndroidApp
class TextApplication : Application() {
}
Dependency class (MyTexts.kt)
class MyTexts #Inject constructor(){
val text = "Hello World"
}
MainActivity.kt
#AndroidEntryPoint
class MainActivity : AppCompatActivity() {
private lateinit var tv: TextView
#Inject lateinit var myTexts: MyTexts
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
tv = findViewById(R.id.myText)
tv.text = myTexts.text
}
}
and the error looks like this:
public final class MainActivity extends androidx.appcompat.app.AppCompatActivity {
^
Expected #AndroidEntryPoint to have a value. Did you forget to apply the Gradle Plugin? (dagger.hilt.android.plugin)
See https://dagger.dev/hilt/gradle-setup.html
[Hilt] Processing did not complete. See error above for details.
Please suggest.

Kotlin 1.5.20 just came out (24 jun 2021) so there seems to be some compatibility issue. You can bring down to ext.kotlin_version = "1.5.10" in your build.gradle(project)
Also, Update hilt to latest 2.37
project build
classpath "com.google.dagger:hilt-android-gradle-plugin:2.37"
app build:
//Dagger - Hilt
implementation "com.google.dagger:hilt-android:2.37"
kapt "com.google.dagger:hilt-android-compiler:2.37"

How to pass an enum in AIDL?

Im trying to pass enums using AIDL and it's wrapping a Parcelable but it's still failing to compile with the following error:
> Task :app:compileDebugAidl FAILED
ERROR: uk.ac.liverpool.altphone.service.Mode: couldn't find import for class uk.ac.liverpool.altphone.service.Mode
My files are as follows:
Project Level build.gradle:
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
ext.kotlin_version = "1.4.20"
repositories {
google()
jcenter()
}
dependencies {
classpath "com.android.tools.build:gradle:4.1.1"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
def nav_version = "2.3.3"
classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"
// 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
}
Module Level build.gradle:
plugins {
id 'com.android.application'
id "androidx.navigation.safeargs"
id 'kotlin-android'
id 'kotlin-kapt'
id 'kotlin-parcelize'
id "com.google.protobuf" version "0.8.12"
}
preBuild {
doFirst {
new ProcessBuilder("java", "$rootDir/scripts/Zipper.java")
.directory(new File("$rootDir"))
.start()
.waitFor()
}
}
android {
compileSdkVersion 29
buildToolsVersion "30.0.2"
defaultConfig {
applicationId "uk.ac.liverpool.altphone"
minSdkVersion 21
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
javaCompileOptions {
annotationProcessorOptions {
arguments += ["room.schemaLocation": "$projectDir/schemas".toString()]
}
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
buildFeatures {
viewBinding true
}
compileOptions {
coreLibraryDesugaringEnabled true
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
tasks.withType(JavaCompile) {
configure(options) {
options.debug = true
options.warnings = true
options.compilerArgs << '-Xlint:all' << '-parameters' << '-g:source,lines,vars'
}
}
}
dependencies {
implementation 'androidx.activity:activity-ktx:1.2.0-beta02'
implementation 'androidx.appcompat:appcompat:1.3.0-alpha02'
implementation 'androidx.constraintlayout:constraintlayout:2.1.0-alpha1'
implementation 'androidx.core:core-ktx:1.5.0-alpha05'
implementation 'androidx.datastore:datastore:1.0.0-alpha06'
implementation 'androidx.datastore:datastore-core:1.0.0-alpha06'
implementation 'androidx.fragment:fragment-ktx:1.3.0-beta02'
def nav_version = "2.3.3"
implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
implementation "androidx.navigation:navigation-ui-ktx:$nav_version"
implementation 'androidx.recyclerview:recyclerview:1.2.0-beta01'
def room_version = "2.3.0-alpha03"
implementation "androidx.room:room-runtime:$room_version"
kapt "androidx.room:room-compiler:$room_version"
implementation 'androidx.startup:startup-runtime:1.0.0'
implementation 'com.google.android.material:material:1.3.0-alpha04'
implementation "com.google.protobuf:protobuf-javalite:3.10.0"
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.1'
}
protobuf {
protoc {
artifact = "com.google.protobuf:protoc:3.10.0"
}
generateProtoTasks {
all().each { task ->
task.builtins {
java {
option 'lite'
}
}
}
}
}
AIDL File app/src/main/aidl/uk/ac/liverpool/altphone/service/IAltPhoneServiceInterface.aidl:
// IAltPhoneServiceInterface.aidl
package uk.ac.liverpool.altphone.service;
// Declare any non-default types here with import statements
import uk.ac.liverpool.altphone.service.Mode;
interface IAltPhoneServiceInterface {
oneway void setMode(in Mode mode);
oneway void updateSettings(in Mode mode, in int headphone);
oneway void stop();
}
Kotlin File app/src/main/java/uk/ac/liverpool/altphone/service/AltPhoneService.kt:
package uk.ac.liverpool.altphone.service
import android.app.Service
import android.content.Intent
import android.os.IBinder
import android.os.Parcelable
import kotlinx.parcelize.Parcelize
import uk.ac.liverpool.altphone.R
class AltPhoneService : Service() {
override fun onBind(intent: Intent): IBinder {
return null!!
}
}
#Parcelize
public enum class Mode : Parcelable {
SINGLE, ALTERNATE;
companion object {
fun getModeByID(id: Int): Mode? = when (id) {
R.id.single_mode_mi -> SINGLE
R.id.alternate_mode_mi -> ALTERNATE
else -> null
}
}
}

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