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Got this error when tried a code using dagger hilt, Error:[Hilt] java.lang.reflect.InvocationTargetException (no error message)

I tried a code to make a currency converter in native Android using an API. I have used Retrofit, Dagger-Hilt and the MVVM architectural design pattern. After doing all the coding ,this is the error I got. The API fetches live currency exchange rates,which were converted from json to kotlin and used.
Gradle file
This is my gradle file with all the dependencies added.
plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-kapt'
id 'dagger.hilt.android.plugin'
}
android {
compileSdkVersion 29
defaultConfig {
applicationId "com.example.currency"
minSdkVersion 23
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
shrinkResources true
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = JavaVersion.VERSION_1_8.toString()
}
buildFeatures{
viewBinding true
dataBinding true
}
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
implementation 'androidx.core:core-ktx:1.3.2'
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'com.google.android.material:material:1.3.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'androidx.appcompat:appcompat:1.3.0-beta01'
implementation 'androidx.appcompat:appcompat:1.3.0-beta01'
implementation 'androidx.navigation:navigation-fragment-ktx:2.3.4'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
implementation 'androidx.recyclerview:recyclerview:1.1.0'
//dagger - hilt
implementation "com.google.dagger:hilt-android:2.31-alpha"
kapt "com.google.dagger:hilt-android-compiler:2.28-alpha"
implementation "androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha03"
kapt "androidx.hilt:hilt-compiler:1.0.0-beta01"
//Activity KTX for viewModels()
implementation "androidx.activity:activity-ktx:1.2.1"
//Architectural components
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.0"
//Lifecycle
implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"
implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.3.0"
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.3.0"
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.3.0"
//Retrofit
implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
implementation 'com.squareup.okhttp3:okhttp:4.9.0'
//Coroutines
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.2'
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.1'
//Coroutines Lifecycle Scopes
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.0"
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.3.0"
}

like i mentioned in the comments and my github PR. The solution is to use the same version of hilt-android, compiler

I used hilt version 2.33-beta and same version of hilt-android,compiler,but I have encountered the same problem.Then I change the hilt version to 2.3.5 refering to Google codelab,everything is worked because I find that version is incompatible the kotlin version 1.5 or higher.

kotlin Corountines and live data integrations error in find class kotlin.coroutines.Continuation<? super androidx.lifecycle.LiveData<

I am facing live data and coroutines problems in my project. I am getting following error
kotlin.coroutines.Continuation> p1) {
^
symbol: class BookJson
location: class BookClientHelper
I have added co-routines in my project recently. I am getting above error. I have kapt,ktx and coroutines dependency in my gradle.
My project build gradle looks like this
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "com.mine.bookkeeper"
minSdkVersion 22
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
javaCompileOptions {
annotationProcessorOptions {
arguments = [
"room.schemaLocation":"$projectDir/schemas".toString(),
"room.incremental":"true",
"room.expandProjection":"true"]
}
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.core:core-ktx:1.2.0'
implementation 'androidx.annotation:annotation:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.android.material:material:1.0.0'
testImplementation 'junit:junit:4.13'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
def room_version = "2.2.3"
implementation "androidx.room:room-runtime:$room_version"
kapt "androidx.room:room-compiler:$room_version"
implementation "androidx.room:room-ktx:$room_version"
implementation "androidx.room:room-coroutines:2.1.0-alpha04"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0"
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.2.0"
implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.2.0"
// optional - RxJava support for Room
implementation "androidx.room:room-rxjava2:$room_version"
implementation 'com.intuit.sdp:sdp-android:1.0.6'
implementation 'com.github.bumptech.glide:glide:4.11.0'
kapt 'com.github.bumptech.glide:compiler:4.11.0'
implementation 'com.google.code.gson:gson:2.8.6'
implementation 'com.squareup.retrofit2:retrofit:2.7.1'
implementation "com.squareup.retrofit2:converter-gson:2.7.1"
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.3'
}
Why it is not able to find normal class file ?
is it dependency problem or gradle plugin problem ?
Little bit new to kotlin. A little description will help me to move ahead with these components
Thanks in advance

Getting error on using classes from kotlinx-coroutine-test

It seems like kotlinx-coroutines-test dependency is not working for me as I can't access members of the dependency like TestCoroutineDispatcher, setMain(), resetMain() etc. I was following this doc but can't access the members despite adding the gradle dependency. I tried rebuilding the project and invalidating the cache and restart but nothing seems to work. I have also tried doing androidExtensions {experimental = true} but still no luck.
build.gradle
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.android.kotlincoroutines"
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
androidExtensions {
experimental = true
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.1.1'
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.1'
implementation 'androidx.appcompat:appcompat:1.1.0-alpha02'
implementation 'com.google.android.material:material:1.1.0-alpha03'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
// ViewModel and LiveData
def lifecycle_version = '2.0.0-beta01'
implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.1.0-alpha02"
testImplementation "androidx.arch.core:core-testing:$lifecycle_version"
// Room for database
def room_version = '2.0.0'
implementation "androidx.room:room-runtime:$room_version"
kapt "androidx.room:room-compiler:$room_version"
def work_version = "1.0.0-rc01"
implementation "android.arch.work:work-runtime:$work_version"
androidTestImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.1.1'
androidTestImplementation 'androidx.test:rules:1.1.1'
androidTestImplementation "com.google.truth:truth:0.42"
androidTestImplementation "androidx.arch.core:core-testing:$lifecycle_version"
testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.3.0-M1'
}
Where am I going wrong here?

replacing testImplementation with implementation did the trick for me.

Change your library version to 1.3.2 instead of 1.3.0-M1 like so:
testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.3.2'
And be sure that your tests are unit test in the test folder, not instrumented test in androidTest folder.

just add :-
testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.1.0")
Source :- Here yigit have given solution link and ssems like working .

Try adding core as a dependency on your test. It solved the problem for me.
testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.1.0")

The solution from #Squti worked for me, namely moving the class trying to import the TestCoroutineDispatcher from a package in the src directory to a package in the test directory.

Unresolved reference ActivityTestRule for AndroidX

I'm trying to test my UI via instrumentation test, with androidX espresso library.
In my grade I have:
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: "kotlin-kapt"
android {
compileSdkVersion 28
defaultConfig {
applicationId "it.zehus.mybike"
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
android.defaultConfig.manifestPlaceholders = ['appAuthRedirectScheme': 'net.openid.appauthdemo']
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
def lifecycle_version = "2.0.0"
// ViewModel and LiveData
implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
// room persistence library
def room_version = "2.1.0-alpha04"
implementation "androidx.room:room-runtime:$room_version"
kapt "androidx.room:room-compiler:$room_version" // use kapt for Kotlin
// optional - Coroutines support for Room
implementation "androidx.room:room-coroutines:$room_version"
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.android.material:material:1.0.0'
// Espresso
androidTestImplementation 'androidx.test:runner:1.1.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
implementation project(path: ':remotemanager')
implementation "org.jetbrains.kotlin:kotlin-reflect:1.3.21"
androidTestImplementation 'androidx.test.ext:junit:1.1.0'
// required if you want to use Mockito for unit tests
testImplementation 'org.mockito:mockito-core:2.24.5'
// required if you want to use Mockito for Android tests
androidTestImplementation 'org.mockito:mockito-android:2.24.5'
// Bluetooth sdk
implementation project(path: ':bluetoothmanager')
// Custom views
implementation project(path: ':customviews')
}
As specified in the documentation I'm attempting to import ActivityTestRule class in my test, however the reference is unresolved.
import androidx.test.filters.LargeTest
import androidx.test.runner.AndroidJUnit4
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
// unresolved reference here
import androidx.test.rule.ActivityTestRule
import it.zehus.mybike.ui.ride.RideActivity
/**
* Instrumented test, which will execute on an Android device.
*
* See [testing documentation](http://d.android.com/tools/testing).
*/
// deprecated here
#RunWith(AndroidJUnit4::class)
#LargeTest
class FragmentDashboardUiTest {
#get:Rule // unresolved reference here
val activityRule = ActivityTestRule(RideActivity::class.java)
#Test
fun myClassMethod_ReturnsTrue() { }
}
Am I doing something wrong or there's a problem within AndroidX testing libraries?

I found out from this documentation page that class ActivityTestRule stays under androidx.test.rule in AndroidX. In order to import the package, I simply added:
androidTestImplementation 'androidx.test:rules:1.2.0'
to my gradle.
To sum up my gradle now contains:
// Espresso
// Core library
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
// AndroidJUnitRunner and JUnit Rules
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test:rules:1.2.0'

The class is under package: androidx.test.ext.junit.rules;
So obviously the most important dependency is:
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
I am wondering why the other answer is uplifted so much,
but it doesn't work for me at all.
Hope this helps others like me.

Cannot find symbol ViewModel with Dagger 2

I'm creating a new Android project and I adding Dagger 2, but it fails with an error related to androidx libraries.
After using a template from within Android Studio, I've added a few lines, kotlin-kapt, and the dependencies for Dagger 2.
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.xxxx.yyyy"
minSdkVersion 16
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
androidExtensions {
experimental = true
}
kapt {
generateStubs = true
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.0.0-alpha1'
implementation 'androidx.constraintlayout:constraintlayout:1.1.0'
implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0-alpha1'
implementation 'com.google.android.material:material:1.0.0-alpha1'
// Image Loading
implementation 'com.github.bumptech.glide:glide:4.6.1'
annotationProcessor 'com.github.bumptech.glide:compiler:4.6.1'
// Dagger
implementation 'com.google.dagger:dagger-android:2.15'
kapt 'com.google.dagger:dagger-android-processor:2.15'
// RxJava
implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
implementation 'io.reactivex.rxjava2:rxjava:2.1.3'
// Retrofit
implementation 'com.squareup.retrofit2:retrofit:2.3.0'
implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.2.0'
implementation 'com.squareup.okhttp3:okhttp:3.10.0'
implementation 'com.squareup.okhttp3:logging-interceptor:3.9.0'
// Navigation
implementation 'android.arch.navigation:navigation-fragment-ktx:1.0.0-alpha01'
implementation 'android.arch.navigation:navigation-ui-ktx:1.0.0-alpha01'
// Pretty Logger
implementation 'com.orhanobut:logger:1.15'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.1.0-alpha1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha1'
}
When trying to build the application, it fails with the following errors.
error: cannot find symbol
public final class MainActivityViewModel extends android.arch.lifecycle.ViewModel {
^
symbol: class ViewModel
location: package android.arch.lifecycle
error: cannot find symbol
private final androidx.lifecycle.MediatorLiveData
^
symbol: class MediatorLiveData
location: package androidx.lifecycle
error: cannot find symbol
private androidx.navigation.NavController navController;
^
symbol: class NavController
location: package androidx.navigation
...
I've tried with androidx libraries, and the older libraries but both fail. If I removed the Dagger 2 dependencies it will build and run fine.
I'm currently using Android Studio 3.2 Canary 17.
Any idea what's going wrong?
Thanks.

Go to Settings -> Build, Execution, Deployment -> Compiler,
uncheck the 'Configure on demand' option if set.
Also make sure you are using latest gradle and Android Gradle plugin

I managed to track down the cause of the issue, it wasn't related to the build.gradle itself but the version of Java I was using.
Within Android Studios I have changed the JDK to use Java 10.
However, changing this setting back to using the embedded JDK has made the application compile successful.