A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptExecution > java.lang.reflect.InvocationTargetException (no error message)

Android studio gave the error:

Execution failed for task ':app:kaptDebugKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptExecution
   > java.lang.reflect.InvocationTargetException (no error message)

I want to add in my project Kotlin Coroutines and use it with Room database. But after added all libraries I got this error. This is all information from the compiler.

I have identified, This is because of the annotation @Database. If I removed this annotation, the error don't appear, but Room is not working too.

My gradle file:

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
//apply plugin: 'androidx.navigation.safeargs'

kotlin {
    experimental {
        coroutines 'enable'
    }
}

android {
    compileSdkVersion 29
    defaultConfig {
        applicationId "com.bestcred.coursetthree"
        minSdkVersion 21
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        //vectorDrawables.useSupportLibrary = true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    // Enables data binding.
    buildFeatures {
        dataBinding true
    }
}

dependencies {


    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"

    // Support libraries
    implementation "androidx.appcompat:appcompat:1.2.0"
    implementation 'com.google.android.material:material:1.2.0'
    implementation "androidx.fragment:fragment:1.2.5"
    implementation "androidx.constraintlayout:constraintlayout:2.0.0"

    // Android KTX
    implementation 'androidx.core:core-ktx:1.3.1'

    // Room and Lifecycle dependencies
    implementation "androidx.room:room-runtime:$room_version"
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    kapt "android.arch.persistence.room:compiler:$room_version"

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

    // Coroutines
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutine_version"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutine_version"

}

kotlin_version = "1.4.0"
room_version = "2.2.5"
coroutine_version = '1.3.9'

I update Room version and add Kotlin Coroutines. What's problem?

Solution 1:

Android Studio's UI was just hiding the error...

when the error occurred, it highlighted the item in the list view, and showed an unhelpful message in the terminal view.

to find the real error, select the root item in the list view so that Android Studio would display the whole build output in the terminal view, then scroll to find error.

Solution 2:

I develop in Apple Silicon Macbook M1.

use room_version 2.2.4, fails in 2.2.5

def room_version = "2.2.4"

implementation "androidx.room:room-runtime:$room_version"
kapt "androidx.room:room-compiler:$room_version"
implementation "androidx.room:room-ktx:$room_version"
testImplementation "androidx.room:room-testing:$room_version"

Solution 3:

You need change:

kapt "android.arch.persistence.room:compiler:$room_version"

to

kapt "androidx.room:room-compiler:$room_version"

Solution 4:

This exception occurs when you have done some mistake on Room database or Doa or entity class for example I had done mistakes in the entity class

1. I had made the autogenerated field of Entity class val instead of var
2. I had put delete annotation on two functions with a different name but they were deleting the same data

so I would suggest to check the entity,dao or database class carefully if you imported the right dependency.

@Entity(tableName = "user_table")
data class User(
    val firstName: String,
    val lastName: String,
    val age: Int
) {
    @PrimaryKey(autoGenerate = true)
    var id: Int = 0 //**do not made it val**
}