I am trying Dagger 2 for the first time using tutorial. When I start application on some stage there appears an error I can't resolve:
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)
The code is extremely simple but I have no idea what is wrong there. There is MainActivity class with default code and some additional classes
MainActivity.kt:
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
}
AppComponent.kt:
import dagger.Component
import dagger.Module
import dagger.Provides
#Component(modules = [AppModule::class])
interface AppComponent {
fun computer(): Computer
}
#Module
object AppModule {
#Provides
fun provideComputer(
processor: Processor, ram: RAM, motherboard: Motherboard
): Computer {
return Computer(processor, ram, motherboard)
}
#Provides
fun provideProcessor() = Processor()
#Provides
fun provideRam(): RAM = RAM()
#Provides
fun provideMotherboard(): Motherboard = Motherboard()
}
Computer.kt file with other small classes:
import javax.inject.Inject
data class Computer #Inject constructor(
val processor: Processor,
val ram: RAM,
val motherboard: Motherboard
)
class Processor #Inject constructor() {
override fun toString() = "AB2022"
}
class RAM #Inject constructor() {
override fun toString() = "16GB"
}
class Motherboard #Inject constructor() {
override fun toString() = "X7 3000"
}
App gradle dependencies:
plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-kapt'
}
android {
compileSdk 31
defaultConfig {
applicationId "com.example.daggertutorial"
minSdk 21
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'
}
buildFeatures {
viewBinding true
}
}
dependencies {
implementation 'com.google.dagger:dagger:2.36'
kapt 'com.google.dagger:dagger-compiler:2.36'
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'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}
code on github: https://github.com/faritowich/DaggerTutorial
Related
I'm new learning Kotlin and I'm developing a Notes app to practise with databases and viewModels.
I'm having trouble generating my database and the app crashes when it should generate the database and shows me this error on the logcat:
"java.lang.RuntimeException: cannot find implementation for com.example.blocnotas.database.AppDatabase. AppDatabase_Impl does not exist"
This is how I made my Database class:
package com.example.blocnotas.database
import android.content.Context
import androidx.room.Database
import androidx.room.Room
import androidx.room.RoomDatabase
#Database(entities = [Notes::class], version = 1, exportSchema = false)
abstract class AppDatabase: RoomDatabase() {
abstract fun noteDao(): NoteDao
companion object {
#Volatile
private var INSTANCE: AppDatabase? = null
fun getDatabase(context: Context): AppDatabase {
return INSTANCE ?: synchronized(this) {
val instance = Room.databaseBuilder(
context.applicationContext,
AppDatabase::class.java,
"app_notes_database")
.build()
INSTANCE = instance
return instance
}
}
}
My Application class:
package com.example.blocnotas
import android.app.Application
import com.example.blocnotas.database.AppDatabase
class NotesApplication : Application() {
val database: AppDatabase by lazy { AppDatabase.getDatabase(this) }
}
My app gradle:
plugins {
id 'com.android.application'
id 'org.jetbrains.kotlin.android'
id 'kotlin-kapt'
//id 'androidx.navigation.safeargs.kotlin'
}
android {
namespace 'com.example.blocnotas'
compileSdk 32
defaultConfig {
applicationId "com.example.blocnotas"
minSdk 19
targetSdk 32
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 {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
buildFeatures {
viewBinding true
}
}
dependencies {
implementation 'androidx.core:core-ktx:1.7.0'
implementation 'androidx.appcompat:appcompat:1.5.1'
implementation 'com.google.android.material:material:1.6.1'
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
implementation 'androidx.navigation:navigation-fragment-ktx:2.5.2'
implementation 'androidx.navigation:navigation-ui-ktx:2.5.2'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1'
implementation "androidx.room:room-runtime:$room_version"
annotationProcessor "androidx.room:room-compiler:$room_version"
// optional - Kotlin Extensions and Coroutines support for Room
implementation "androidx.room:room-ktx:$room_version"
}
Does anybody know how can i fix it and generate my database table?
I leave you the gitHub repository where i'm making it so if it can help get any extra necessary information: https://github.com/R3inbow/BlocNotasApp.git
I finally solved it changing in the gradle the "kapt" for "ksp" this way:
In dependencies:
ksp "androidx.room:room-compiler:$room_version"
In plugins:
id 'com.google.devtools.ksp' version '1.7.20-1.0.6'
I am trying to create MVVM app using Openweathermap API and hilt. I tried to inject my repository into my viewmodel primary constractor and creating a ViewModelFactory class, in order to pass the parameters from viewmodel class to my main activity class it did not work with 'by viewmodels()' itself. Sadly it did not work and I am getting the following message "has no zero argument constructor". It worth to mention that I also tried to inject the repository into my secondary constractor.
This is my MainActivity
#AndroidEntryPoint
class MainActivity
#Inject constructor(var repository:WeatherRepositoryInterface) : AppCompatActivity() {
private lateinit var binding: ActivityMainBinding
private lateinit var previewAdapter: PreviewAdapter
lateinit var viewModel:WeatherViewModel
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
initViewItems()
}
fun initViewItems() {
viewModel= ViewModelProvider(this#MainActivity,FactoryViewModel(application,repository))[WeatherViewModel::class.java]
binding.recyclerview.apply {
layoutManager = LinearLayoutManager(this#MainActivity)
previewAdapter = PreviewAdapter(viewModel.loadCities().value!!)
previewAdapter.let {
it.setOnItemClickListener(object: OnClickInterface{
override fun onClickItem(position: Int) {
var intent=Intent(this#MainActivity,DetailActivity::class.java)
intent.putExtra("name",viewModel.loadCities().value!![position].cityName)
intent.putExtra("img",viewModel.loadCities().value!![position].cityImg)
startActivity(intent)
}
})
}
adapter = previewAdapter
}
}
}
My ViewModel class
#HiltViewModel
class WeatherViewModel #Inject constructor(application: Application, var repository: WeatherRepositoryInterface)
: AndroidViewModel(application) ,LifecycleObserver{
companion object{
private val VIEWMODEL_STRING="WeatherViewModel.class"
}
private var list: MutableLiveData<List<Preview>> = MutableLiveData()
fun getCityInfo(q:String) =
liveData(Dispatchers.IO){
emit(com.example.yourweatherapp.Resources.Resource.loading(data = null))
try {
emit(com.example.yourweatherapp.Resources.Resource.success(data = repository.getWeather(q=q)))
} catch (e: Exception) {
emit(e.message?.let { com.example.yourweatherapp.Resources.Resource.error(data = null, message = it) })
e.message?.let { Log.e(VIEWMODEL_STRING, it) }
}
}
fun loadCities():MutableLiveData<List<Preview>>{
list.value= listOf(
Preview(
CityList.santorini,
CityList.santoriniImg),
Preview(CityList.bern,
CityList.bernImg),
Preview(CityList.venice,
CityList.veniceImg),
Preview("",CityList.myLocationImg)
)
return list
}
}
My ViewModelFactory class:
class FactoryViewModel(
var application:Application,
var repository: WeatherRepositoryInterface
): ViewModelProvider.NewInstanceFactory() {
override fun <T : ViewModel> create(modelClass: Class<T>): T =
WeatherViewModel(application,repository) as T
}
My Gradle dependency file:
plugins {
id 'com.android.application'
id 'org.jetbrains.kotlin.android'
id 'kotlin-kapt'
}
android {
compileSdk 31
defaultConfig {
applicationId "com.example.yourweatherapp"
minSdk 21
targetSdk 31
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildFeatures {
dataBinding = true
viewBinding = true
}
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:1.4.0'
implementation 'com.google.android.material:material:1.4.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.2'
implementation 'androidx.navigation:navigation-fragment-ktx:2.4.0'
implementation 'androidx.navigation:navigation-ui-ktx:2.4.0'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation "com.squareup.retrofit2:converter-gson:2.9.0"
implementation "com.squareup.retrofit2:retrofit:2.9.0"
implementation("androidx.cardview:cardview:1.0.0")
implementation 'com.github.bumptech.glide:glide:4.12.0'
implementation("androidx.cardview:cardview:1.0.0")
implementation("androidx.recyclerview:recyclerview:1.2.1")
// implementation ("androidx.lifecycle:lifecycle-livedata:2.5.0-alpha01")
//http3
implementation(platform("com.squareup.okhttp3:okhttp-bom:4.9.3"))
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.5.0-alpha01"
implementation "androidx.activity:activity-ktx:1.1.0"
implementation("com.squareup.okhttp3:okhttp")
implementation("com.squareup.okhttp3:logging-interceptor")
//lifecycle
implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.4.0"
implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0")
implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.4.0")
kapt("androidx.lifecycle:lifecycle-compiler:2.5.0-alpha01")
implementation("androidx.lifecycle:lifecycle-common-java8:2.5.0-alpha01")
implementation("androidx.lifecycle:lifecycle-service:2.5.0-alpha01")
//fragment
implementation("androidx.fragment:fragment-ktx:1.4.1")
implementation("androidx.navigation:navigation-fragment-ktx:2.4.1")
implementation("androidx.navigation:navigation-ui-ktx:2.4.1")
//hilt dagger
implementation("com.google.dagger:hilt-android:2.38.1")
kapt("com.google.dagger:hilt-android-compiler:2.38.1")
//implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.2"
implementation 'androidx.hilt:hilt-navigation-compose:1.0.0'
implementation 'androidx.hilt:hilt-navigation-compose:1.0.0'
implementation 'androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha03'
kapt 'androidx.hilt:hilt-compiler:1.0.0'
}
kapt {
javacOptions {
// These options are normally set automatically via the Hilt Gradle plugin, but we
// set them manually to workaround a bug in the Kotlin 1.5.20
option("-Adagger.fastInit=ENABLED")
option("-Adagger.hilt.android.internal.disableAndroidSuperclassValidation=true")
}
}
Just remove this line from your dependencies:
implementation 'androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha03'
I found this in migrations doc and solved the issue for my case:
Remove this line from gradle:
implementation 'androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha03'
I'm using latest versions of all dependencies, make sure to check and apply all related and necessary migrations
The project run with no error on my MacBook intel chip but it gave me E/AndroidRuntime: FATAL EXCEPTION: main on M1 chip I can't find where the problem is.
I suppose there is no error in my code because is already run on other devices and just facing different errors while trying to run it on M1.
the error message:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.memeorshower, PID: 10861
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.memeorshower/com.example.memeorshower.MainActivity}: java.lang.RuntimeException: Cannot create an instance of class com.example.memeorshower.viewmodel.ImageTmpViewModel
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Thanks in advance
here is my mainActivity code
package com.example.memeorshower
import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.lifecycle.ViewModelProvider
import com.example.memeorshower.database.texttmp.TextTmp
import com.example.memeorshower.databinding.ActivityMainBinding
import com.example.memeorshower.viewmodel.ImageTmpViewModel
import com.example.memeorshower.viewmodel.TextTmpViewModel
class MainActivity : AppCompatActivity() {
lateinit var binding: ActivityMainBinding
lateinit var myImageTmpViewModel: ImageTmpViewModel
lateinit var myTextTmpViewModel: TextTmpViewModel
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
myImageTmpViewModel = ViewModelProvider(this).get(ImageTmpViewModel::class.java)
myTextTmpViewModel = ViewModelProvider(this).get(TextTmpViewModel::class.java)
// todo: you have access to both view models, load your data in them.
binding.NewButton.setOnClickListener { makeNewMeme() }
binding.MyProjectButton.setOnClickListener { showMyProjects() }
binding.DatabaseButton.setOnClickListener { showDatabase() }
}
private fun showDatabase() {
val intent = Intent(this, MemeDatabaseActivity::class.java)
startActivity(intent)
}
private fun showMyProjects() {
val intent = Intent(this, MyProjectsActivity::class.java)
startActivity(intent)
}
private fun makeNewMeme() {
val intent = Intent(this, TextTemplateActivity::class.java)
startActivity(intent)
}
}
build.gradle in app folder:
plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-kapt'
}
android {
compileSdkVersion 30
defaultConfig {
applicationId "com.example.memeorshower"
minSdkVersion 14
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'
}
buildFeatures {
viewBinding true
}
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
// implementation 'androidx.core:core-ktx:1.7.0'
implementation 'androidx.appcompat:appcompat:1.3.1'
implementation 'com.google.android.material:material:1.4.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
implementation 'androidx.recyclerview:recyclerview:1.2.1'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
// Navigation Component
implementation 'androidx.navigation:navigation-fragment-ktx:2.2.2'
implementation 'androidx.navigation:navigation-ui-ktx:2.2.2'
// Room components
implementation "androidx.room:room-runtime:2.2.5"
annotationProcessor "androidx.room:room-compiler:2.2.5"
implementation "androidx.room:room-ktx:2.2.5"
androidTestImplementation "androidx.room:room-testing:2.2.5"
// Lifecycle components
implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"
implementation "androidx.lifecycle:lifecycle-common-java8:2.2.0"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0"
// Kotlin components
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.72"
api "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5"
api "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.5"
implementation 'com.burhanrashid52:photoeditor:1.5.1'
}
build.gradle:
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
ext.kotlin_version = "1.4.10"
ext.room_version = '2.2.5'
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:7.0.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
mavenCentral()
jcenter() // Warning: this repository is going to shut down soon
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
ImageTmpViewModel class:
class ImageTmpViewModel(application: Application): AndroidViewModel(application) {
private val readAllData: List<ImageTmp>
private val imgDao = AppDatabase.getDatabase(application).imagetmpDao()
init {
readAllData = imgDao.getAll()
}
fun addImage(imgtmp: ImageTmp){
viewModelScope.launch(Dispatchers.IO) {
imgDao.addImage(imgtmp)
}
}
}
ImageTmpDao:
#Dao
interface ImageTmpDao {
#Insert(onConflict = OnConflictStrategy.REPLACE)
fun upsertByReplacement(image: List<ImageTmp>)
#Insert(onConflict = OnConflictStrategy.IGNORE)
suspend fun addImage(image: ImageTmp)
#Query("SELECT * FROM image_tmp_table ORDER BY id ASC")
fun getAll(): List<ImageTmp>
#Query("SELECT * FROM image_tmp_table WHERE id = :id ")
fun getByID(id: Int): ImageTmp
#Delete
fun delete(imgtmp: ImageTmp)
}
I'm getting a compilation error that I have described below. I have tried different solution provided on similar question like mine but neither of them worked for me.
Please help me with this.
The errors I'm getting:-
(1)
error: Type of the parameter must be a class annotated with #Entity or a collection/array of it.
kotlin.coroutines.Continuation<? super kotlin.Unit> continuation);
(2)
error: Not sure how to handle insert method's return type.
public abstract java.lang.Object addTransaction(#org.jetbrains.annotations.NotNull()
(3)
error: Not sure how to handle delete method's return type. Currently the supported
return types are void, int or Int.
public abstract java.lang.Object deleteTransaction(#org.jetbrains.annotations.NotNull()
(4)
error: Type of the parameter must be a class annotated with #Entity or a
collection/array of it.
kotlin.coroutines.Continuation<? super kotlin.Unit> continuation);
(5)
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)
This is a compilation error that I am getting while building:-
DAO class:
package com.tallileo.myapplication.TransactionDatabase
import androidx.lifecycle.LiveData
import androidx.room.*
#Dao
interface TransactionDao {
#Insert(onConflict = OnConflictStrategy.IGNORE)
suspend fun addTransaction(transaction:Transaction)
#Delete
suspend fun deleteTransaction(transaction:Transaction)
#Query("SELECT * FROM transactions ORDER BY id DESC")
fun getAllTransaction():LiveData<List<Transaction>>
}
Entity Class:
package com.tallileo.myapplication.TransactionDatabase
import androidx.room.Entity
import androidx.room.PrimaryKey
#Entity(tableName = "transactions")
data class Transaction(
val transactionType:String,
val amountType:String,
val name:String,
val amount:String,
val accountTo:String,
val accountFrom:String,
val categoryType:String,
val currency:String,
var additionalNote:String=""
) {
#PrimaryKey(autoGenerate = true)
var id:Int=0
}
Database Class:
package com.tallileo.myapplication.TransactionDatabase
import android.content.Context
import androidx.room.Database
import androidx.room.Room
import androidx.room.RoomDatabase
#Database(entities = [Transaction::class], version = 1, exportSchema = true)
abstract class TransactionDatabase : RoomDatabase() {
abstract fun transactDao():TransactionDao
companion object {
// Singleton prevents multiple instances of database opening at the
// same time.
#Volatile
private var INSTANCE: TransactionDatabase? = null
fun getDatabase(context: Context): TransactionDatabase {
// if the INSTANCE is not null, then return it,
// if it is, then create the database
return INSTANCE ?: synchronized(this) {
val instance = Room.databaseBuilder(
context.applicationContext,
TransactionDatabase::class.java,
"TransactionDatabase"
).build()
INSTANCE = instance
// return instance
instance
}
}
}
}
build.gradle:
plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-kapt'
}
android {
compileSdk 31
defaultConfig {
applicationId "com.tallileo.myapplication"
minSdk 21
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'
}
buildFeatures {
viewBinding true
}
}
dependencies {
def roomVersion = "2.3.0"
implementation 'androidx.core:core-ktx:1.7.0'
implementation 'androidx.appcompat:appcompat:1.4.0'
implementation 'com.google.android.material:material:1.4.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.2'
implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.0'
implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0'
implementation 'androidx.navigation:navigation-fragment-ktx:2.3.5'
implementation 'androidx.navigation:navigation-ui-ktx:2.3.5'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
testImplementation 'junit:junit:'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
//Lottie Animation
implementation 'com.airbnb.android:lottie:3.4.0'
//room components
implementation("androidx.room:room-runtime:$roomVersion")
kapt("androidx.room:room-compiler:$roomVersion")
implementation 'androidx.room:room-common:2.3.0'
implementation("androidx.room:room-ktx:$roomVersion")
}
Kotlin version is 1.6.0. Also when I remove suspend from all the methods in the DAO, then there is no compilation error.
All of your room versions should be the same. You have expressly called out common differently than the rest. Why not let common just come in transitivley?
Had the same problem as well, updating my room_version from '2.3.0' to '2.4.0-beta02' fixed it!
I'm trying to call the await() function in the
bookList = bookViewModel.getBookList().await()
in the Main Activity but it gives the error in the header.
Main Activity
#AndroidEntryPoint
class MainActivity : ComponentActivity() {
private val bookViewModel: BookViewModel by viewModels()
private var bookList : BookList? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
GlobalScope.launch(Dispatchers.IO) {
bookList = bookViewModel.getBookList().await()
}
setContent {
LOTRAppTheme {
}
}
}
}
ViewModel
package com.example.lotrapp
import androidx.lifecycle.ViewModel
import com.example.lotrapp.models.BookList
import com.example.lotrapp.repository.BookRepository
import dagger.hilt.android.lifecycle.HiltViewModel
import javax.inject.Inject
#HiltViewModel
class BookViewModel #Inject constructor(
private val repository: BookRepository
) : ViewModel() {
suspend fun getBookList() : BookList? {
return repository.getBookList()
}
}
Repository
package com.example.lotrapp.repository
import com.example.lotrapp.models.BookList
import com.example.lotrapp.network.RetrofitApi
import javax.inject.Inject
class BookRepository #Inject constructor(
private val retrofitApi: RetrofitApi
) {
suspend fun getBookList() : BookList?
{
return retrofitApi.getBookList().body()
}
}
Api
package com.example.lotrapp.network
import com.example.lotrapp.models.BookList
import retrofit2.Response
import retrofit2.http.GET
interface RetrofitApi {
#GET("book")
suspend fun getBookList() : Response<BookList>
}
Gradle:
plugins {
id 'com.android.application'
id 'kotlin-android'
id("dagger.hilt.android.plugin")
id("kotlin-kapt")
}
android {
compileSdk 31
defaultConfig {
applicationId "com.example.lotrapp"
minSdk 21
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 {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
useIR = true
}
buildFeatures {
compose true
}
composeOptions {
kotlinCompilerExtensionVersion compose_version
kotlinCompilerVersion '1.5.10'
}
packagingOptions {
resources {
excludes += '/META-INF/{AL2.0,LGPL2.1}'
}
}
}
dependencies {
def compose_version = "1.0.2"
def lifecycle_version = "2.3.1"
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.compose.ui:ui:$compose_version"
implementation "androidx.compose.material:material:$compose_version"
implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
implementation "androidx.compose.runtime:runtime-livedata:$compose_version"
// ViewModel
implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version")
// LiveData
implementation("androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version")
// Lifecycles only (without ViewModel or LiveData)
implementation("androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version")
// Saved state module for ViewModel
implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")
// Annotation processor
kapt("androidx.lifecycle:lifecycle-compiler:$lifecycle_version")
// alternately - if using Java8, use the following instead of lifecycle-compiler
implementation("androidx.lifecycle:lifecycle-common-java8:$lifecycle_version")
implementation 'androidx.activity:activity-compose:1.3.1'
testImplementation 'junit:junit:4.+'
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"
//Retrofit
implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
//Hilt
implementation("com.google.dagger:hilt-android:2.38.1")
kapt("com.google.dagger:hilt-android-compiler:2.38.1")
//Coroutines
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.9")
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core-jvm:1.5.2")
}
kapt {
correctErrorTypes true
}
First I want to pull the list from the api and then show it in the UI with a Composable function (with LazyColumn) in setContent. It is enough to solve this error, but if you have better code suggestions, I would appreciate it. Thank you!
It doesn't really seem you need to invoke await() there. getBookList() returns BookList? directly, so just remove await() and it should be fine.
Additionally, you said you need to use this bookList in setContent. In that case you need to move setContent into launch block, below getBookList(). Right now setContent really executes before bookList is acquired. It is hard to provide more details without the full contents of setContent.