The APK is generated and everything works at compile time but app crash at runtime. The crash is when launching the camera module for barcode scanning implemented with CameraX.
Here is the crash log:
08-22 17:31:16.537 16660-16660/com.xxx.xxx E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.xxx.xxx, PID: 16660
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/xxx/xxx/viewmodels/CameraXViewModel;
at com.xxx.xxx.barcode.CameraXLivePreviewActivity.onCreate(CameraXLivePreviewActivity.kt:94)
at android.app.Activity.performCreate(Activity.java:7314)
at android.app.Activity.performCreate(Activity.java:7305)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1215)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2948)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3073)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1774)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:198)
at android.app.ActivityThread.main(ActivityThread.java:7055)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:523)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:836)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.xxx.xxx.viewmodels.CameraXViewModel" on path: DexPathList[[zip file "/data/app/com.xxx.xxx-LKiFwx0pU2KUfueyYsAm-w==/base.apk"],nativeLibraryDirectories=[/data/app/com.xxx.xxx-LKiFwx0pU2KUfueyYsAm-w==/lib/arm64, /data/app/com.xxx.xxx-LKiFwx0pU2KUfueyYsAm-w==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
Here is line 94 where the ViewModel is accessed.
Kindly refer my build details.
Here is the project-level build.gradle
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.google.gms:google-services:4.3.10'
classpath 'com.android.tools.build:gradle:7.1.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.10"
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle(:app)
plugins {
id 'com.android.application'
id 'org.jetbrains.kotlin.android'
id 'com.google.gms.google-services'
id 'kotlin-android'
id 'kotlin-android-extensions'
id 'kotlin-kapt'
}
android {
compileSdk 31
defaultConfig {
applicationId "com.xxx.xxx"
minSdk 21
targetSdk 31
versionCode 19
versionName "1.2.13"
multiDexEnabled true
signingConfig signingConfigs.config
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
debug {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.config
buildConfigField "String", "AREA", "\"\""
}
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.config
buildConfigField "String", "AREA", "\"\""
}
ABC {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.config
buildConfigField "String", "AREA", "\"_A\""
}
XYZ {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.config
buildConfigField "String", "AREA", "\"_X\""
}
}
flavorDimensions "appVariant", "projectCode"
productFlavors {
A {
dimension "appVariant"
}
B {
dimension "appVariant"
}
C {
dimension "appVariant"
}
D {
dimension "appVariant"
}
DEV {
dimension "projectCode"
}
QA {
dimension "projectCode"
}
LIVE {
dimension "projectCode"
}
DEMO {
dimension "projectCode"
}
BETA {
dimension "projectCode"
}
}
applicationVariants.all { variant ->
variant.outputs.all { output ->
def project = "TEST_PROJECT"
def SEP = "_"
def flavor = variant.productFlavors[0].name
def projcode = variant.productFlavors[1].name
def buildType = variant.buildType.name
def buildTypeName = "";
switch (buildType) {
case "ABC": buildTypeName = SEP "AB"; break;
case "XYZ": buildTypeName = SEP "XY"; break;
default:
buildTypeName = "";
}
def version = variant.versionName
def date = new Date();
def formattedDate = date.format('ddMMyy_HHmm')
def newApkName = project buildTypeName SEP flavor SEP projcode SEP version ".apk"
outputFileName = new File(newApkName)
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
buildFeatures {
dataBinding true
}
}
dependencies {
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.constraintlayout:constraintlayout:2.1.0'
implementation 'androidx.databinding:databinding-runtime:7.0.2'
implementation 'com.google.android.gms:play-services-location:18.0.0'
implementation 'com.google.firebase:firebase-messaging-ktx:22.0.0'
implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.2'
implementation 'androidx.camera:camera-core:1.0.2'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
//Retrofit and GSON
implementation 'com.squareup.retrofit2:retrofit:2.6.0'
implementation 'com.squareup.retrofit2:converter-gson:2.6.0'
implementation 'com.squareup.retrofit2:adapter-rxjava:2.5.0'
implementation 'com.squareup.okhttp3:logging-interceptor:4.2.1'
implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2'
//Kotlin Coroutines
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.0"
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.0"
// ViewModel and LiveData
implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"
//Kodein Dependency Injection
implementation "org.kodein.di:kodein-di-generic-jvm:6.2.1"
implementation "org.kodein.di:kodein-di-framework-android-x:6.2.1"
//Android Room
implementation "androidx.room:room-runtime:2.2.5"
implementation "androidx.room:room-ktx:2.2.5"
kapt "androidx.room:room-compiler:2.2.5"
//Android Navigation Architecture
implementation "androidx.navigation:navigation-fragment-ktx:2.2.0-alpha02"
implementation "androidx.navigation:navigation-ui-ktx:2.2.0-alpha02"
implementation 'com.xwray:groupie:2.8.0'
implementation 'com.xwray:groupie-kotlin-android-extensions:2.8.0'
implementation 'com.xwray:groupie-databinding:2.8.0'
implementation "androidx.preference:preference-ktx:1.1.0"
//Image loading
implementation "com.squareup.picasso:picasso:2.71828"
//barcode
implementation 'com.google.mlkit:barcode-scanning:17.0.0'
// CameraX
implementation "androidx.camera:camera-camera2:1.0.0-SNAPSHOT"
implementation "androidx.camera:camera-lifecycle:1.0.0-SNAPSHOT"
implementation "androidx.camera:camera-view:1.0.0-SNAPSHOT"
// On Device Machine Learnings
implementation "com.google.android.odml:image:1.0.0-beta1"
implementation 'com.google.mlkit:camera:16.0.0-beta1'
implementation 'me.dm7.barcodescanner:zxing:1.9.13'
implementation(files("./libs/scandecode-release.aar"))
implementation 'com.valdesekamdem.library:md-toast:0.9.0'
implementation 'com.tt:whorlviewlibrary:1.0.3'
}
Not sure what is wrong. Any help will be appreciated.
CodePudding user response：
Solved!.
Implemented multidex from the developer site.
https://developer.android.com/studio/build/multidex
Also there were two view model classes CameraXViewModel & CameraXviewModel.kt, removed the file CameraXviewModel.kt from the project. CameraXViewModel is the one which is used and CameraXviewModel was not referenced any where in the project.
ASFAIK Java and Kotlin is case sensitive for classes, so ideally it should work. Here everything compiled and APK generated but app crashed at runtime. Hope this helps someone.