Summary
I wanted to migrate an old app of mine into a new Android Studio, update the build tools and use AndroidX.
It even kinda worked. The app starts and even enters the main screen... but crashes shortly after.
What I have tried
I have already looked at the following questions: NoClassDefFoundError android/support/v4/animation/AnimatorCompatHelper
java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/core/app/ActivityManagerCompat
The solution to the first was already present in my gradle file and that of the second doesn't really fit.
I believe the problem to be in the multidex configuration since I use the dexcount gradle plugin to count the numbers of methods in my apk and it has slightly more methods than can be contained in a single dex file. I looked into the relevant documentation: https://developer.android.com/studio/build/multidex Multidex was already enabled but I set the min SDK version to 21 and added a multidex-config.txt. The txt contains:
Landroidx/core/animation/AnimatorCompatHelper
This did nothing to fix the error, though.
I also checked the imported library 'FlexibleAdapter' for any updates. The Version I use still uses the old support libraries. I wanted to avoid updating the lib since the migration to the new version looks like a greater task. I would prefer doing the migration after the app is working again.
So this is a portion of my gradle file:
android {
compileSdkVersion 28
defaultConfig {
applicationId "funnyName"
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "1.0"
multiDexEnabled true
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
vectorDrawables.useSupportLibrary = true
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
multiDexKeepProguard file('multidex-config.txt')
}
debug {
shrinkResources false
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
multiDexKeepProguard file('multidex-config.txt')
}
}
packagingOptions {
exclude('META-INF/notice.txt')
exclude('META-INF/NOTICE')
exclude('META-INF/license.txt')
exclude('META-INF/LICENSE')
exclude('META-INF/LICENSE.txt')
exclude('META-INF/NOTICE.txt')
exclude 'META-INF/ASL2.0'
}
lintOptions {
abortOnError false
}
configurations.all {
resolutionStrategy.eachDependency { DependencyResolveDetails details ->
def requested = details.requested
if (requested.group == 'com.android.support') {
if (!requested.name.startsWith("multidex")) {
details.useVersion '25.3.0'
}
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
final BUTTERKNIFE_VERSION = '10.1.0'
final ANDROID_PERMISSION_MANAGER_VERSION = '1.0.0'
final DAGGER_VERSION = '2.5'
final SUPPORT_LIBRARY_VERSION_LEGACY = '1.0.0'
final HAMCREST_VERSION = '1.3'
final MOCKITO_VERSION = '1.10.19'
final ESPRESSO_VERSION = '3.1.0-alpha4'
final UI_AUTOMATOR_VERSION = '2.1.2'
final JUNIT_VERSION = '4.12'
final RUNNER_VERSION = '1.1.0-alpha4'
final ROBOLECTRIC_VERSION = '3.2.2'
final MULTIDEX_VERSION = '2.0.0'
final MOCKSERVER_VERSION = '3.5.0'
final RETROFIT_VERSION = '2.5.0'
final RXANDROID_VERSION = '2.0.1'
final RXJAVA_VERSION = '2.0.4'
def daggerCompiler = "com.google.dagger:dagger-compiler:$DAGGER_VERSION"
implementation "com.jakewharton:butterknife:$BUTTERKNIFE_VERSION"
annotationProcessor "com.jakewharton:butterknife-compiler:$BUTTERKNIFE_VERSION"
implementation "com.github.buchandersenn:android-permission-manager:$ANDROID_PERMISSION_MANAGER_VERSION"
implementation "androidx.legacy:legacy-support-core-utils:$SUPPORT_LIBRARY_VERSION_LEGACY"
implementation "androidx.appcompat:appcompat:$SUPPORT_LIBRARY_VERSION_LEGACY"
implementation "com.google.android.material:material:$SUPPORT_LIBRARY_VERSION_LEGACY"
implementation "androidx.legacy:legacy-support-v13:$SUPPORT_LIBRARY_VERSION_LEGACY"
implementation "androidx.legacy:legacy-support-v4:$SUPPORT_LIBRARY_VERSION_LEGACY"
implementation "androidx.core:core:$SUPPORT_LIBRARY_VERSION_LEGACY"
implementation "androidx.recyclerview:recyclerview:$SUPPORT_LIBRARY_VERSION_LEGACY"
implementation "androidx.cardview:cardview:$SUPPORT_LIBRARY_VERSION_LEGACY"
androidTestImplementation "androidx.appcompat:appcompat:$SUPPORT_LIBRARY_VERSION_LEGACY"
And this is a portion of the Stacktrace:
java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/core/animation/AnimatorCompatHelper;
at eu.davidea.flexibleadapter.common.FlexibleItemAnimator.resetAnimation(FlexibleItemAnimator.java:646)
at eu.davidea.flexibleadapter.common.FlexibleItemAnimator.animateMove(FlexibleItemAnimator.java:385)
at androidx.recyclerview.widget.SimpleItemAnimator.animatePersistence(SimpleItemAnimator.java:138)
at androidx.recyclerview.widget.RecyclerView$4.processPersistent(RecyclerView.java:632)
at androidx.recyclerview.widget.ViewInfoStore.process(ViewInfoStore.java:237)
at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep3(RecyclerView.java:3994)
at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3652)
at androidx.recyclerview.widget.RecyclerView.consumePendingUpdateOperations(RecyclerView.java:1888)
at androidx.recyclerview.widget.RecyclerView$ViewFlinger.run(RecyclerView.java:5044)
So is this a multidex configuration error or has this something to do with the outdated library? Or is it something else?
