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Android app not working on android 6 (marshmallow) but working on other android versions classNotFoundException

I am trying to make an HTTP call to a server to get its HTML contents everything is working fine on other android versions. But in android 6 when the app is calling HTMLunit it crashes.
I know it has to do with something that works on API above 23. but not on the 23.. I tried many things but I sill can't fix it...
Why it's important to run the app on android 6:
A big number of my users is using android 6 and 5
The error:
FATAL EXCEPTION: Thread-9255
Process: bd.maruf.myapplication, PID: 7773
java.lang.NoClassDefFoundError: java.util.function.Supplier
at libcore.reflect.InternalNames.getClass(InternalNames.java:55)
at java.lang.Class.getDexCacheType(Class.java:476)
at java.lang.reflect.Method.getReturnType(Method.java:183)
at java.lang.Class.getDeclaredMethods(Class.java:678)
at com.gargoylesoftware.htmlunit.javascript.configuration.AbstractJavaScriptConfiguration.process(AbstractJavaScriptConfiguration.java:212)
at com.gargoylesoftware.htmlunit.javascript.configuration.AbstractJavaScriptConfiguration.getClassConfiguration(AbstractJavaScriptConfiguration.java:193)
at com.gargoylesoftware.htmlunit.javascript.configuration.AbstractJavaScriptConfiguration.<init>(AbstractJavaScriptConfiguration.java:67)
at com.gargoylesoftware.htmlunit.javascript.configuration.JavaScriptConfiguration.<init>(JavaScriptConfiguration.java:685)
at com.gargoylesoftware.htmlunit.javascript.configuration.JavaScriptConfiguration.getInstance(JavaScriptConfiguration.java:701)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.<init>(JavaScriptEngine.java:161)
at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:326)
at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:275)
at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:265)
at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:257)
at bd.maruf.myapplication.MainActivity.main(MainActivity.kt:32)
at bd.maruf.myapplication.MainActivity.onCreate$lambda$1$lambda$0(MainActivity.kt:22)
at bd.maruf.myapplication.MainActivity.$r8$lambda$VtPJx1mT1BVGpp5vWQWqcx_e4kM(MainActivity.kt)
at bd.maruf.myapplication.MainActivity$$ExternalSyntheticLambda2.run(D8$$SyntheticClass)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.ClassNotFoundException: Didn't find class "java.util.function.Supplier" on path: DexPathList[[zip file "/data/app/bd.maruf.myapplication-1/base.apk"],nativeLibraryDirectories=[/data/app/bd.maruf.myapplication-1/lib/arm, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at libcore.reflect.InternalNames.getClass(InternalNames.java:53)
at java.lang.Class.getDexCacheType(Class.java:476) 
at java.lang.reflect.Method.getReturnType(Method.java:183) 
at java.lang.Class.getDeclaredMethods(Class.java:678) 
at com.gargoylesoftware.htmlunit.javascript.configuration.AbstractJavaScriptConfiguration.process(AbstractJavaScriptConfiguration.java:212) 
at com.gargoylesoftware.htmlunit.javascript.configuration.AbstractJavaScriptConfiguration.getClassConfiguration(AbstractJavaScriptConfiguration.java:193) 
at com.gargoylesoftware.htmlunit.javascript.configuration.AbstractJavaScriptConfiguration.<init>(AbstractJavaScriptConfiguration.java:67) 
at com.gargoylesoftware.htmlunit.javascript.configuration.JavaScriptConfiguration.<init>(JavaScriptConfiguration.java:685) 
at com.gargoylesoftware.htmlunit.javascript.configuration.JavaScriptConfiguration.getInstance(JavaScriptConfiguration.java:701) 
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.<init>(JavaScriptEngine.java:161) 
at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:326) 
at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:275) 
at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:265) 
at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:257) 
at bd.maruf.myapplication.MainActivity.main(MainActivity.kt:32) 
at bd.maruf.myapplication.MainActivity.onCreate$lambda$1$lambda$0(MainActivity.kt:22) 
at bd.maruf.myapplication.MainActivity.$r8$lambda$VtPJx1mT1BVGpp5vWQWqcx_e4kM(MainActivity.kt) 
at bd.maruf.myapplication.MainActivity$$ExternalSyntheticLambda2.run(D8$$SyntheticClass) 
at java.lang.Thread.run(Thread.java:818) 
Suppressed: java.lang.ClassNotFoundException: java.util.function.Supplier
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 20 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
2022-11-12 18:11:50.861 7773-7807 Surface bd.maruf.myapplication D Surface::disconnect(this=0xaddb7b00,api=1)
what I have tried :
cleaning and rebuilding that project
adding:
defaultConfig { multiDexEnabled true}
dependencies {implementation 'com.android.support:multidex:1.0.3'
3. deleting .gradel and .idea file

java.util.function.Supplier is documented as "Added in API level 24", hence code requiring it will not work on pre 24 SDK due to class absence.

Will try to solve this in HtmlUnit - check https://github.com/HtmlUnit/htmlunit-android/issues/9 or https://twitter.com/htmlunit for progress.

After some analysis and experiments i decide to not fix this. The js engine (Rhino) uses classes from the java.util.function package. Changing this is not a simple task and there are many other thinks to do.
So sorry, but i like to stay with android 7 as minimum requirement.

java.lang.NoClassDefFoundError for an aar library

I followed the official instructions to Add an AAR as a dependency.
The build.gradle of the app has:
implementation files('libs/androidLibrary-release.aar')
The app builds and starts fine. However, it crashes when it uses a method of the library with the following in the logcat:
java.lang.NoClassDefFoundError: Failed resolution of: Lorg/joda/time/DateTime;
at net.mydomain.android.utility.getCurrentTime(SourceFile:1)
...
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.joda.time.DateTime" on path: DexPathList[[zip file "/data/app/com.mydomain.foo-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
...
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
Method getCurrentTime() uses joda-time. The library has the following in its build.gradle:
implementation 'joda-time:joda-time:2.10.5'
I also tried api as follows to no avail:
api 'joda-time:joda-time:2.10.5'
Could anyone offer a tip to help find the culprit?
I used to import aar libraries as modules and they worked flawlessly. I have just updated Android Studio to Arctic Fox and the option to import an aar library is no longer available.

google maps api app keeps stopping in android studio

I am trying to create an application which utilizes Google Maps API. I followed the instructions (installed Google Play Services, created an API key, copied, and then pasted it in .xml file), but when I try to run this app, I get "Maps Demo (the name of the app) keeps stopping" message. (I use Nexus 5 API 28 AVD as an emulator) What might be reasons for that and how to solve this problem?
Logcat:
--------- beginning of crash
2018-11-24 09:07:55.191 2653-2803/? E/AndroidRuntime: FATAL EXCEPTION: Thread-6
Process: com.example.user.mapdirectionsample, PID: 2653
java.lang.NoClassDefFoundError: Failed resolution of: Lorg/apache/http/ProtocolVersion;
at fa.b(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):3)
at ez.a(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):3)
at fb.a(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):15)
at com.google.maps.api.android.lib6.drd.al.a(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):6)
at ee.a(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):21)
at ee.run(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):8)
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.apache.http.ProtocolVersion" on path: DexPathList[[zip file "/data/user_de/0/com.google.android.gms/app_chimera/m/0000000d/MapsDynamite.apk"],nativeLibraryDirectories=[/data/user_de/0/com.google.android.gms/app_chimera/m/0000000d/MapsDynamite.apk!/lib/x86, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at ac.loadClass(:com.google.android.gms.dynamite_dynamiteloader#14574084#14.5.74 (100700-219897028):4)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at fa.b(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):3) 
at ez.a(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):3) 
at fb.a(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):15) 
at com.google.maps.api.android.lib6.drd.al.a(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):6) 
at ee.a(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):21) 
at ee.run(:com.google.android.gms.dynamite_mapsdynamite#14574084#14.5.74 (100700-219897028):8) 
Thanks in advance.

Android dagger api 21 compatibility

I developed app with dagger library on api version 25. But now I tried app on 21 api version and it doesn't working. It's caused by dagger.
Here is error log:
java.lang.NoClassDefFoundError: Failed resolution of: Ldagger/internal/Preconditions;
Caused by: java.lang.ClassNotFoundException: Didn't find class "dagger.internal.Preconditions" on path: DexPathList[[zip file "/data/app/package-2/base.apk"],nativeLibraryDirectories=[/data/app/package-2/lib/x86, /vendor/lib, /system/lib]]
My dagger version: 2.11-rc1.
Where is the problem?
Thanks

Solved by update build tools version

NoClassDefFoundError when trying to build google api client

today i added the google play services library to my project. I have followed the instructions which are given on http://developer.android.com/google/play-services/setup.html#ensure
Screenshot of my Settings: https://drive.google.com/file/d/0Bwe9sI6XZ6rcZGZzdmlaQjVheDA/edit?usp=sharing
The problem is when I try to execute the following code, a noclassdeffounderror exception raises.
public class MainActivity extends Activity {
private GoogleApiClient mGoogleClient;
#Override
protected void onCreate(Bundle savedInstanceState) {
mGoogleClient = new GoogleApiClient.Builder(this)
.addApi(Games.API)
.addScope(Games.SCOPE_GAMES)
.setGravityForPopups(Gravity.TOP | Gravity.CENTER_HORIZONTAL)
.build();
In the logcat the exception looks like
threadid=1: thread exiting with uncaught exception (group=0x40d02930)
FATAL EXCEPTION: main
java.lang.NoClassDefFoundError: com.google.android.gms.common.api.GoogleApiClient$Builder
at com.gmail.mhofer4991.at.taptorotate.MainActivity.onCreate(MainActivity.java:104)
at android.app.Activity.performCreate(Activity.java:5104)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2147)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$600(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5074)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
at dalvik.system.NativeStart.main(Native Method)
Force finishing activity com.example.taptorotate/com.gmail.mhofer4991.at.taptorotate.MainActivity
I also have cleaned and rebuilt the project.
It's driving me crazy that i cannot solve the problem. I know there are already other threads with the same topic and I also tried some solutions which were suggested there but none of them worked for me. Please help me out!

I also had same problem,
java.lang.NoClassDefFoundError:
com.google.android.gms.common.api.GoogleApiClient$Builder
I was using the below dependency on the application build.gradle file.
compile 'com.google.android.gms:play-services:7.8.0'
I changed it to
compile 'com.google.android.gms:play-services-plus:7.8.0'
I updated the Google Play Services (Rev 26) and Google Repository(Rev 20).
After that the exception doesn't occur.
Try to use individual APIs and corresponding build.gradle descriptions as mensioned in the following page,
https://developers.google.com/android/guides/setup#ensure

Try to add obfuscation rules for the Google API's if you have minifyEnabled or ProGuard set to true:
ProGuard Configuration

tryin to work with an implementation of Google Drive in Android i´ve found this error message pointing some classes like:
java.lang.ClassNotFoundException: com.google.android.gms.common.api.Scope
Caused by: java.lang.ClassNotFoundException: Didn't find class
I have found that the real problem is the limit of 64K references when we add dependencies related to GoogleApiClient, so adding multidex support solved my problem:
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
...
...
multiDexEnabled true
}
...
...