Retrofit: java.lang.NoClassDefFoundError: retrofit2.Retrofit$Builder

Created on 16 Feb 2016  路  10Comments  路  Source: square/retrofit

I am facing this issue in
compile 'com.squareup.retrofit2:retrofit:2.0.0-beta4'
Getting error on this line/
retrofit = new Retrofit.Builder()
.baseUrl(C.API_ROOT_URL)
.build();

picture zubyf09

Most helpful comment

FIXED!!!
Updated retrofit lib from 1.9.0 -to - :2.2.0'

I tried removing " multiDexEnabled true" , but not working !!!
Tried adding compile 'com.android.support:multidex:1.0.0' still not working.!!!

But Finally I fixed this issue by extending my base Application class

_public class MyApplication extends MultiDexApplication { ... }_

dependencies {
........
compile 'com.squareup.retrofit2:retrofit:2.2.0'
compile 'com.squareup.retrofit2:converter-gson:2.2.0'
compile 'com.android.support:multidex:1.0.1'
}

defaultConfig {
.......
multiDexEnabled true
}

Please Check this link to know more about multidex enable

(https://developer.android.com/studio/build/multidex.html)
Hope This would help to someone facing the same issue
--Thanks

picture VishalJogiya on 8 May 2017
👍3

All 10 comments

This is a problem with your build configuration, not Retrofit, and there's not enough information here to figure out what's wrong. Usage questions are best asked on StackOverflow with the 'retrofit' tag (and a lot more details about your build configuration) so that they can be resolved and archived for future developers experiencing similar problems.

JakeWharton picture JakeWharton on 16 Feb 2016

i got same error.

depedencies

    compile 'com.squareup.retrofit2:retrofit:2.0.0-beta4'
    compile 'com.squareup.retrofit2:converter-gson:2.0.0-beta4'

code

Retrofit retrofit = new Retrofit.Builder()
    .baseUrl(server.getIp() + ":" + server.getPort())
    .addConverterFactory(GsonConverterFactory.create())
    .build();

error

02-26 19:19:51.041 11979-11979/com.simp.ams E/dalvikvm: Could not find class 'retrofit2.Retrofit$Builder', referenced from method com.simp.ams.activity.LoginActivity$LoginTask.doInBackground
02-26 19:19:51.081 11979-12424/com.simp.ams E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #2
                                                              Process: com.simp.ams, PID: 11979
                                                              java.lang.RuntimeException: An error occured while executing doInBackground()
                                                                  at android.os.AsyncTask$3.done(AsyncTask.java:300)
                                                                  at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
                                                                  at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
                                                                  at java.util.concurrent.FutureTask.run(FutureTask.java:242)
                                                                  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
                                                                  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
                                                                  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
                                                                  at java.lang.Thread.run(Thread.java:841)
                                                               Caused by: java.lang.NoClassDefFoundError: retrofit2.Retrofit$Builder
                                                                  at com.simp.ams.activity.LoginActivity$LoginTask.doInBackground(LoginActivity.java:211)
                                                                  at com.simp.ams.activity.LoginActivity$LoginTask.doInBackground(LoginActivity.java:185)
                                                                  at android.os.AsyncTask$2.call(AsyncTask.java:288)
                                                                  at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                                                                  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)聽
                                                                  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)聽
                                                                  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)聽
                                                                  at java.lang.Thread.run(Thread.java:841)聽
ghost picture ghost on 26 Feb 2016

@PaijoRX this issue because of build configuration.Just Comment you google play services and try to rebuild your project it will works fine for you.After that user only Google Play service which you are using..in Your app.https://developers.google.com/android/guides/setup

zubyf09 picture zubyf09 on 7 Mar 2016

I also got same Issue
three days im finding the solution

i posted query in Stackoverflow http://stackoverflow.com/questions/37045787/java-lang-noclassdeffounderror-retrofit2-utils-in-android

pandiyan022 picture pandiyan022 on 10 May 2016

I also got same issue

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.3.0'
compile files('libs/mina-core-2.0.7.jar')
compile files('libs/red5streaming.jar')
compile files('libs/secondscreen.jar')
compile 'com.google.android.gms:play-services:8.4.0'
compile 'com.google.android.gms:play-services-location:8.4.0'

// retrofit, gson
compile 'com.google.code.gson:gson:2.6.2'
compile 'com.squareup.retrofit2:retrofit:2.0.2'
compile 'com.squareup.retrofit2:converter-gson:2.0.2'

}

Issue :
java.lang.NoClassDefFoundError: retrofit2.Retrofit$Builder
at com.camapp.presenter.rest.ApiClient.getClient(ApiClient.java:14)

dharmendragkv picture dharmendragkv on 18 Aug 2016

@dharmendragkv Remove "compile 'com.google.android.gms:play-services:8.4.0" This line in your gradle. and use what u exactly need like location,GoogleAccount,gsm and etc, i hope it will help you

pandiyan022 picture pandiyan022 on 24 Aug 2016

still Getting the same Error.. Can someone help me?
also i tried okhttp but still it is not working below 5.0 version.
Didn't find a stackoverflow answer useful to me so posting here.

dependencies {
compile 'com.android.support:support-v4:25.3.1'
compile 'de.hdodenhof:circleimageview:1.3.0'
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:design:25.3.1'
compile 'com.android.support:cardview-v7:25.3.1'
compile 'com.android.support:palette-v7:25.3.1'
compile files('libs/achartengine-1.1.0.jar')
compile files('libs/poi-3.2-FINAL.jar')

// compile files('libs/retrofit-1.9.0.jar')
compile files('libs/itextpdf-5.1.0.jar')

compile 'com.google.code.gson:gson:2.8.0'
debugCompile 'com.amitshekhar.android:debug-db:1.0.0'
compile 'jp.wasabeef:blurry:2.1.1'
compile 'com.google.firebase:firebase-ads:10.2.4'

compile project(path: ':text_drawable_library')
compile('com.crashlytics.sdk.android:crashlytics:2.5.7@aar') {
    transitive = true;
}

// compile 'com.github.wooplr:Spotlight:1.2.3'
compile 'com.squareup.okhttp:okhttp:2.2.0'
compile 'com.google.android.gms:play-services-analytics:10.2.4'
compile 'com.google.android.gms:play-services-auth:10.2.4'

compile 'com.squareup.retrofit:retrofit:1.9.0'

}

=============================================================
FATAL EXCEPTION: AsyncTask #1
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:278)
at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:864)
Caused by: java.lang.NoClassDefFoundError: retrofit.RestAdapter$Builder
at com.tacktile.helper_classes.WebServices.getApi2(WebServices.java:112)
at com.tacktile.helper_classes.WebServices.mainMethod(WebServices.java:47)
at com.tacktile.helper_classes.WebServices.callWebService(WebServices.java:155)
at com.tacktile.helper_classes.WebServices.doInBackground(WebServices.java:162)
at com.tacktile.helper_classes.WebServices.doInBackground(WebServices.java:34)
at android.os.AsyncTask$2.call(AsyncTask.java:264)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)聽
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)聽
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)聽
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)聽
at java.lang.Thread.run(Thread.java:864)聽

VishalJogiya picture VishalJogiya on 8 May 2017

FIXED!!!
Updated retrofit lib from 1.9.0 -to - :2.2.0'

I tried removing " multiDexEnabled true" , but not working !!!
Tried adding compile 'com.android.support:multidex:1.0.0' still not working.!!!

But Finally I fixed this issue by extending my base Application class

_public class MyApplication extends MultiDexApplication { ... }_

dependencies {
........
compile 'com.squareup.retrofit2:retrofit:2.2.0'
compile 'com.squareup.retrofit2:converter-gson:2.2.0'
compile 'com.android.support:multidex:1.0.1'
}

defaultConfig {
.......
multiDexEnabled true
}

Please Check this link to know more about multidex enable

(https://developer.android.com/studio/build/multidex.html)
Hope This would help to someone facing the same issue
--Thanks

VishalJogiya picture VishalJogiya on 8 May 2017
👍3

04-21 14:06:34.163 4469-4469/? E/Zygote: v2
04-21 14:06:34.173 4469-4469/? E/Zygote: accessInfo : 0
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: FATAL EXCEPTION: main
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: Process: com.mkurbanov.realwebapp, PID: 4469
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/gson/Gson;
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at retrofit2.converter.gson.GsonConverterFactory.create(GsonConverterFactory.java:42)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at com.mkurbanov.realwebapp.MainActivity.onCreate(MainActivity.java:24)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.Activity.performCreate(Activity.java:6904)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1136)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3266)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread.access$1100(ActivityThread.java:229)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.os.Looper.loop(Looper.java:148)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7406)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.gson.Gson" on path: DexPathList[[zip file "/data/app/com.mkurbanov.realwebapp-2/base.apk"],nativeLibraryDirectories=[/data/app/com.mkurbanov.realwebapp-2/lib/arm, /vendor/lib, /system/lib]]
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at retrofit2.converter.gson.GsonConverterFactory.create(GsonConverterFactory.java:42)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at com.mkurbanov.realwebapp.MainActivity.onCreate(MainActivity.java:24)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.Activity.performCreate(Activity.java:6904)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1136)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3266)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread.access$1100(ActivityThread.java:229)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.os.Looper.loop(Looper.java:148)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7406)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)聽
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: Suppressed: java.lang.ClassNotFoundException: com.google.gson.Gson
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at java.lang.Class.classForName(Native Method)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: ... 15 more
04-21 14:06:34.393 4469-4469/com.mkurbanov.realwebapp E/AndroidRuntime: Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available

How I can :(

Mkurbanov picture Mkurbanov on 21 Apr 2018

implementation 'com.squareup.retrofit2:retrofit:2.5.0'

implementation 'com.squareup.retrofit2:converter-gson:2.5.0'

implementation 'com.squareup.retrofit2:converter-scalars:2.5.0'

Nithinpj picture Nithinpj on 30 Jan 2020
👍1
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