Caused by: java.lang.ClassNotFoundException: Didn't find class "com.fasterxml.jackson.databind.ObjectMapper" on path

[chinarbhandari]

Hi, I am using Jackson library in my android library project. Below is my gradle dependency:

// Jackson core libraries
implementation 'com.fasterxml.jackson.core:jackson-databind:2.18.2'
implementation 'com.fasterxml.jackson.core:jackson-core:2.18.2'
implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:2.18.2'

When i create release aar file and add it in a reference app,  i get below error:

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/fasterxml/jackson/databind/ObjectMapper;
                                                                                                	at r.a(SourceFile:19)
                                                                                                	at .initiateAttestationOperation(SourceFile:29)
                                                                                                	at MainActivity.kt:22)
                                                                                                	at (MainActivity.kt:15)
                                                                                                	at android.app.Activity.performCreate(Activity.java:9019)
                                                                                                	at android.app.Activity.performCreate(Activity.java:8997)
                                                                                                	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1528)
                                                                                                	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4111)
                                                                                                	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4316)
                                                                                                	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:222)
                                                                                                	at android.app.servertransaction.TransactionExecutor.executeNonLifecycleItem(TransactionExecutor.java:133)
                                                                                                	at android.app.servertransaction.TransactionExecutor.executeTransactionItems(TransactionExecutor.java:103)
                                                                                                	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:80)
                                                                                                	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2719)
                                                                                                	at android.os.Handler.dispatchMessage(Handler.java:109)
                                                                                                	at android.os.Looper.loopOnce(Looper.java:232)
                                                                                                	at android.os.Looper.loop(Looper.java:317)
                                                                                                	at android.app.ActivityThread.main(ActivityThread.java:8787)
                                                                                                	at java.lang.reflect.Method.invoke(Native Method)
                                                                                                	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:591)
                                                                                                	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:871)
                                                                                                Caused by: java.lang.ClassNotFoundException: Didn't find class "com.fasterxml.jackson.databind.ObjectMapper" on path: DexPathList[[dex file /code_cache/.overlay/base.apk/classes.dex", dex file "/code_cache/.overlay/base.apk/classes3.dex", zip file "/data/app/~~vy2hdiWCxUF-xcqLRHdwzQ==/GfqePlvujEUcbuBY4C9s6A==/base.apk"],nativeLibraryDirectories=[/data/app/~~vy2hdiWCxUF-xcqLRHdwzQ==/com.mastercard.test.tasdummytest-GfqePlvujEUcbuBY4C9s6A==/lib/arm64, /system/lib64, /system_ext/lib64]]
                                                                                                	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:259)
                                                                                                	at java.lang.ClassLoader.loadClass(ClassLoader.java:637)
                                                                                                	at java.lang.ClassLoader.loadClass(ClassLoader.java:573)

[chinarbhandari]

Do i have to add any additional dependency for my gradle project?

[cowtowncoder]

Sounds like an Android problem, not specific to Jackson. Maybe ask on Android dev/support forums?
(or, Gradle)