java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/core/util/Pools$SynchronizedPool;

This library was working fine with 1.9.0.

I updated to 2.0.0 and got this error.

I downgraded to 1.9.0 or even tested with 1.13.0. Worked fine.

So there is some issue with 2.0.0 that on this line App got crashed

Fresco.initialize(this);

For more information. I also tried these solution which didnot worked.

implementation 'com.android.support:support-compat:28.0.0'

Also adding this line in gradle.properties neither worked.

android.enableJetifier = false

with following logs output. Thanks

--------- beginning of crash 06-30 12:16:38.778 5360-5360/? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.my.app, PID: 5360 java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/core/util/Pools$SynchronizedPool; at com.facebook.imagepipeline.platform.PlatformDecoderFactory.buildPlatformDecoder(PlatformDecoderFactory.java:34) at com.facebook.imagepipeline.core.ImagePipelineFactory.getPlatformDecoder(ImagePipelineFactory.java:304) at com.facebook.imagepipeline.core.ImagePipelineFactory.getPlatformBitmapFactory(ImagePipelineFactory.java:296) at com.facebook.imagepipeline.core.ImagePipelineFactory.getAnimatedFactory(ImagePipelineFactory.java:159) at com.facebook.imagepipeline.core.ImagePipelineFactory.getImageDecoder(ImagePipelineFactory.java:219) at com.facebook.imagepipeline.core.ImagePipelineFactory.getProducerFactory(ImagePipelineFactory.java:319) at com.facebook.imagepipeline.core.ImagePipelineFactory.getProducerSequenceFactory(ImagePipelineFactory.java:350) at com.facebook.imagepipeline.core.ImagePipelineFactory.getImagePipeline(ImagePipelineFactory.java:276) at com.facebook.drawee.backends.pipeline.PipelineDraweeControllerBuilderSupplier.<init>(PipelineDraweeControllerBuilderSupplier.java:53) at com.facebook.drawee.backends.pipeline.PipelineDraweeControllerBuilderSupplier.<init>(PipelineDraweeControllerBuilderSupplier.java:44) at com.facebook.drawee.backends.pipeline.PipelineDraweeControllerBuilderSupplier.<init>(PipelineDraweeControllerBuilderSupplier.java:37) at com.facebook.drawee.backends.pipeline.Fresco.initializeDrawee(Fresco.java:96) at com.facebook.drawee.backends.pipeline.Fresco.initialize(Fresco.java:85) at com.facebook.drawee.backends.pipeline.Fresco.initialize(Fresco.java:38) at com.my.app.activities.MainActivity.onCreate(MainActivity.java:77) at android.app.Activity.performCreate(Activity.java:5990) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) at android.app.ActivityThread.access$800(ActivityThread.java:151) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5254) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.core.util.Pools$SynchronizedPool" on path: DexPathList[[zip file "/data/app/com.my.app-2/base.apk"],nativeLibraryDirectories=[/data/app/com.my.app-2/lib/x86, /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 com.facebook.imagepipeline.platform.PlatformDecoderFactory.buildPlatformDecoder(PlatformDecoderFactory.java:34)  at com.facebook.imagepipeline.core.ImagePipelineFactory.getPlatformDecoder(ImagePipelineFactory.java:304)  at com.facebook.imagepipeline.core.ImagePipelineFactory.getPlatformBitmapFactory(ImagePipelineFactory.java:296)  at com.facebook.imagepipeline.core.ImagePipelineFactory.getAnimatedFactory(ImagePipelineFactory.java:159)  at com.facebook.imagepipeline.core.ImagePipelineFactory.getImageDecoder(ImagePipelineFactory.java:219)  at com.facebook.imagepipeline.core.ImagePipelineFactory.getProducerFactory(ImagePipelineFactory.java:319)  at com.facebook.imagepipeline.core.ImagePipelineFactory.getProducerSequenceFactory(ImagePipelineFactory.java:350)  at com.facebook.imagepipeline.core.ImagePipelineFactory.getImagePipeline(ImagePipelineFactory.java:276)  at com.facebook.drawee.backends.pipeline.PipelineDraweeControllerBuilderSupplier.<init>(PipelineDraweeControllerBuilderSupplier.java:53)  at com.facebook.drawee.backends.pipeline.PipelineDraweeControllerBuilderSupplier.<init>(PipelineDraweeControllerBuilderSupplier.java:44)  at com.facebook.drawee.backends.pipeline.PipelineDraweeControllerBuilderSupplier.<init>(PipelineDraweeControllerBuilderSupplier.java:37)  at com.facebook.drawee.backends.pipeline.Fresco.initializeDrawee(Fresco.java:96)  at com.facebook.drawee.backends.pipeline.Fresco.initialize(Fresco.java:85)  at com.facebook.drawee.backends.pipeline.Fresco.initialize(Fresco.java:38)  at com.my.app.activities.MainActivity.onCreate(MainActivity.java:77)  at android.app.Activity.performCreate(Activity.java:5990)  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)  at android.app.ActivityThread.access$800(ActivityThread.java:151)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:135)  at android.app.ActivityThread.main(ActivityThread.java:5254)  at java.lang.reflect.Method.invoke(Native Method)  at java.lang.reflect.Method.invoke(Method.java:372)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)  Suppressed: java.lang.ClassNotFoundException: androidx.core.util.Pools$SynchronizedPool 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) ... 29 more Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

[ravindranpandu]

Hey Guys,

I recently migrated my fresco version from 1.9.0 to 2.0.0, my app is on android P doesn’t have Android X support libraries, so i was facing the same issue, migrating to android X support libraries works like a charm, but if for some reason you can’t move to Android X use v1.13.0 it works fine, i tried with v1.14.2 like @oprisnik said for some reason it didn’t work for me.

Hope this will help someone 😃

implementation 'com.facebook.fresco:fresco:1.13.0' implementation 'com.facebook.fresco:animated-gif:1.13.0'

[oprisnik]

Version 2.0 requires AndroidX support libraries. If your app is still using the legacy support libs, please use 1.14.2 until you’ve upgraded. We’ll post the changelog for 2.0.0 soon.