Production Android app showing Caused by: java.lang.NoClassDefFoundError errors

Question

How can a production app show a class not found error to users but on the emulator it works just fine with Android 9.0. Shouldnt the emulator also break or show an error during compiling or building?

java.lang.RuntimeException:

at android.os.AsyncTask$3.done (AsyncTask.java:354) at java.util.concurrent.FutureTask.finishCompletion (FutureTask.java:383) at java.util.concurrent.FutureTask.setException (FutureTask.java:252) at java.util.concurrent.FutureTask.run (FutureTask.java:271) at android.os.AsyncTask$SerialExecutor$1.run (AsyncTask.java:245) at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:641) at java.lang.Thread.run (Thread.java:764)

Caused by: java.lang.NoClassDefFoundError:

at org.apache.http.impl.client.AbstractHttpClient. (AbstractHttpClient.java:182) at org.apache.http.impl.client.DefaultHttpClient. (DefaultHttpClient.java:150) at com.exposure.utilities.RestClient.executeRequest (RestClient.java:162) at com.exposure.utilities.RestClient.Execute (RestClient.java:127)
at com.exposure.utilities.Utility.getData (Utility.java:162) at com.exposure.utilities.DataTask.doInBackground (DataTask.java:26) at com.exposure.utilities.DataTask.doInBackground (DataTask.java:9) at android.os.AsyncTask$2.call (AsyncTask.java:333) at java.util.concurrent.FutureTask.run (FutureTask.java:266)

Caused by: java.lang.ClassNotFoundException:

at dalvik.system.BaseDexClassLoader.findClass (BaseDexClassLoader.java:134) at java.lang.ClassLoader.loadClass (ClassLoader.java:379) at java.lang.ClassLoader.loadClass (ClassLoader.java:312)

Yes, but I have 450 apps, why in the world would it be throwing an error on load where no one can use it? — Mike Flynn
– Mike Flynn, Commented Nov 29, 2018 at 12:46

karan · Accepted Answer · 2018-11-29 12:03:03Z

2

It looks like this is due to http client being deprecated. Add below code to your manifest application tag.

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

With android pie they have deprecated support for Apache HTTP client starting from andorid pie, check change log for reference https://developer.android.com/about/versions/pie/android-9.0-changes-28#apache-p

answered Nov 29, 2018 at 12:03

karan

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3 Comments

Mike Flynn Over a year ago

This is Android 9 and mainly on Pixel 1, 2 and 3. Why in the world would I be able to submit an app to the store that would crash on load? Emulator worked just fine.

Mike Flynn Over a year ago

Android 9 works fine, without that update in the emulator, no crash.

Mike Flynn Over a year ago

I went ahead and updated the http connection code to the non deprecated one.

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