Error inflating class androidx.recyclerview.widget.RecyclerView after migration to androidx

Question

I just made a migration to androidx through Android Studio menu option Refactor -> Refactor to AndroidX

I'm getting the following error:

android.view.InflateException: Binary XML file line #2: Error inflating class androidx.recyclerview.widget.RecyclerView

Any idea?

Stacktrace:

10-28 20:01:59.913 13394-13394/com.example.impwala E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.impwala, PID: 13394
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.impwala/com.example.impwala.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class androidx.recyclerview.widget.RecyclerView
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2235)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284)
        at android.app.ActivityThread.access$800(ActivityThread.java:144)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:212)
        at android.app.ActivityThread.main(ActivityThread.java:5133)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691)
        at dalvik.system.NativeStart.main(Native Method)
     Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class androidx.recyclerview.widget.RecyclerView
        at android.view.LayoutInflater.createView(LayoutInflater.java:620)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:696)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:555)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:161)
        at com.example.impwala.MainActivity.onCreate(MainActivity.java:12)
        at android.app.Activity.performCreate(Activity.java:5243)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2199)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284) 
        at android.app.ActivityThread.access$800(ActivityThread.java:144) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:212) 
        at android.app.ActivityThread.main(ActivityThread.java:5133) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:515) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691) 
        at dalvik.system.NativeStart.main(Native Method) 
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.constructNative(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at android.view.LayoutInflater.createView(LayoutInflater.java:594)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:696) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:469) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:555) 
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:161) 
        at com.example.impwala.MainActivity.onCreate(MainActivity.java:12) 
        at android.app.Activity.performCreate(Activity.java:5243) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2199) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284) 
        at android.app.ActivityThread.access$800(ActivityThread.java:144) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:212) 
        at android.app.ActivityThread.main(ActivityThread.java:5133) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:515) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691) 
        at dalvik.system.NativeStart.main(Native Method) 
     Caused by: java.lang.OutOfMemoryError
        at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
        at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:594)
        at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:429)
        at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:856)
        at android.content.res.Resources.loadDrawable(Resources.java:2129)
        at android.content.res.TypedArray.getDrawable(TypedArray.java:602)
        at android.view.View.<init>(View.java:3685)
        at android.view.ViewGroup.<init>(ViewGroup.java:470)
        at androidx.recyclerview.widget.RecyclerView.<init>(RecyclerView.java:651)
        at androidx.recyclerview.widget.RecyclerView.<init>(RecyclerView.java:647)
        at java.lang.reflect.Constructor.constructNative(Native Method) 
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423) 
        at android.view.LayoutInflater.createView(LayoutInflater.java:594) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:696) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:469) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:555) 
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:161) 
        at com.example.impwala.MainActivity.onCreate(MainActivity.java:12) 
        at android.app.Activity.performCreate(Activity.java:5243) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2199) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284) 
        at android.app.ActivityThread.access$800(ActivityThread.java:144) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:212) 
        at android.app.ActivityThread.main(ActivityThread.java:5133) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:515) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691) 
        at dalvik.system.NativeStart.main(Native Method) 

I already tried answers from this question but they didn't help me

Error inflating class androidx.constraintlayout.ConstraintLayout after migration to androidx

Answer 1

First in the XML file make sure you have this signature

androidx.recyclerview.widget.RecyclerView 

if you do have it

open the logcat and read the whole error. You might see caused by .. and this is your actual error for me it was @dimen/somedimen. I wrote the value 10, so when I fix it 10dp. my problem solved.