java.lang.ClassCastException: android.support.v7.widget.ActivityChooserView$InnerLayout cannot be cast to android.support.v7.widget.LinearLayoutCompat

Question

Switching from LinearLayout to ConstraintLayout throwing this error

java.lang.ClassCastException: android.support.v7.widget.ActivityChooserView$InnerLayout cannot be cast to android.support.v7.widget.LinearLayoutCompat                                                                                                                                             

The error occurs when i try to inflate the menu in onCreateOptionsMenu() in my fragment.

My menu which I inflate :-

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">   
    <item
        android:id="@+id/action_share"
        app:showAsAction="always"
        android:orderInCategory="101"
        android:icon="@android:drawable/ic_menu_share"
        android:title="@string/action_share"
        app:actionProviderClass="android.support.v7.widget.ShareActionProvider"
        />
</menu>

My onCreateOptionsMenu(..)

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {     
    inflater.inflate(R.menu.customerdetail, menu);      
    MenuItem menuItem = menu.findItem(R.id.action_share);
    mShareActionProvider = (ShareActionProvider) 
    MenuItemCompat.getActionProvider(menuItem);         
 // If i comment out this whole part everything is fine !!
 }

Edit :- ScreenShot of the log:-

Update :- Adding the app:actionProviderClass="android.support.v7.widget.ShareActionProvider" item causes the error.

As suggested by ShaneCoder dropping down to 27.0.2 / changing to LinearLayout removes the error but i want to know

Why is 27.1.0 is throwing such error at runtime while inflating Class,android.support.v7.widget.ShareActionProvider ? (is it a bug in 27.1.0 )

Sulfuric

check if you are using linear layout somewhere in the activity – Barnebas

even that was my first reaction.. i removed all possible linear Layouts even in the fragments..!! @Redman – Sulfuric

Somewhere in your Java code you are Cast Linear Layout with LinearLayoutCompat – Urba

Nope i havent, i checked all of those before posting the question !! @Urba – Sulfuric

Please post full stacktrace, not only the error – Cognac

Also, why do you have a constraint layout immediately inside another? – Cognac

adding the full stacktrace says Body is limited to 30000 characters; you entered 31914. @cricket_007 and i wrapped another constraint layout in because i could not give paddingbottom to the immediate child of the ScrollView – Sulfuric

Okay, then add the exception message plus at least 4 lines that say "Caused by", and everything between – Cognac

the edited part is all i get in the logcat !! no such crash exception "caused by" exception(except the classCastException)...i searched but found none with this error !! @cricket_007 – Sulfuric

@cricket_007 added the screenshot of the logcat !! – Sulfuric

Are you sure the constraint layout is the issue? Are you sure this exception is related to your application? Can you make a minimal reproducible example, please? – Cognac

okay sure ,i will check it out ..by making a short demo !! – Sulfuric

at ToolbarActionBar.populateOptionMenu... Unless you're loading this layout into a Toolbar or a Share action, I don't think the ConstraintLayout is there problem. – Cognac

@cricket_007 thanks !! i reached to a conclusion now and i reduced the question to as minimal as possible , if i comment out the whole onCreateOptionsMenu(..)( menu-contains a shareActionProvider ) inside the fragment then everything works fine. P.S this problem occurs after i switch to constraintLayout.. – Sulfuric

Answer 1

Not sure if this is the issue you're fighting ...

I recently upgraded my support library dependencies. With support libraries 27.1.0 I was getting this exception with proven code. I'm using 27.0.2 now. This exception is gone.

Not tested or proven, but thought it might help.

Edit

I'm not sure what is wrong with 27.1.0. I've had to back up a minor release in the past to resolve from upgrading to the latest support libraries. I guess nobody's perfect. I believe 27.0.2 is the latest release prior to 27.1.0

Edit 2

Here's a link to the issue on Googles Issue Tracker. It's marked fixed February 28, 2018. Should be released soon.

Edit 3

Confirmed fixed in 27.1.1

Codon

thanks a lot for your response , but i want to know why should i drop to 27.0.2 or 27.0.3 is it a bug in 27.1.0 ? – Sulfuric

It's a bug, pretty sure. – Delanie

It's now fixed in 27.1.1: developer.android.com/topic/libraries/support-library/… – Alitta

Confirmed that the fix is in 27.1.1 ("ShareActionProvider throws ClassCastException in 27.1.0" from link Morgillo posted above) – Delanie

Answer 2

I also faced same issue. It is bug. SharedActionProvider throws exception in 27.1.0 It got resolved after upgrading to 27.1.1 Hope this will help. Have a look at this link Fixed issues in 27.1.1

Nephogram