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android – IncompatibleClassChangeError com.google.gson.annotations.SerializedName.value

Posted by: admin June 16, 2020 Leave a comment


We are getting IncompatibleClassChangeError in Samsung device when user update app from Play Store. Please check below log.

java.lang.IncompatibleClassChangeError: Couldn't find com.google.gson.annotations.SerializedName.value
at libcore.reflect.AnnotationAccess.toAnnotationInstance(AnnotationAccess.java:659)
at libcore.reflect.AnnotationAccess.toAnnotationInstance(AnnotationAccess.java:641)
at libcore.reflect.AnnotationAccess.getDeclaredAnnotation(AnnotationAccess.java:170)
at java.lang.reflect.Field.getAnnotation(Field.java:242)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldName(ReflectiveTypeAdapterFactory.java:71)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldName(ReflectiveTypeAdapterFactory.java:67)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:142)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:83)
at com.google.gson.Gson.getAdapter(Gson.java:359)
at com.google.gson.Gson.fromJson(Gson.java:809)
at com.google.gson.Gson.fromJson(Gson.java:775)
at com.google.gson.Gson.fromJson(Gson.java:724)
at com.google.gson.Gson.fromJson(Gson.java:696)
at com.cubii.utils.SessionManager.getUserID(SessionManager.java:70)
at com.cubii.BluetoothLeService.broadcastUpdate(BluetoothLeService.java:188)
at com.cubii.BluetoothLeService.access$400(BluetoothLeService.java:47)
at com.cubii.BluetoothLeService$1.onCharacteristicChanged(BluetoothLeService.java:139)
at android.bluetooth.BluetoothGatt$1.onNotify(BluetoothGatt.java:443)
at android.bluetooth.IBluetoothGattCallback$Stub.onTransact(IBluetoothGattCallback.java:399)`enter code here`
at android.os.Binder.execTransact(Binder.java:446)

And code is as below:

public int getUserID(){
    try {
        String json = preferences.getString("User", "");

        LoginResponse loginResponse = new Gson().fromJson(json, LoginResponse.class);//getting error from this line

        Integer id = 0;
        if (loginResponse != null) {
            if (loginResponse.getId() != null) {
                id = loginResponse.getId();
            } else {
                id = loginResponse.getUserId();

        return (id == null) ? 0 : id;
    }catch (Exception e){
    return 0;

LoginResponse is my POJO class.

preferences.getString("User", "")

will return JSON String which is Server response.

How to&Answers:

Looks like a Samsung Issue .. Lot of people are having the same issue not only with gson lib but also with other libs as well .I think you can’t do much about it ,only wait for Samsung developers to fix this.. Already this question is raised on samsung developer forum http://developer.samsung.com/forum/board/thread/view.do?boardName=General&messageId=280930

There are more reports of the problem here and it only affects samsung devices.


Some of them are also having this issue on devices other than Samsung so it may not be completly Samsungs fault. This issue is already assigned to the Google team .And as one of the Google team member mentioned if someone can share the bug report to the team they can fix this ASAP.

After reproducing the issue, navigate to developer settings, ensure
‘USB debugging’ is enabled, then enable ‘Bug report shortcut’. To take
bug report, hold the power button and select the ‘Take bug report’

Note: Please upload the bug report to google drive and share the
folder to [email protected], then share the link here.


Yes this happens in most of Samsung’s phones. I also got same issue.

I got the solution of it.

At first all phone’s company was ignoring comments ( // or /* */ ) in .json File.

But now Samsung developers are not ignoring it.

So The best Solution is that you have to remove all comment ( // or /* */ ) lines in your .json file