Data-Binding fails with "couldn't make a guess"

android android-gradle-plugin android-databinding androidx android-studio-3.2
Martin Zeitler picture Martin Zeitler · Sep 25, 2018 · Viewed 19k times · Source

Since the update to Android Studio 3.2.0 I face the following issue:

Execution failed for task ':mobile:dataBindingGenBaseClassesDebug'.

> couldn't make a guess for com.ACME.database.model.Order

also seen this answer, which hints for that "package-names must start with a lower-case letter".

... it seems alike, as if this variable assignment would be the cause:

<data class=".databinding.OrderFragmentBinding">
    <variable name="order" type="com.ACME.database.model.Order"/>
    ...
</data>

found: New data binding compiler for binding classes, which does not explain the change in behavior.

Q: are such assignments also affected by that naming convention? I mean, is there any chance (beside changing the uppercase package-name) to make that data-binding v2 "guess" work out?

Answer

Muhammad Noman picture Muhammad Noman · Aug 28, 2019

Its because of your class name or package name which use databinding. These classes( which use databinding) has to started with capital letter and packages started with lowercase.

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