Android Databinding: “Method references using '.' is deprecated”

Question

When using databinding in my app, I get the following warning when compiling:

Warning:Method references using \'.\' is deprecated. Instead of \'handler.onItemClick

Answer 1

My guess is that the deprecation warning is shown because Android Data Binding is currently not being fully compatible with Java 8. Putting the following into your project's build.gradle file should hide mentioned warning.

android {
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }
}

Unless you are using Java 8 features in your project.