IssueTracker

Component used: androidx.leanback:leanback Version used: 1.2.0-alpha04

I haven't gone through the rest but onInflateTitleView documentation / code needs to be updated.

Here: https://developer.android.com/reference/androidx/leanback/app/BrandedSupportFragment#onInflateTitleView(android.view.LayoutInflater,android.view.ViewGroup,android.os.Bundle) the documentation states:

@returns Title view which must have a descendant with id browse_title_group that implements TitleViewAdapter.Provider, or null for no title view.

null for no title view

However the method is declared as @NonNull.

This also raises a compile time error with the Kotlin-code at least (I haven't checked with Java class).

So, for consistency either the method return value should be declared as @Nullable or the documentation needs to be updated.

I propose to update the code and mark the method as @Nullable since the intended behaviour is well defined in both the documentation and the current implementation of BrandedSupportFragment making a nullable title a valid usecase.

Leanback version: androidx.leanback:leanback:1.2.0-alpha04