It seems there's a mistake in the SimpleAdapter snippet

[ghost]

If I understand correctly, there's a mistake in this line, because it checks newData for being null, but then returns the length of previousData instead of newData:

Wrox-ProfessionalAndroid-4E/Snippets_ch5/app/src/main/java/com/professionalandroid/apps/databinding/SimpleAdapter.java

Line 96 in 9741a8b

return newData != null ? previousData.length : 0;

Probably that's because there is similar method for previousData right before it:

Wrox-ProfessionalAndroid-4E/Snippets_ch5/app/src/main/java/com/professionalandroid/apps/databinding/SimpleAdapter.java

Line 91 in 9741a8b

return previousData != null ? previousData.length : 0;