I was just building some UI in xml, and Lint gave me a warning and said to set android:baselineAligned to false to improve performance in ListView.
The docs for the Lint changes that added this warning say
Layout performance: Finds LinearLayouts with weights where you should
set android:baselineAligned="false" for better performance, and also
finds cases where you have nested weights which can cause performance
android:baselineAligned="false" , you're preventing the extra work your app's layout has to do in order to Align its children's baselines; which can obviously increase the performance. (Fewer unnecessary operations on UI => Better performance)