android-xml-views

name	android-xml-views
description	Implement ViewBinding, RecyclerView, and XML layouts correctly on Android. Use when changing XML view binding or RecyclerView behavior, including its item animations and layout managers; defer standalone animation or layout-manager questions unrelated to RecyclerView.
metadata	{"triggers":{"files":["layout/*.xml","**/*Binding.java","**/*Binding.kt"],"keywords":["ViewBinding","ConstraintLayout","RecyclerView"]}}

Android XML Views Standards

Priority: P1 (HIGH)

Implementation Guidelines

ViewBinding

• Standard: Use ViewBinding for all XML layouts.
• Synthetics: kotlin-android-extensions Dead. Remove it.
• KAPT: Avoid DataBinding unless strictly necessary (impacts build speed).

RecyclerView

• Adapter: Always inherit ListAdapter (wraps AsyncListDiffer).
• Updates: Provide proper DiffUtil.ItemCallback. NEVER call notifyDataSetChanged().

Layouts

• ConstraintLayout: Use for complex flat hierarchies.
• Performance: Avoid deep nesting (LinearLayout inside LinearLayout).

Anti-Patterns

• No findViewById: Deprecated. Use ViewBinding for all XML layouts.
• No kotlin-android-extensions: Deprecated. Remove all import kotlinx.android.synthetic.*.

References

• ViewBinding & Adapter