# Hierarchy For Package io.flutter.util

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - io.flutter.util.HandlerCompat
  - io.flutter.util.PathUtils
  - io.flutter.util.Preconditions
  - io.flutter.util.TraceSection (implements java.lang.AutoCloseable)
  - io.flutter.util.ViewUtils

## Interface Hierarchy

- io.flutter.util.ViewUtils.DisplayUpdater
- io.flutter.util.ViewUtils.ViewVisitor