# Package io.flutter.util

package io.flutter.util

- Class
  Description
  HandlerCompat
  Compatability wrapper over `Handler`.
  PathUtils
  Preconditions
  Static convenience methods that help a method or constructor check whether it was invoked correctly (that is, whether its preconditions were met).
  Predicate<T>
  TraceSection
  ViewUtils
  ViewUtils.DisplayUpdater
  ViewUtils.ViewVisitor
  Allows to visit a view.