OverlayEntry Using Progressbar Dialog In flutter

OverlayEntry Using Progressbar Dialog In flutter :

This flutter tutorial post is OverlayEntry using Progressbar dialog in flutter.

To insert the entry into an [Overlay], first find the overlay using [Overlay.of] and then call [OverlayState.insert]. To remove the entry, call [remove] on the overlay entry itself.

Property :

Loader.hide();
Loader.show(context);

loader.dart

import 'package:flutter/material.dart';

class Loader extends StatelessWidget {
  static OverlayEntry currentLoader;

  static void show(BuildContext context) {
    currentLoader = new OverlayEntry(
        builder: (context) => Stack(
              children: <Widget>[
                Container(
                  color: Color(0x99ffffff),
                ),
                Center(
                  child: Loader(),
                ),
              ],
            ));
    Overlay.of(context).insert(currentLoader);
  }

  static void hide() {
    currentLoader?.remove();
  }

  @override
  Widget build(BuildContext context) {
    return Center(
      child: CircularProgressIndicator(),
    );
  }
}

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