zmtzawqlp

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

void main() => runApp(new MyApp());

class MyApp extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => new MyAppState();
}

zmtzawqlp

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:pull_to_refresh_notification/pull_to_refresh_notification.dart';

class PullToRefreshHeader extends StatefulWidget {
  @override
  _PullToRefreshHeaderState createState() => _PullToRefreshHeaderState();
}

zmtzawqlp

import 'package:flutter/material.dart';

class CustomScrollBehavior extends ScrollBehavior {
  @override
  Widget buildViewportChrome(
      BuildContext context, Widget child, AxisDirection axisDirection) {
    // TODO: implement buildViewportChrome
    switch (getPlatform(context)) {
      case TargetPlatform.iOS:
        return child;