Teso_Mobile/lib/Pages/Sub_Pages/Explore/Trending/AllTrending.dart

import 'package:teso/Classes/API%20Clasess/Product.dart';
import 'package:teso/Pages/PageWidgets/Explore/products.dart';
import 'package:flutter/material.dart';
import 'package:flutter_staggered_grid_view/flutter_staggered_grid_view.dart';

class TrendingAll extends StatefulWidget {
  final List<Product> products;

  const TrendingAll({Key key, this.products}) : super(key: key);
  @override
  _TrendingAllState createState() => _TrendingAllState();
}

class _TrendingAllState extends State<TrendingAll> {
  ScrollController _controller;
  List<Product> show = [];
  int count = 0;

  Future<void> fetchImages() async {
    try {
      count = show.length;
      for (int i = 0; i <= 9; i++) {
        if (widget.products.length > count)
          setState(() {
            show.add(widget.products.elementAt(count));
            count++;
            imageCache.clear();
          });
      }
    } catch (e) {
      print(e);
    }
  }

  void _scrollListener() {
    if (_controller.offset >= _controller.position.maxScrollExtent &&
        !_controller.position.outOfRange) {
      fetchImages();
    }
  }

  @override
  void initState() {
    _controller = ScrollController();
    _controller.addListener(_scrollListener);
    count = 0;
    fetchImages();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        automaticallyImplyLeading: true,
        title: Text("Trending Products"),
      ),
      body: StaggeredGridView.count(
        controller: _controller,
        crossAxisCount: 2,
        children: List.generate(show.length, (int index) {
          return index % 2 == 0
              ? buildProducts(context, show.elementAt(index))
              : buildProducts(context, show.elementAt(index));
        }),
        staggeredTiles: List.generate(
          show.length,
          (int index) {
            return StaggeredTile.fit(1);
          },
        ),
      ),
    );
  }
}