/Shell/Bash/Flutter ui upload multiple image

Flutter ui upload multiple image

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

import 'package:multi_image_picker/multi_image_picker.dart';

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {
  List<Asset> images = List<Asset>();
  String _error;

  @override
  void initState() {
    super.initState();
  }

  Widget buildGridView() {
    if (images != null)
      return GridView.count(
        crossAxisCount: 3,
        children: List.generate(images.length, (index) {
          Asset asset = images[index];
          return AssetThumb(
            asset: asset,
            width: 300,
            height: 300,
          );
        }),
      );
    else
      return Container(color: Colors.white);
  }

  Future<void> loadAssets() async {
    setState(() {
      images = List<Asset>();
    });

    List<Asset> resultList;
    String error;

    try {
      resultList = await MultiImagePicker.pickImages(
        maxImages: 300,
      );
    } on Exception catch (e) {
      error = e.toString();
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      images = resultList;
      if (error == null) _error = 'No Error Dectected';
    });
  }

  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        appBar: new AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Column(
          children: <Widget>[
            Center(child: Text('Error: $_error')),
            RaisedButton(
              child: Text("Pick images"),
              onPressed: loadAssets,
            ),
            Expanded(
              child: buildGridView(),
            )
          ],
        ),
      ),
    );
  }
}

Source: stackoverflow.com

Similar codes

0 vote69 views1 answer
Postgres change deafult encode
Shell/Bash
1 vote120 views1 answer
Fork from github to gitlab
Shell/Bash
1 vote107 views1 answer
Bash print line if column value is in column of another file
Shell/Bash
0 vote116 views1 answer
Bash add default argument
Shell/Bash
0 vote119 views1 answer
How to hide hostname mac terminal
Shell/Bash
0 vote106 views1 answer
How to increase font size in elementary os
Shell/Bash
0 vote122 views1 answer
Check if global packages are up to date
Shell/Bash
0 vote126 views2 answers
Git reset head 2 commits
Shell/Bash
6 votes120 views4 answers
Git diff
Shell/Bash
1 vote111 views1 answer
Wondershaper
Shell/Bash