/
main.dart
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/
main.dart
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import 'dart:io';
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:media_selector/media_selector.dart';
import 'package:media_selector_example/ui_adapter_config.dart';
import 'package:video_thumbnail/video_thumbnail.dart';
void main() {
InnerWidgetsFlutterBinding.ensureInitialized()
..attachRootWidget(MyApp())
..scheduleWarmUpFrame();
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String path;
Uint8List uint8List;
int max = 5;
List<Media> list = [];
List<String> selectList = [];
@override
void initState() {
MediaSelector.color('#449897');
super.initState();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: GridView.builder(
padding: EdgeInsets.symmetric(horizontal: 15),
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 4,
mainAxisSpacing: 10,
crossAxisSpacing: 10,
childAspectRatio: 1,
),
itemCount: list.length < max ? list.length + 2 : max + 1,
itemBuilder: (context, index) {
if (index == 0) {
return Container(
width: 78,
height: 78,
child: Stack(
children: <Widget>[
Align(
alignment: Alignment.bottomLeft,
child: uint8List == null
? GestureDetector(
behavior: HitTestBehavior.opaque,
child: Container(
decoration: BoxDecoration(
border: Border.all(color: Color(0xFFDCDCDC)),
borderRadius: BorderRadius.circular(4),
),
width: 70,
height: 70,
child: Column(
children: <Widget>[
SizedBox(height: 8),
Image.asset('images/media_video.png', width: 30, height: 30),
Text('添加视频', style: TextStyle(color: Color(0xFFBDBDBD), fontSize: 12)),
],
),
),
onTap: selectVideo,
)
: GestureDetector(
behavior: HitTestBehavior.opaque,
child: Container(
width: 70,
height: 70,
child: Stack(
children: <Widget>[
Image.memory(uint8List, width: 70, height: 70, fit: BoxFit.cover),
Container(
alignment: Alignment.center,
color: Colors.black.withOpacity(0.38),
child: Image.asset('images/media_play.png', width: 22, height: 22),
),
],
),
),
onTap: () => MediaSelector.previewVideo(path),
),
),
Visibility(
visible: uint8List != null,
child: Align(
alignment: Alignment.topRight,
child: GestureDetector(
behavior: HitTestBehavior.opaque,
child: Image.asset('images/media_delete.png', width: 20, height: 20),
onTap: () {
setState(() {
path = null;
uint8List = null;
});
},
)),
),
],
),
);
}
if (list.length < max && index == list.length + 1) {
return Container(
width: 78,
height: 78,
child: Stack(
children: <Widget>[
Align(
alignment: Alignment.bottomLeft,
child: GestureDetector(
behavior: HitTestBehavior.opaque,
child: Container(
decoration: BoxDecoration(
border: Border.all(color: Color(0xFFDCDCDC)),
borderRadius: BorderRadius.circular(4),
),
width: 70,
height: 70,
child: Column(
children: <Widget>[
SizedBox(height: 8),
Image.asset('images/media_picture.png', width: 30, height: 30),
Text(list.isEmpty ? '选择图片' : '${list.length} / $max', style: TextStyle(color: Color(0xFFBDBDBD), fontSize: 12)),
],
),
),
onTap: selectPictures,
),
),
],
),
);
}
return Container(
width: 78,
height: 78,
child: Stack(
children: <Widget>[
Align(
alignment: Alignment.bottomLeft,
child: GestureDetector(
child: Image.file(File(list[index - 1].compressPath), width: 70, height: 70, fit: BoxFit.cover),
onTap: () => MediaSelector.previewPicture(selectList, index - 1),
),
),
Align(
alignment: Alignment.topRight,
child: GestureDetector(
child: Image.asset('images/media_delete.png', width: 20, height: 20),
onTap: () {
setState(() {
list.removeAt(index - 1);
selectList.removeAt(index - 1);
});
},
),
),
],
),
);
},
),
),
);
}
selectVideo() async {
var list = await MediaSelector.select(type: PictureMimeType.ofVideo);
path = list[0].path;
uint8List = await VideoThumbnail.thumbnailData(
video: path,
imageFormat: ImageFormat.PNG,
maxWidth: 210,
quality: 50,
);
setState(() {});
}
selectPictures() {
MediaSelector.select(type: PictureMimeType.ofImage, max: max, compress: true, selectList: selectList).then((value) {
list.clear();
selectList.clear();
setState(() {
list.addAll(value);
list.forEach((media) {
selectList.add(media.path);
});
});
});
}
}