similar_img 0.0.2 similar_img: ^0.0.2 copied to clipboard
A new Flutter project.
import 'dart:typed_data';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:similar_img/entity.dart';
import 'package:similar_img/image_provider.dart';
import 'package:similar_img/similar_img.dart';
import 'package:similar_img/thumbnail.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key key}) : super(key: key);
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String _platformVersion = 'Unknown';
final _similarImgPlugin = SimilarImg();
final List<List<Uint8List>> _dataList = [];
final List<List<AssetEntity>> _assetEntityList = [];
final List<List<Map>> _mapList = [];
@override
void initState() {
super.initState();
initPlatformState();
}
// Platform messages are asynchronous, so we initialize in an async method.
Future<void> initPlatformState() async {
String platformVersion;
// Platform messages may fail, so we use a try/catch PlatformException.
// We also handle the message potentially returning null.
try {
platformVersion = await _similarImgPlugin.getPlatformVersion() ??
'Unknown platform version';
List<List<AssetEntity>> list =
await _similarImgPlugin.fectchSimilarArray();
for (var element in list) {
List<Map> mapList = [];
List<AssetEntity> assetEntityList = [];
for (var child in element) {
var map = {};
var id = child.id;
var width = child.width;
var height = child.height;
var option = ThumbnailOption.ios(size: ThumbnailSize(width, height));
map["id"] = id;
map["option"] = option.toMap();
mapList.add(map);
assetEntityList.add(child);
}
_mapList.add(mapList);
_assetEntityList.add(assetEntityList);
}
for (var list in _mapList) {
List<Uint8List> dataList = [];
for (var item in list) {
var data = await _similarImgPlugin.getThumb(item);
dataList.add(data);
}
_dataList.add(dataList);
}
// 查看第一个图的原图地址
final path =
await _similarImgPlugin.getOrigin(_assetEntityList.first.first.id);
if (kDebugMode) {
print("path=$path");
}
// 删除最后一个
final remove = await _similarImgPlugin.removeAeest(
_assetEntityList.last.last.id, _assetEntityList.last.last.typeInt);
if (kDebugMode) {
print("remove=$remove");
}
} on PlatformException {
platformVersion = 'Failed to get platform version.';
}
// 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(() {
_platformVersion = platformVersion;
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: CustomScrollView(
slivers: [
SliverToBoxAdapter(
child: Text('Running on: $_platformVersion\n'),
),
SliverList(
delegate: SliverChildBuilderDelegate(
(context, index) {
final item = _assetEntityList[index];
final data = _dataList[index];
return Container(
height: 200,
padding: const EdgeInsets.symmetric(vertical: 10),
child: GridView.builder(
physics: const AlwaysScrollableScrollPhysics(),
itemCount: item.length ?? 0,
scrollDirection: Axis.horizontal,
gridDelegate:
const SliverGridDelegateWithMaxCrossAxisExtent(
maxCrossAxisExtent: 200,
),
itemBuilder: (context, index) {
final entityChild = item[index];
final dataChild = data[index];
return Container(
color: Colors.grey[200],
child: Image(
image: AssetEntityImageProvider(
entityChild, dataChild),
),
);
},
),
);
},
childCount: _assetEntityList.length ?? 0,
),
),
],
),
),
);
}
}