【flutter】手動署名および保存
2852 ワード
1、プラグイン
2、テストページ
signature: ^2.0.0 #
2、テストページ
import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:signature/signature.dart';
class Autograph extends StatefulWidget {
@override
_AutographState createState() => _AutographState();
}
class _AutographState extends State {
var _signatureCanvas = Signature(
height: 300,
backgroundColor: Colors.lightBlueAccent,
);
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Builder(
builder: (context) => Scaffold(
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
//SIGNATURE CANVAS
_signatureCanvas,
//OK AND CLEAR BUTTONS
Container(
decoration: const BoxDecoration(
color: Colors.black,
),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
mainAxisSize: MainAxisSize.max,
children: [
//SHOW EXPORTED IMAGE IN NEW ROUTE
IconButton(
icon: const Icon(Icons.check),
color: Colors.blue,
onPressed: () async {
if (_signatureCanvas.isNotEmpty) {
var data = await _signatureCanvas.exportBytes();
print("::::"+data.toString());
Navigator.of(context).push(
MaterialPageRoute(
builder: (BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Container(
color: Colors.grey[300],
child: Image.memory(data),
),
);
},
),
);
}
},
),
//CLEAR CANVAS
IconButton(
icon: const Icon(Icons.clear),
color: Colors.blue,
onPressed: () {
setState(() {
return _signatureCanvas.clear();
});
},
),
],
)),
],
),
),
),
);
}
}