I have created a PickImages class which can takes images both from camera and gallery like below. Now I want to post the images as base64 string to a json api server.
Here is PickImages class.
import 'dart:convert';
import 'dart:developer';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
//import 'services/services.dart';
class PickImages extends StatefulWidget {
@override
_PickImagesState createState() => _PickImagesState();
}
class _PickImagesState extends State<PickImages> {
List<Object> images = List<Object>();
Future<File> _imageFile;
bool _isVisible = false;
Future _onAddImageClick(int index, int type) async {
if (images != null)
setState(() {
// ignore: deprecated_member_use
_imageFile = ImagePicker.pickImage(
source: type == 1 ? ImageSource.camera : ImageSource.gallery,
imageQuality: 50,
);
getFileImage(index);
});
}
void getFileImage(int index) async {
_imageFile.then((file) async {
setState(() {
ImageUploadModel imageUpload = new ImageUploadModel();
imageUpload.imageFile = file;
images.replaceRange(index, index + 1, [imageUpload]);
});
});
}
void showImageBox() {
setState(() {
_isVisible = !_isVisible;
});
}
@override
void initState() {
super.initState();
setState(() {
images.add("Add Image");
images.add("Add Image");
images.add("Add Image");
images.add("Add Image");
images.add("Add Image");
images.add("Add Image");
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Post Images'),
),
body: Column(
children: <Widget>[
Container(
//padding: EdgeInsets.only(right: 5),
child: Card(
elevation: 5,
child: ListTile(
trailing: Icon(Icons.attachment),
title: Text('Attachments'),
onTap: () {
showImageBox();
},
),
),
),
Visibility(
visible: _isVisible,
child: Padding(
padding: const EdgeInsets.only(top: 5.0, right: 5.0),
child: GridView.count(
shrinkWrap: true,
crossAxisCount: 3,
childAspectRatio: 1,
children: List.generate(images.length, (index) {
if (images[index] is ImageUploadModel) {
ImageUploadModel uploadModel = images[index];
//base64 image
List<int> imageBytes =
uploadModel.imageFile.readAsBytesSync();
String base64Image = base64Encode(
imageBytes); //'base64Image' holds the base64 image string
return Card(
clipBehavior: Clip.antiAlias,
child: Stack(
children: <Widget>[
Image.file(
uploadModel.imageFile,
fit: BoxFit.cover,
width: 300,
height: 300,
),
Positioned(
right: 5,
top: 5,
child: InkWell(
child: Icon(
Icons.remove_circle,
size: 20,
color: Colors.red,
),
onTap: () {
setState(() {
images.replaceRange(
index, index + 1, ['Add Image']);
});
},
),
),
RaisedButton(
child: Text('imgInfo'),
onPressed: () {
print(
"${uploadModel.imageFile.lengthSync() / 1024} KB"); //print image size in kb
print(uploadModel
.imageFile.path); //print image path
log(base64Image);
},
),
],
),
);
} else {
return Card(
child: IconButton(
icon: Icon(Icons.camera_alt),
onPressed: () {
showModalBottomSheet(
context: context,
builder: (BuildContext context) {
return SafeArea(
child: Container(
child: new Wrap(
children: <Widget>[
new ListTile(
leading: new Icon(Icons.photo_camera),
title: new Text('Camera'),
onTap: () {
_onAddImageClick(index, 1);
Navigator.of(context).pop();
},
),
new ListTile(
leading:
new Icon(Icons.photo_library),
title: new Text('Gallery'),
onTap: () {
_onAddImageClick(index, 2);
Navigator.of(context).pop();
}),
],
),
),
);
},
);
},
),
);
}
}),
),
),
),
RaisedButton(
child: Text('send'),
onPressed: () {
//postImage(base64Image);
},
),
],
),
);
}
}
class ImageUploadModel {
File imageFile;
ImageUploadModel({
this.imageFile,
});
}
Here is ImageModel.
class ImageModel {
String attachment;
ImageModel({this.attachment});
ImageModel.fromJson(Map<String, dynamic> json) {
attachment = json['Attachment'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['Attachment'] = this.attachment;
return data;
}
}
Here is services.dart where in "Attatchment" : " " I have to sent the base64 images string.
import 'dart:convert';
import 'dart:async';
import 'package:http/http.dart' as http;
import 'package:post_image/model/model.dart';
Future<ImageModel> postImage() async {
Map data = {
"Attachment": ""
};
var body = json.encode(data);
final http.Response response = await http.post(
'url',
body: body,
);
print(response.body);
print(body);
if (response.statusCode == 200) {
return ImageModel.fromJson(
jsonDecode(response.body),
);
} else {
throw Exception('Failed to send');
}
}
