how to upload images in server using flutter and laravel api? - laravel

Question

How to upload images in server using flutter with Laravel API? I tried using getx, its returning null. also I have image_picker and image_cropper package in my pubspec.yaml

Answer 1

Select Image from Gallery using File Picker
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:file_picker/file_picker.dart';
class ImageScreen extends StatefulWidget {
ImageScreen();
#override
State<ImageScreen> createState() => _ImageScreenState();
}
class _ImageScreenState extends State<ImageScreen> {
File file;
Future<File> uploadImage() async {
FilePickerResult result = await FilePicker.platform.pickFiles();
if (result != null) {
setState(() {
file = File(result.files.single.path);
});
print(result.files.single.path);
} else {
// User canceled the picker
}
return file;
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: GestureDetector(
onTap: () {
uploadImage();
},
child: Container(
color: Colors.green,
padding: EdgeInsets.all(5),
child: Text('Upload Image', style: TextStyle(fontSize: 16, color: Colors.white),)
),
),
);
}
}
Uploading Image to the server using http.multipartFile
static Future<dynamic> uploadImage({File file}) async {
try {
http.MultipartRequest request = new http.MultipartRequest("POST", _uri);
http.MultipartFile multipartFile = await http.MultipartFile.fromPath('file_name', file.path);
request.files.add(multipartFile);
var streamedResponse = await request.send();
var response = await http.Response.fromStream(streamedResponse);
if (response.statusCode == 200 ) {
return jsonDecode(response.body);
}
}
catch (e) {
return null;
}
}

Answer 2

final images = <File>[].obs;
Use this method for picking up images
Future pickImage(ImageSource source) async {
ImagePicker imagePicker = ImagePicker();
XFile pickedFile = await imagePicker.pickImage(source: source, imageQuality: 80);
File imageFile = File(pickedFile.path);
print(imageFile);
if (imageFile != null) {
images.add(imageFile);
} else {
Get.showSnackbar(GetSnackBar(message: "Please select an image file"));
}
}
Use this for uploading images to the server with your specific url.As I have used dio for uploading.You can use http as well.
Future<String> uploadImage(File file) async {
String fileName = file.path.split('/').last;
// you can edit it for your own convenience
var _queryParameters = {
'api_token': 'your token if required',
};
Uri _uri = 'Your base url'
var formData = FormData.fromMap({
"file": await MultipartFile.fromFile(file.path, filename: fileName),
});
var response = await dio.post(_uri, data: formData);
print(response.data);
if (response.data['data'] != false) {
return response.data['data'];
} else {
throw new Exception(response.data['message']);
}
}

Answer 3

This works for me, so maybe others might need it as well.
uploadImage(imageFile) async {
var stream = new http.ByteStream(
DelegatingStream.typed(imageFile.openRead()));
var length = await imageFile.length();
var uri = Uri.parse(
'http://192.168.5.196/ApiFileUploadTest/public/api/uploading-file-api');
var request = new http.MultipartRequest('POST', uri);
var multipartFile = new http.MultipartFile('file', stream, length,
filename: basename(imageFile.path));
request.files.add(multipartFile);
var response = await request.send();
print(response.statusCode);
response.stream.transform(utf8.decoder).listen((value) {
print(value);
});
}