I am trying to get a image using camera in flutter using image picker but i am getting an error
lib/Screen/AllDocuments.dart:15:3: Error: 'File' isn't a type.
File _image;
I have also tried to cast but still it is not working
File _image;
final picker = ImagePicker();
Future getImage() async {
final pickedFile = await picker.getImage(source: ImageSource.camera);
setState(() {
_image = File(pickedFile);
});
}
How to fix this error
You have to call the .path method on the pickedFile.
See this documentation here => Image Picker
Use this :
File _image;
final picker = ImagePicker();
Future getImage() async {
final pickedFile = await picker.getImage(source: ImageSource.camera);
setState(() {
_image = File(pickedFile.path);
});
}
Related
I am working on flutter to upload images to the SQL server but there is a error :
type 'Null' is not a subtype of type 'File' of 'function result'
here is how I am initialising the file:
late File _image;
final picker=ImagePicker();
Future choiceImage() async{
var pickedImage= await picker.getImage(source: ImageSource.gallery);
setState(() {
_image=File(pickedImage!.path);
});
}
Future choice2Image() async{
var pickedImage= await picker.getImage(source: ImageSource.camera);
setState(() {
_image=File(pickedImage!.path);
});
}
and getting this image by :
var pic =await http.MultipartFile.fromPath("image", _image.path);
and dont know what is the issue ?
ImagePicker can return a null value if you don't pick any image from the image picker sheet. Therefore, you need to handle null values.
This is what you can do.
File? _image;
final picker=ImagePicker();
Future choiceImage() async{
var pickedImage= await picker.getImage(source: ImageSource.gallery);
if(pickedImage!=null)
{
setState(()
{
_image=File(pickedImage!.path);
});
}
}
Instead of using late File _image;
you can try using:
File? _image;
I am using image_picker: ^0.8.4+4 where I am getting this error. what I can do to make this code right?
late File selectedImage;
bool _isLoading = false;
CrudMethods crudMethods = CrudMethods();
Future getImage() async {
var image = await ImagePicker().pickImage(source: ImageSource.gallery);
setState(() {
selectedImage = image; //A value of type 'XFIle' can't be assigned to a variable of type 'File' error.
});
}
uploadBlog() async {
// ignore: unnecessary_null_comparison
if (selectedImage != null) {
setState(() {
_isLoading = true;
});
you can conver XFile to File using following line:
selectedImage = File(image.path);
First, you should create your variable as XFile
Because this is what you get from image picker.
XFile photo;
void _pickImage() async {
final ImagePicker _picker = ImagePicker();
photo = await _picker.pickImage(source: ImageSource.camera);
if (photo == null) return;
}
And then you can use your image as a file image.
Image.file(File(photo.path))
This happens because the package (image_picker ) you are using is relying on XFile and not File, as previously did.
So, first you have to create a variable of type File so you can work with later as you did, and after fetching the selectedImage you pass the path to instantiate the File. Like this:
File? selectedImage;
bool _isLoading = false;
CrudMethods crudMethods = CrudMethods();
Future getImage() async {
var image = await ImagePicker().pickImage(source: ImageSource.gallery);
setState(() {
selectedImage = File(image!.path); // won't have any error now
});
}
//implement the upload code
XFile and File can be converted to each other like the following in Flutter:
import 'dart:io';
import 'package:camera/camera.dart';
XFile takenPhotoXFile = await _controller!.takePicture();
// XFile to File
File photoAsFile = File(takenPhotoXFile.path);
// File to XFile
XFile imageFileAsXFile = XFile(photoAsFile.path);
After the update in Image_Picker, "XFile" is used instead of "File" and "pickImage(...)" is used instead of "getImage(...)".
await _picker.pickImage(source: ImageSource.camera)
this code now returns XFile.
Related codes are below
XFile _image;
final ImagePicker _picker = ImagePicker();
Future getImageFromCamera() async {
final pickedFile = await _picker.pickImage(source: ImageSource.camera);
setState(() {
if (pickedFile != null) {
_image = pickedFile;
} else {
print("No image selected");
}
});
}
Future<void> uploadImageToStorage(XFile imageFile) async {
String imageName = "${AuthService().getCurrentUID()}";
FirebaseStorage.instance
.ref()
.child("photos")
.child(imageName)
.putFile(_image);
}
error
The argument type 'XFile' can't be assigned to the parameter type 'File'.
I can't write "_image" in putFile(...). It asks me for "File" type. But _image is of type "XFile".
How can I upload an image into Firebase Storage?
import 'dart:io' as i;
Future<void> uploadImageToStorage(XFile imageFile) async {
String imageName = "${AuthService().getCurrentUID()}";
FirebaseStorage.instance
.ref()
.child("photos")
.child(imageName)
.putFile(i.File(_image.path));
}
You need to convert it into a file object using File from the XFile's path.
I was using the following code to pick images from both Camera and Gallery.
Future<File> getImageFromGallery() async {
final pickedFile = await picker.getImage(source: ImageSource.gallery);
_image = File(pickedFile.path);
return _image; }
Future<File> getImageFromCamera() async {
final pickedFile = await picker.getImage(source: ImageSource.camera);
_image = File(pickedFile.path);
return _image; }
Used Package
import 'package:image_picker/image_picker.dart';
Everything was perfect until I updated flutter to version 1.22.1
After that when I pickup an image the app crashes without any specific error, all I got is
Lost connection to device
Thanks
I am attempting to cast an Image to a File in Flutter. Is there a method for this?
This is how to pick an image as a file
File _image;
Future getImage() async {
final pickedFile = await picker.getImage(source: ImageSource.gallery);
setState(() {
_image = File(pickedFile.path);
});
}
Also We can convert this image as Bytestream
var convertedImage;
Future getImage() async {
final pickedFile = await picker.getImage(source: ImageSource.gallery);
convertedImage = await pickedFile.readAsBytes();
convertedImage = await decodeImageFromList(convertedImage);
setState(() {
convertedImage = convertedImage;
});
}
Hope this helps!