Flutter image_picker "'PickedFile'" can't be assigned to the parameter type 'File' - image

Question

I'm calling a widget in my code to display the selected image through image-picker plugin; following is my code:
Widget _imagePlaceHolder() {
if (imageSelected == null){
return Text("No File Selected!!");
} else {
Image.file(imageSelected, width: 400, height: 400);
}
}
but I'm getting this error:
The argument type "'PickedFile'" can't be assigned to the parameter type 'File'
on imageSelected under else statement.
I'm picking an image like this from gallery:
Future _openGallery(BuildContext context) async {
var picture = await picker.getImage(source: ImageSource.gallery);
this.setState(() {
imageSelected = picture;
});}
I've defined:
PickedFile imageSelected;
final picker = ImagePicker();
what's going wrong here? Please help..

Answer 1

Image.file() accepts a property of type File class, whereas the ImagePicker().getImage() method returns a type PickedFile.
We have to utilise the getter .path of the returned PickedFile argument and pass that file path to the create a File object as follows:
void _setImage() async {
final picker = ImagePicker();
PickedFile pickedFile = await picker.getImage(source: ImageSource.gallery);
imageFile = File(pickedFile.path);
}
This may be done in one line as follows:
void _setImage() async {
imageFile = File(await ImagePicker().getImage(source: ImageSource.gallery).then((pickedFile) => pickedFile.path));
}
After this, you can use the variable imageFile and pass it inside Image.file() like Image.file(imageFile), or FileImage() like FileImage(imageFile) as required.
For more, see the image_picker documentation on pub.dev

Answer 2

//many time when user import dart.html package than it throw error so keep note that we have to import dart.io
import 'dart.io';
final imagePicker = ImagePicker();
File imageFile;
Future getImage() async {
var image = await imagePicker.getImage(source: ImageSource.camera);
setState(() {
imageFile = File(image.path);
});
}

Answer 3

Change PickedFile imageSelected to File imageSelected and use ImagePicker.pickImage(source: ImageSource.gallery) instead of picker.getImage(source: ImageSource.gallery);

Answer 4

import 'package:image_picker/image_picker.dart';
import 'dart:io';
var image;
void imagem() async {
PickedFile picked = await ImagePicker().getImage(
preferredCameraDevice: CameraDevice.front, source: ImageSource.camera);
setState(() {
image = File(picked.path);
});
}
Or case you need of code full:
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
class Photos extends StatefulWidget {
#override
_PhotosState createState() => _PhotosState();
}
class _PhotosState extends State<Photos> {
var image;
void imagem() async {
PickedFile picked = await ImagePicker().getImage(
preferredCameraDevice: CameraDevice.front, source: ImageSource.camera);
setState(() {
image = File(picked.path);
});
}
#override
Widget build(BuildContext context) {
return SingleChildScrollView(
child: Center(
child: Column(
children: [
RaisedButton(
onPressed: imagem,
child: Text("Imagem"),
),
image != null ? Image.file(image) : Text("I")
],
),
));
}
}

Answer 5

Morpheus answer is correct.
Just pass in the PickedFile variable path to File().
Example:
final picker = ImagePicker();
PickedFile pickedFile = await picker.getImage(source: ImageSource.gallery);
imageFile = File(pickedFile.path);

Answer 6

Try converting your imageFile type to PickedImage and return the file in type Casting the imageFile to File, Like:-
// Declaring the variable here
PickedImage imageFile;
And at the time of returning:-
return Image.file(File(imageFile.path),width: 400,height: 400,);
I personally faced this problem, and this solution solved it.

Answer 7

Try this way...
Future pickImageFromGallery() async {
try {
final pickedFile = await picker.pickImage(
source: ImageSource.gallery,
);
setState(() {
widget.imageFile = File(pickedFile!.path);
});
if (pickedFile == null) {
throw Exception('File is not available');
}
} catch (e) {
print(e);
}