Flutter, image_picker showing nothing when pressed - flutter

Question

image_picker looks fine when i use it in emulator, when it's pressed it works properly but when i install it to my phone it does nothing when i pressed the button for image_picker no camera show just nothing change.
i think it has to be some persmission" things but i don't quite understand with it
method:
var selectedImagePath = ''.obs;
getImage(ImageSource ImageSource) async {
final pickedFile = await ImagePicker().pickImage(source: ImageSource);
if (pickedFile != null) {
selectedImagePath.value = pickedFile.path;
} else {
Get.snackbar('Error', 'No Image Selected');
}
}
display:
Scaffold(
body: SafeArea(
child: Column(
children: [
Obx(
() => Container(
width: double.infinity,
height: 400,
decoration: selectedImagePath == ''
? BoxDecoration(
color: Colors.grey,
)
: BoxDecoration(
color: Colors.grey,
image: DecorationImage(
image: FileImage(
File(
selectedImagePath.value,
),
),
fit: BoxFit.cover
),
),
),
),
SizedBox(height: 10),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
ElevatedButton(
onPressed: () {
getImage(ImageSource.camera);
},
child: Text('Take a photo'),
),
ElevatedButton(
onPressed: () {
getImage(ImageSource.gallery);
},
child: Text('Take from gallery'),
),
],
),
],
),
),
);

Answer 1

This works for me
File? _imageFile;
Future<void> getImage(
ImageSource source) async {
XFile? pickedFile = await ImagePicker()
.pickImage(source: source);
if (pickedFile != null) {
File selected = File(pickedFile.path);
_imageFile = selected;
}
}
Let me know if it works for you.

Answer 2

Here is my code, I'm using Provider Library to manage it.
Step 1:
//File? _image;
String? imgString;
ImagePicker? imagePicker = ImagePicker();
Step 2: Widget Code
Future getImage() async {
final dynamic image =
await imagePicker?.pickImage(source: ImageSource.gallery);
setState(() {
if (image != null) {
YourProvider.myImage = File(image.path);
YourProvider.pickedImage = true;
imgString = YourBaseUrl + YourProvider.myImage!.path;
debugPrint("Image: $imgString");
}
});
}
Step 3: Provider
bool pickedImage = false;
File? myImage;