i am using FormBuilderImagePicker from package Flutter form builder
I want to use the img path but i am not able to do so
sending() async {
var storageimage =
FirebaseStorage.instance.ref().child('/google/google');
var task = storageimage.putFile();
imgurl = await (await task.onComplete).ref.getDownloadURL();
// await Firestore.instance.collection('twst').add(
// {
// 'img': imgurl.toString(),
// },
// );
}
i want to use that function with the imagepicker
but the problem is i am not able to find path to use putfile
To get the path of the FormBuilderImagePicker, the toString() method of the class prints the path.
Here is an example of how you can print in a container the Text field including FormBuilderImagePicker which have the path.
Then you will need to pass the image or file to the putFile method.
You can also use the ImagePicker pickImage class method to get the file.
sending() async {
File image;
try {
//Get the file from the image picker and store it
image = await ImagePicker.pickImage(source: ImageSource.gallery);
// Throws error when you don't select any image or when you don't have permissions
} on PlatformException catch (e) {
return;
}
//Create a reference to the location you want to upload to in firebase
StorageReference reference = FirebaseStorage.instance.ref().child("/google/google");
//Upload the file to Firebase
StorageUploadTask uploadTask = reference.putFile(image);
StorageTaskSnapshot taskSnapshot = await uploadTask.onComplete;
// Waits till the file is uploaded then stores the download URL
String url = await taskSnapshot.ref.getDownloadURL();
}
Related
In my flutter app, if the user is signing in for the first time, he will be directed to profile page where he gets to key in his personal details and upload his profile pic. now my issue is with the profile pic. First of all, Im using Image picker package.
Future pickImage(ImageSource source) async {
try {
final image = await ImagePicker().pickImage(
source: source);
if (image == null) return;
final UserImage = File(image.path);
setState(() => this.image = UserImage );
}on PlatformException catch (e){
Utils.showSnackBar(e.message);
}
}
But with this code alone, everytime the app gets restarted the image will be null. So I tried to upload the image to the Firebase Storage when the user picks an image and generate a url:
Future uploadImage () async {
FirebaseStorage storage = FirebaseStorage.instance;
Reference ref = storage.ref().child(userID.toString());
UploadTask uploadTask = ref.putFile(image!);
uploadTask.whenComplete(() async {
url = await ref.getDownloadURL(); }
).catchError((onError){
print(onError);
});
return url;
}
But again every time I restart the app, the url will be null.
What is the best way to save the image permenantly when the user signs in for the first time.
edit: I want to store the image locally so that the user doesnt need an internet connection to load the image everytime he open the app.
Your answers and responses are highly appreciated.
you need to get folder directory first
Future<String> getStorageDirectory() async {
if (Platform.isAndroid) {
return (await getExternalStorageDirectory()).path;
} else {
return (await getApplicationDocumentsDirectory()).path;
}
}
Add image in path
uploadImage() async{
String dir= getStorageDirectory();
File directory = new File("$dir");
if (directory.exists() != true) {
directory.create();
}
final image = await ImagePicker().pickImage(
source: source);
if (image == null) return;
final userImage = File(image.path);
var newFile = await userImage.writeAsBytes(/* image bytes*/);
await newFile.create();
}
Description:
I'm using (image_picker: ^0.8.5+3) package to pick the images from gallery and camera and then upload them on backend server (django by using django rest framework)
Issue:
Image is getting null outside picker function, even though state has been set by using setSatet(() {}) method
Failed Solutions:
I tried to save the image locally before uploading the image on the backend, But image still shown null once its used or referenced outside picker function
Note: backend API's works fine and i can upload images by using postman
picker function:
// Get image from gallery and store it locally
Future<File?> _getFromGallery() async {
PickedFile? image = await ImagePicker.platform.pickImage(source: ImageSource.gallery);
if (image == null) {
return null;
}
final File file = File(image.path);
final Directory directory = await getApplicationDocumentsDirectory();
final imagepath = directory.path;
final String fileName = path.basename(image.path);
File newImage = await file.copy('$imagepath/$fileName');
setState(() {
_imagelocal = newImage;
print('image.path1');
print(_imagelocal!.path);
});
}
Uploading image function:
_uploadimage() async {
Map<String,String> header = {
"Content-Type":"application/octet-stream)"
};
print("uploaded image invoked");
var request = http.MultipartRequest('POST', Uri.parse('http://192.168.1.15:8000/api/uploadimage'));
// request.files.add(await http.MultipartFile('image',http.ByteStream(image.openRead()).cast(),await image.length(),filename:image.name, contentType: MediaType('image', 'jpg')));
request.files.add(await http.MultipartFile('LoadModelImage',http.ByteStream(_imagelocal!.openRead()).cast(),await _imagelocal!.length(),));
request.headers.addAll(header);
//for completeing the request
var response =await request.send();
//for getting and decoding the response into json format
var responsed = await http.Response.fromStream(response);
final responseData = json.decode(responsed.body);
if (response.statusCode==201) {
print("SUCCESS");
print(responseData);
}
else {
print("ERROR");
}
}
in my flutter app, the user picture is loaded by Cached Network image command, which gets its url by stream builder from firestore.
I am trying to add the functionality to the user of changing his pic by pressing on the pic as following:
Selecting his pic with image picker.
upload it to firebase storage.
updating firestore usercollection document with new image url.
I created the below code.
The problem is getDownloadURL() is not returning actual string, but "Instance of 'Future'".
so the new link stored in firestore is not correct to be used by Cached Network Image.
how can I get the actual URl String?
My Future Function Code:
Future ChangeProfilePic() async {
String newimageurl = "";
FirebaseStorage storage = FirebaseStorage.instance;
Reference ref =
storage.ref().child("ProfileImages/$globaluserid".toString());
CollectionReference userscollectionref =
FirebaseFirestore.instance.collection('UsersCollection');
final ImagePicker _picker = ImagePicker();
final XFile? image = await _picker.pickImage(source: ImageSource.gallery);
File imagefile = File(image!.path);
UploadTask uploadTask = ref.putFile(imagefile);
uploadTask.whenComplete(() {
newimageurl = ref.getDownloadURL().toString();
print("Image Uploaded");
userscollectionref
.doc(globaluserid)
.update({'User_image_link': newimageurl});
print("Link is Updated");
}).catchError((onError) {
print("Error");
print(onError);
});
}
Like many calls in your code `` is an asynchronous call, whose result won't be available immediately, so it returns a Future that will at some point contain the value. You can use await to wait for such a Future to complete and get its value, similar to what you already do in await _picker.pickImage.
await ref.getDownloadURL().toString();
Another change to consider is that putFile returns a Task, but that is actually also a Future, which means that you can await that too.
Combining these two fact, you can simplify your code to:
final XFile? image = await _picker.pickImage(source: ImageSource.gallery);
File imagefile = File(image!.path);
await ref.putFile(imagefile);
newimageurl = (await ref.getDownloadURL()).toString();
print("Image Uploaded");
userscollectionref
.doc(globaluserid)
.update({'User_image_link': newimageurl});
print("Link is Updated");
I am using the firebase_storage: ^8.0.6 package on flutter web. I want to upload image to firebase storage that I get using FilePicker package.
The problem is that the new package uses the putFile() method to upload files. But File from dart:io doesn't work on flutter web and it also doesn't accept the File object from dart:html.
I can upload image as Blob using the putBlob() method but then it doesn't upload it as image type but it's type is application/octet-stream. I don't want to upload the image file as a blob.
Future<String> uploadImage(PlatformFile file) async {
try {
TaskSnapshot upload = await FirebaseStorage.instance
.ref(
'events/${file.name}-${DateTime.now().toIso8601String()}.${file.extension}')
.putBlob(Blob(file.bytes));
String url = await upload.ref.getDownloadURL();
return url;
} catch (e) {
print('error in uploading image for : ${e.toString()}');
return ';
}
}
How to fix this issue?
You can use the putData() method to send the image and set it's metadata as a image.
Future<String> uploadImage(PlatformFile file) async {
try {
TaskSnapshot upload = await FirebaseStorage.instance
.ref(
'events/${file.path}-${DateTime.now().toIso8601String()}.${file.extension}')
.putData(
file.bytes,
SettableMetadata(contentType: 'image/${file.extension}'),
);
String url = await upload.ref.getDownloadURL();
return url;
} catch (e) {
print('error in uploading image for : ${e.toString()}');
return '';
}
}
putData() method takes Uint8List by default.
Uploading images using TaskSnapshot is not working on my flutter web project.
I used firebase_storage: ^8.1.3 .
Following code is working for my web project.
String nameImage = DateTime.now().millisecondsSinceEpoch.toString();
Reference _reference = FirebaseStorage.instance
.ref()
.child('images/$nameImage.png}');
await _reference
.putData(
await image.readAsBytes(),
SettableMetadata(contentType: 'image/jpeg'),
)
.whenComplete(() async {
await _reference.getDownloadURL().then((value) {
user.profilePictureURL = value;
FireStoreUtils.firestore
.collection(USERS)
.doc(user.userID)
.update({'profilePictureURL': user.profilePictureURL});
});
});
You can still use .putFile when you use the File.fromUri() constructor and get the Uri from the PlatformFile object using Uri.dataFromBytes and passing the bytes to it.
The code below contains changes that should remove the error:
TaskSnapshot upload = await FirebaseStorage.instance
.ref(
'events/${file.name}-${DateTime.now().toIso8601String()}.${file.extension}')
.putFile(File.fromUri(Uri.dataFromBytes(file.bytes.toList())));
The Following Code is used to Upload any image from gallery/Camera to Firebase storage. I was successful in uploading the image to storage along with meta data. Now the problem is I am not able to get the download URL of the uploaded image. Tried a lot but didn't find any solution.
FirebaseStorage storage = FirebaseStorage.instance;
final picker = ImagePicker();
PickedFile pickedImage;
File imageFile;
Future<void> _upload(String inputSource) async {
try {
pickedImage = await picker.getImage(
source: inputSource == 'camera'
? ImageSource.camera
: ImageSource.gallery,
maxWidth: 1920);
final String fileName = path.basename(pickedImage.path);
imageFile = File(pickedImage.path);
try {
// Uploading the selected image with some custom meta data
await storage.ref(fileName).putFile(
imageFile,
SettableMetadata(
customMetadata: {
'uploaded_by': 'A bad guy',
'description': 'Some description...'
},
),
);
// Refresh the UI
setState(() {});
} on FirebaseException catch (error) {
print(error);
}
} catch (err) {
print(err);
}
}
Hope You're Doing Well …
You Can Try This Method To Get The URL Of The Image(Any File) From Firebase Storage To Firebase Store And Then You Can Retrieve Image .
class _UploadAdState extends State<UploadAdPage> {
final formKey = GlobalKey<FormState>();
File _myimage;
String imgUrl;
Future getImage1(File chosenimage) async {
PickedFile img =
await ImagePicker.platform.pickImage(source: ImageSource.gallery);
if (chosenimage == null) return null;
File selected = File(img.path);
setState(() {
_myimage = chosenimage;
});
}
// changing the firestore rules and deleteing if request.auth != null;
sendData() async {
// to upload the image to firebase storage
var storageimage = FirebaseStorage.instance.ref().child(_myimage.path);
UploadTask task1 = storageimage.putFile(_myimage);
// to get the url of the image from firebase storage
imgUrl1 = await (await task1).ref.getDownloadURL();
// you can save the url as a text in you firebase store collection now
}
}
I am using in my app this function. Pass image file and download with getDownloadUrl .
Future <String> _uploadphotofile(mFileImage) async {
final Reference storageReference = FirebaseStorage.instance.ref().child("products");
UploadTask uploadTask = storageReference.child("product_$productId.jpg").putFile(imgfile);
String url = await (await uploadTask).ref.getDownloadURL();
return url;
}