imagepicker flutter cant be used-CodePudding

im new in flutter and i made a project using this, i have a problem that
when i want to use imagepicker it couldn't be used i have following step by step on youtube and i getting error on

"File imageFile; says non-nullable instance field ' imageFile' must be initialized."

and on "Pickedfile.path says the propety 'path' can't be unconditionally accessed because the receiver can be 'null'."

this is my writed code

  File imageFile;
  final picker = ImagePicker();

  chooseImage(ImageSource source) async {
    final PickedFile = await picker.pickImage(source: source);

    setState(() {
      imageFile = File(PickedFile.path);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        leading: IconButton(
          onPressed: () {},
          icon: Icon(Icons.exit_to_app),
        ),
      ),
      body: SingleChildScrollView(
        child: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.start,
            children: <Widget>[
              Container(
                  child: imageFile != null
                      ? Container(
                          height: 120.0,
                          width: 120.0,
                          decoration: BoxDecoration(
                              image: DecorationImage(
                            image: FileImage(imageFile),
                          )),
                        )
                      : Container(
                          height: 120.0,
                          width: 120.0,
                          decoration: BoxDecoration(color: Colors.blue),
                        )),
              Container(
                child: Padding(
                  padding: EdgeInsets.fromLTRB(0, 0, 0, 0),
                  child: ElevatedButton(
                    onPressed: () {
                      chooseImage(ImageSource.gallery)
                    },
                    child: Text('Ubah Foto Profil'),
                  ),
                ),
              ),

CodePudding user response：

This is because you are initializing file path with null give some value and than change it using setstate()

CodePudding user response：

Let me know if it works for you.

 ImagePicker picker = ImagePicker();
 File imageFile;

  Future chooseImage(ImageSource source) async {
    var pickedFile = (await picker.pickImage(source: source));
    File selected = File(pickedFile.path);

    imageFile = selected;

  }