How to listen to keyboard on screen Flutter?

Question

I am building a mobile app, I want to remove a widget when the keyboard appears on the screen, i.e when the input text field is on focus.

I have tried to use

Answer 1

The keyboard will automatically appear when the text field is focused. So you can add a listner to the focusnode to listen the focus change and hide respective widget.

Example:

    void _listener(){
        if(_myNode.hasFocus){
          // keyboard appeared 
        }else{
          // keyboard dismissed
        }
    }

    FocusNode _myNode = new FocusNode()..addListener(_listner);

    TextField _myTextField = new TextField(
            focusNode: _mynNode,
            ...
            ...
        );

    new Container(
        child: _myTextField
    );