Upload image to Firebase Database

I'm having trouble uploading an image to Firebase Database with Android Studio, could it be uploaded by converting it first to String in this way?

private void cargarimagen(){
    Intent intent=new Intent(Intent.ACTION_PICK);
    intent.setType("image/");
    startActivityForResult(intent,GALLERY_INTENT);
}

public void imagencarga(View view) {
    cargarimagen();
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

     if(resultCode==RESULT_OK) {
        Uri path = data.getData();
        imagen.setImageURI( path );
        String pathIntent = path.toString();
       }
  }

If I can not imagine I would have to look with FirebaseStorage