i get this error when i try to use Future builder and snapshot even the Json File is ok

Question

the value return null I don not know why that I test The Function getnote() also it give me "fail"

Answer 1

Almost surely the first snapshot will contain do data because the future is still running. Check if the snapshot has data, and also check for errors:

builder: (context, snapshot) {
  if (snapshot.hasData) {
    // now you can be sure that snapshot.data is not null
  } else if (snapshot.hasError) {
    // manage errors
  }
  // otherwise show a progress indicator while the future is running
  return const Center(child: CircularProgressIndicator());
}