getOrCreate static method

Future<String> getOrCreate()

Implementation

static Future<String> getOrCreate() async{
  final sp = await   SharedPreferences.getInstance();
  var id = sp.getString(_kKey);
  if(id == null || id.isEmpty){
    id = const Uuid().v4();
    await sp.setString(_kKey, id);


  }
  return id;
}