create a singleton class in flutter code example
Example 1: flutter singleton
class Singleton {
static final Singleton _instance = Singleton._internal();
factory Singleton() => _instance;
Singleton._internal();
}
// Whenever you need to get the singleton, call its factory constructor, e.g.:
// var singleton = Singleton();
//
// You'll always get the same instance.
Example 2: flutter singleton
class Singleton {
static final Singleton _singleton = Singleton._internal();
factory Singleton() {
return _singleton;
}
Singleton._internal();
}
Example 3: singleton classes in dart example
class Singleton {
static Singleton _instance;
Singleton._internal();
static Singleton getInstance() {
if (_instance == null) {
_instance = Singleton._internal();
}
return _instance;
}
}