Flutter | specifies the type of page return value

Navigator.push(context,
        MaterialPageRoute(builder: (context) => _Page2()))
    .then((value) {
    
  print(' The returned value is ===$value');
});

because push The return value type of method is ：Future<dynamic>：

therefore .then there value yes dynamic Type of .

Sometimes we want to take value A property of , This is the time dynamic It's not easy to use .

Solution 1：

Type conversion ：

final model = value as String;

Solution 2：

Specify the type of returned value ：

Navigator.push<String>