How can I convert an integer timestamp to Datetime.
Sample Code:
@JsonSerializable(nullable: false)
class Person {
final String firstName;
final String lastName;
final DateTime dateOfBirth;
Person({this.firstName, this.lastName, this.dateOfBirth});
factory Person.fromJson(Map<String, dynamic> json) => _$PersonFromJson(json);
Map<String, dynamic> toJson() => _$PersonToJson(this);
}
How do I convert dateOfBirth integer timeStamp to DateTime?
To convert an int timestamp to DateTime, you need to pass a static method that
returns a DateTime result to the fromJson parameter in the @JsonKey annotation.
This code solves the problem and allows the convertion.
@JsonSerializable(nullable: false)
class Person {
final String firstName;
final String lastName;
@JsonKey(fromJson: _fromJson, toJson: _toJson)
final DateTime dateOfBirth;
Person({this.firstName, this.lastName, this.dateOfBirth});
factory Person.fromJson(Map<String, dynamic> json) => _$PersonFromJson(json);
Map<String, dynamic> toJson() => _$PersonToJson(this);
static DateTime _fromJson(int int) => DateTime.fromMillisecondsSinceEpoch(int);
static int _toJson(DateTime time) => time.millisecondsSinceEpoch;
}
usage
Person person = Person.fromJson(json.decode('{"firstName":"Ada", "lastName":"Amaka", "dateOfBirth": 1553456553132 }'));
I use this:
@JsonSerializable()
class Person {
@JsonKey(fromJson: dateTimeFromTimestamp)
DateTime dateOfBirth;
...
}
DateTime dateTimeFromTimestamp(Timestamp timestamp) {
return timestamp == null ? null : timestamp.toDate();
}
