import 'package:twitter/twitter.dart';

main () async {
  Twitter twitter= new Twitter('YOUR CONSUMER KEY', 'YOUR CONSUMER SERCRET',
                    'YOUR ACCESS TOKEN', 'YOUR ACCESS TOKEN SECERT');
  var response = await twitter.request("GET", "statuses/user_timeline.json");
  print(response.body);
}

Map keymap = {"consumerKey" : "YOUR CONSUMER KEY",
              "consumerSecret" : "YOUR CONSUMER SECRET",
              "accessToken" : "YOUR ACCESS TOKEN",
              "accessSecret" : "YOUR ACCESS SECRET"};
Twitter twitter = new Twitter.fromMap(keyMap);

TwitterStream userstream = await twitter.getStream();
userstream.listen((tweet) {
  print(tweet["text"]);
});