the whole widget rebuild when i press like button in flutter

gistfile1.dart

import 'dart:io';

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:foodgram/firebase_auth.dart';
import 'package:foodgram/preview_post.dart';
import 'package:foodgram/random_asset.dart';
import 'package:foodgram/user.dart';
import 'package:image_picker/image_picker.dart';
import 'push_id_generator.dart';

class UserFeedView extends StatefulWidget {


  
  @override
  _UserFeedViewState createState() => _UserFeedViewState();
}

class _UserFeedViewState extends State<UserFeedView> {

  User user ;

  @override
  void initState() {
    // TODO: implement initState
    super.initState();

    getCurrentUser((firebaseUser){
      if(firebaseUser != null){
        setState(() {
          user = User(
            uid:  firebaseUser.uid,
            userName: firebaseUser.displayName
          );
        });
      }
    });

  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.orangeAccent.shade100,
      appBar: AppBar(
        title: Text(
          'Foodgram',
          style: TextStyle(
            fontWeight: FontWeight.w200,
          ),
        ),
        actions: <Widget>[
          IconButton(
            icon: Icon(Icons.lock),
            onPressed: () {
              FirebaseAuth.instance.signOut();
            },
          )
        ],
      ),
      body: Center(
        child: user == null ?  Text('please login') : PostListView(
          user: user,
        ),
      ),
      floatingActionButton: FloatingActionButton(
        backgroundColor: Colors.brown,
        onPressed: selectImageFromGallaray,
        child: Icon(
          Icons.add,
          color: Colors.white,
        ),
      ),
    );
  }

  selectImageFromGallaray() async {
    var imageFile = await ImagePicker.pickImage(source: ImageSource.camera);

    displayPostPreviewScreen(imageFile);
  }

  void displayPostPreviewScreen(File imageFile) {

    Navigator.push(
      context,
      MaterialPageRoute(builder: (BuildContext context) {
        return PreviewPost(imageFile: imageFile, user: user);
      }),
    );
  }
  
}

class PostListView extends StatefulWidget {

  final User user ;

  PostListView({
    this.user
});

  @override
  _UserListViewState createState() => _UserListViewState();
}

class _UserListViewState extends State<PostListView> {
  @override
  Widget build(BuildContext context) {
    return new StreamBuilder<QuerySnapshot>(
      stream: Firestore.instance.collection('posts').snapshots(),
      builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
        if (!snapshot.hasData) return new Text('no post available');
        return new ListView(
          children: snapshot.data.documents.map((DocumentSnapshot document) {
            return createListItem(document);
          }).toList(),
        );
      },
    );
  }

  Widget createListItem(DocumentSnapshot document) {
    return Padding(
      padding: EdgeInsets.all(8.0),
      child: Container(
        decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(10.0),
            boxShadow: [
              BoxShadow(
                color: Colors.black.withOpacity(.3),
                blurRadius: 5.0,
                spreadRadius: 4.0,
              )
            ]),
        child: ClipRRect(
          borderRadius: BorderRadius.circular(10.0),
          child: Material(
            child: Stack(
              children: <Widget>[
                Image.asset(
                  randomAsset(),
                  fit: BoxFit.cover,
                ),
                Positioned(
                  right: 0.0,
                  left: 0.0,
                  bottom: 0.0,
                  child: Container(
                    padding: EdgeInsets.all(20.0),
                    decoration: BoxDecoration(
                        gradient: LinearGradient(
                            begin: Alignment.topCenter,
                            end: Alignment.bottomCenter,
                            colors: [Colors.transparent, Colors.black])),
                    child: Row(
                      children: <Widget>[
                        Expanded(
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start
                            ,
                            children: <Widget>[
                              Text(
                                document['title'],
                                style: TextStyle(
                                    color: Colors.white,
                                    fontSize: 20.0,
                                    fontWeight: FontWeight.w300),
                              ),
                              Text(
                                'secondary title',
                                style: TextStyle(
                                    color: Colors.white,
                                    fontSize: 15.0,
                                    fontWeight: FontWeight.w300),
                              ),
                            ],
                          ),
                        ),
                        IconButton(
                          onPressed: (){
                                print('on pressed on like button');

                                makeLike(document);
                          },
                          icon: Icon(Icons.favorite,color: Colors.white,size: 20.0,) ,
                        ),
                        Text(document['likeCount']==0 ? '' : document['likeCount'].toString() ,
                          style: TextStyle(
                            color: Colors.white ,
                            fontSize: 20.0
                          ),

                        )

                      ],
                    ),
                  ),
                )
              ],
            ),
          ),
        ),
      ),
    );
  }

  void makeLike(DocumentSnapshot document) {

      final postID = document.documentID ; // currentPostID
      final userID = widget.user.uid ;
      // a unique ID which prevent user make multiple likes in one post :D
      final likeID = postID + '__' + userID ; //
      
      final firestore = Firestore.instance ;

      Map<String,dynamic> map = Map();
      map.putIfAbsent('userId', ()=> userID);
      map.putIfAbsent('postId', ()=> postID);

      firestore.collection('likes').document(likeID)
          .setData(map)
          .then((avoid){

        // like success

        print('like success ');

      }).catchError((error){

        // error

        print('like error');

      });


  }
}