[Flutter] 인스타그램 클론 - 3

인스타그램 클론 - 1 링크 : https://velog.io/@cho2kkh/Flutter-%EC%9D%B8%EC%8A%A4%ED%83%80%EA%B7%B8%EB%9E%A8-%ED%81%B4%EB%A1%A0-1

인스타그램 클론 - 2 링크 : https://velog.io/@cho2kkh/Flutter-%EC%9D%B8%EC%8A%A4%ED%83%80%EA%B7%B8%EB%9E%A8-%ED%81%B4%EB%A1%A0-2

이미지 업로드

플러그인 추가 : image_picker

ios/Runner/info.plist 하단에 코드 추가.

<key>NSPhotoLibraryUsageDescription</key>
<string>Photo Library Usage</string>
<key>NSCameraUsageDescription</key>
<string>Camera Usage</string>
<key>NSMicrophoneUsageDescription</key>
<string>Mic Usage</string>

이미지픽 함수 작성

이미지픽 유틸함수 작성.

lib/utils/utils.dart

pickImage(ImageSource source) async {
  final ImagePicker _imagePicker = ImagePicker();

  XFile? _file = await _imagePicker.pickImage(source: source);

  if (_file != null) {
    return await _file.readAsBytes();
  }
  print('No image selected');
}

이미지픽 스테이트 저장 함수 작성.

lib/screens/signup_screen.dart

Uint8List? _image;

void selectImage() async {
    Uint8List im = await pickImage(ImageSource.gallery);
    setState(() {
      _image = im;
    });
  }

FirebaseStorage

lib/resources/storage_methods.dart

import 'dart:typed_data';

import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_storage/firebase_storage.dart';
import 'package:flutter/material.dart';

class StorageMethods {
  final FirebaseStorage _storage = FirebaseStorage.instance;
  final FirebaseAuth _auth = FirebaseAuth.instance;

  // adding image to firebase storage
  Future<String> uploadImageToStorage(
      String childName, Uint8List file, bool isPost) async {
    Reference ref =
        _storage.ref().child(childName).child(_auth.currentUser!.uid);

    UploadTask uploadTask = ref.putData(file);

    TaskSnapshot snap = await uploadTask;
    String downloadUrl = await snap.ref.getDownloadURL();

    return downloadUrl;
  }
}

FirebaseAuth

lib/resources/auth_methods.dart

import 'dart:typed_data';

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:test_project/resources/storage_methods.dart';

class AuthMethods {
  final FirebaseAuth _auth = FirebaseAuth.instance;
  final FirebaseFirestore _firestore = FirebaseFirestore.instance;

  // sign up user
  Future<String> signUpUser({
    required String email,
    required String password,
    required String username,
    required String bio,
    required Uint8List file,
  }) async {
    String res = "Some error occurred";
    try {
      if (email.isNotEmpty ||
          password.isNotEmpty ||
          username.isNotEmpty ||
          bio.isNotEmpty) {
        // register user
        UserCredential cred = await _auth.createUserWithEmailAndPassword(
            email: email, password: password);

        String photoUrl = await StorageMethods()
            .uploadImageToStorage('profilePics', file, false);

        // add user to our database
        await _firestore.collection('users').doc(cred.user!.uid).set({
          'username': username,
          'uid': cred.user!.uid,
          'email': email,
          'bio': bio,
          'followers': [],
          'following': [],
          'photoUrl': photoUrl,
        });

        res = "success";
      }
    } catch (e) {
      res = e.toString();
    }
    return res;
  }
}

여기까지 하면 회원가입 및 이미지 업로드, 유저 테이블 생성을 테스트할 수 있다.