firebase 안드로이드 1 단계 - 설정 로그인 가입 기능

firebase 안드로이드 1 단계 - 설정 로그인 가입 기능

소스코드 다운로드

https://firebasestorage.googleapis.com/v0/b/testmemo-8978f.appspot.com/o/android_thanks_project%2FAndroid_Thanks1.zip?alt=media&token=f9cda798-6348-4bbd-8d89-d5e4c0af0f61

* 초기 설정

0. 안드로이드 플랫폼 설정해주기

1.Google-play.service.json을 app 수준에 넣어준다.

2.프로젝트 빌드 그래들 열어서 Sdk 추가하기

3.앱모듈안에도 sdk를 넣어준다.

4.싱크 나우 눌러주기

5.안되면 구글 리파지토리, sdk 업데이트

 6.Apply plugin을 맨 아랫줄에 복사해서 넣어준다.

프로젝트 생성

구성파일 다운로드

프로젝트 수준 build.gradle

메니페스트

앱 수준 build.gradle

서명 인증서

서명인증서

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join.activity

package me.happygate.thanks;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseAuthInvalidCredentialsException;
import com.google.firebase.auth.FirebaseAuthUserCollisionException;
import com.google.firebase.auth.FirebaseAuthWeakPasswordException;
import com.google.firebase.auth.FirebaseUser;

public class JoinActivity extends AppCompatActivity {

    //이메일 비밀번호 로그인 모듈 변수
    private FirebaseAuth mAuth;
    //현재 로그인 된 유저 정보를 담을 변수
    private FirebaseUser currentUser;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_join);

        mAuth = FirebaseAuth.getInstance();

        //이메일
        final EditText emailTxt = (EditText)findViewById(R.id.emailTxt);
        //이름
        final EditText nameTxt = (EditText)findViewById(R.id.nameTxt);
        //비밀번호
        final EditText pwTxt = (EditText)findViewById(R.id.pwTxt);
        //버튼
        Button joinBtn = (Button)findViewById(R.id.joinBtn);


        //버튼이 눌렀을 때
        joinBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                String email = emailTxt.getText().toString();
                String name = nameTxt.getText().toString();
                String pw = pwTxt.getText().toString();


                Toast.makeText(JoinActivity.this,email +"/=가입 버튼 눌리고" + name +"/" + pw,Toast.LENGTH_SHORT).show();


                //가입 성공했을 때 -> 감사리스트 메인 페이지로 이동하기

                //Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
                //startActivityForResult(signInIntent, 100);Toast.makeText(AuthActivity.this,"btn",Toast.LENGTH_SHORT).show();
                //Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
               // startActivityForResult(signInIntent, 100);

                joinStart(email,name,pw);
            }
        });

    }
    //가입 함수
    public void joinStart(String email, final String name, String password){

        mAuth.createUserWithEmailAndPassword(email, password)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {

                        if(!task.isSuccessful()) {
                            try {
                                throw task.getException();
                            } catch(FirebaseAuthWeakPasswordException e) {
                                Toast.makeText(JoinActivity.this,"비밀번호가 간단해요.." ,Toast.LENGTH_SHORT).show();
                            } catch(FirebaseAuthInvalidCredentialsException e) {
                                Toast.makeText(JoinActivity.this,"email 형식에 맞지 않습니다." ,Toast.LENGTH_SHORT).show();
                            } catch(FirebaseAuthUserCollisionException e) {
                                Toast.makeText(JoinActivity.this,"이미존재하는 email 입니다." ,Toast.LENGTH_SHORT).show();
                            } catch(Exception e) {
                                Toast.makeText(JoinActivity.this,"다시 확인해주세요.." ,Toast.LENGTH_SHORT).show();
                            }
                        }else{

                            currentUser = mAuth.getCurrentUser();

                            Toast.makeText(JoinActivity.this, "가입 성공  " + name + currentUser.getEmail() + "/" + currentUser.getUid() ,Toast.LENGTH_SHORT).show();

                            startActivity(new Intent(JoinActivity.this, MainActivity.class));
                            finish();
                        }
                    }
                });

    }
}

login.activity

package me.happygate.thanks;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.FirebaseNetworkException;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseAuthInvalidCredentialsException;
import com.google.firebase.auth.FirebaseAuthInvalidUserException;
import com.google.firebase.auth.FirebaseUser;

public class LoginActivity extends AppCompatActivity implements  GoogleApiClient.OnConnectionFailedListener{

    //이메일 비밀번호 로그인 모듈 변수
    private FirebaseAuth mAuth;
    //현재 로그인 된 유저 정보를 담을 변수
    private FirebaseUser currentUser;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        mAuth = FirebaseAuth.getInstance(); //이메일 비밀번호 로그인 모듈 변수

        //이메일
        final EditText emailTxt = (EditText)findViewById(R.id.emailTxt);
        //비밀번호
        final EditText pwTxt = (EditText)findViewById(R.id.pwTxt);
        //버튼
        Button joinBtn = (Button)findViewById(R.id.joinBtn);


        //이메일
        final TextView goJoinTxt = (TextView)findViewById(R.id.goJoinTxt);

        //로그인 버튼이 눌렀을 때
        joinBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                String email = emailTxt.getText().toString();
                String password = pwTxt.getText().toString();

                //로그인 성공했을 때 -> 감사리스트 메인 페이지로 이동하기
                loginStart(email, password);
            }
        });

        //가입하러 가기 버튼 눌렀을 때
        goJoinTxt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //Toast.makeText(LoginActivity.this,"가입하러 가기 버튼 눌렀을 때",Toast.LENGTH_SHORT).show();
                startActivity(new Intent(LoginActivity.this, JoinActivity.class));
                finish();
            }
        });

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
        Toast.makeText(LoginActivity.this,"연결이 해제되었습니다",Toast.LENGTH_SHORT).show();
    }

    //public Boolean check;
    public void loginStart(String email, String password){
        Toast.makeText(LoginActivity.this,"loginStart 함수 안으로" ,Toast.LENGTH_SHORT).show();
              mAuth.signInWithEmailAndPassword(email,password).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                  @Override
                  public void onComplete(@NonNull Task<AuthResult> task) {

                      Toast.makeText(LoginActivity.this,"mAuth. onComplete 함수" ,Toast.LENGTH_SHORT).show();
                      if (!task.isSuccessful()) {
                          try {
                              throw task.getException();
                          } catch (FirebaseAuthInvalidUserException e) {
                              Toast.makeText(LoginActivity.this,"존재하지 않는 id 입니다." ,Toast.LENGTH_SHORT).show();
                          } catch (FirebaseAuthInvalidCredentialsException e) {
                              Toast.makeText(LoginActivity.this,"이메일 형식이 맞지 않습니다." ,Toast.LENGTH_SHORT).show();
                          } catch (FirebaseNetworkException e) {
                              Toast.makeText(LoginActivity.this,"Firebase NetworkException" ,Toast.LENGTH_SHORT).show();
                          } catch (Exception e) {
                              Toast.makeText(LoginActivity.this,"Exception" ,Toast.LENGTH_SHORT).show();
                          }

                      }else{


                          currentUser = mAuth.getCurrentUser();

                          Toast.makeText(LoginActivity.this, "로그인 성공" + "/" + currentUser.getEmail() + "/" + currentUser.getUid() ,Toast.LENGTH_SHORT).show();

                          startActivity(new Intent(LoginActivity.this, MainActivity.class));
                          finish();
                      }

                  }
              });
    }

    //로그아웃 안했으면, 즉 로그인 되어있으면 자동으로 메인페이지로 이동시키기
    @Override
    public void onStart() {
        super.onStart();
        // Check if user is signed in (non-null) and update UI accordingly.
        currentUser = mAuth.getCurrentUser();
        if(currentUser != null){
            startActivity(new Intent(LoginActivity.this, MainActivity.class));
            finish();
        }
    }



}

Main.activity

package me.happygate.thanks;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomNavigationView;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.widget.TextView;

import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;

public class MainActivity extends AppCompatActivity {
    //이메일 비밀번호 로그인 모듈 변수
    private FirebaseAuth mAuth;
    //현재 로그인 된 유저 정보를 담을 변수
    private FirebaseUser currentUser;

    private TextView mTextMessage;

    private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
            = new BottomNavigationView.OnNavigationItemSelectedListener() {

        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem item) {

            switch (item.getItemId()) {
                case R.id.navigation_home:
                    mTextMessage.setText(currentUser.getEmail());
                    return true;
                case R.id.navigation_dashboard:
                    mTextMessage.setText(currentUser.getUid());
                    return true;
                case R.id.navigation_notifications:
                    mTextMessage.setText(currentUser.getEmail());
                    return true;
            }
            return false;
        }

    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mAuth = FirebaseAuth.getInstance();
        mTextMessage = (TextView) findViewById(R.id.message);

        BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
        navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
    }


    //로그인 되어있으면 currentUser 변수에 유저정보 할당. 아닌경우 login 페이지로 이동!
    @Override
    public void onStart() {
        super.onStart();
        // Check if user is signed in (non-null) and update UI accordingly.
        currentUser = mAuth.getCurrentUser();
        if(currentUser == null){
            startActivity(new Intent(MainActivity.this, LoginActivity.class));
            finish();
        }
    }


}

=============================================================================================================================

다음작업

1.가입할때 user name 파이어베이스 db에 push 시켜주기

2.로그아웃 기능

3.땡스피드 페이지 꾸미기 - tap layout , intent, viewpager  체크

*글쓰기 기능 - 저장 , null 체크

*조회 - 감사리스트 불러오기

*글 누르면 다른 user 프로필 페이지로 이동하기