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Feat: 로그인/회원가입 기능
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@JieunYume
JieunYume committed May 25, 2023
1 parent af51a1b commit defe770
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96 changes: 96 additions & 0 deletions app/src/main/java/org/techtown/bookshelf/login/LoginActivity.java
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package org.techtown.bookshelf.login;


import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

import org.techtown.bookshelf.R;
import org.techtown.bookshelf.user.MainActivity;

public class LoginActivity extends AppCompatActivity {
private DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference("user");
DataSnapshot dataSnapshot;
private AlertDialog dialog;
private EditText login_id, login_password;
private Button login_button, join_button;

String UserId, UserPwd;

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

login_id = findViewById( R.id.login_id);
login_password = findViewById( R.id.login_password );
join_button = findViewById( R.id.join_button );
login_button = findViewById( R.id.login_button );

join_button.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent( LoginActivity.this, RegisterActivity.class );
startActivity(intent);
}
});

login();
}

private void login() {
login_button.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View view) {
UserId = login_id.getText().toString();
UserPwd = login_password.getText().toString();

if (UserId.equals("") || UserPwd.equals("")) {
AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
dialog = builder.setMessage("아이디 또는 비밀번호를 입력해주셔야죵!").setPositiveButton("확인", null).create();
dialog.show();
return;
}
databaseReference.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
for (DataSnapshot dataSnapshot : snapshot.getChildren()) {
if(dataSnapshot.getKey().equals(UserId)){
if(dataSnapshot.child("password").getValue().equals(UserPwd)) {
Toast.makeText(getApplicationContext(), "로그인에 성공했습니다.", Toast.LENGTH_LONG).show();
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
intent.putExtra("UserId", UserId);
startActivity(intent);
return;
}else{
Toast.makeText(getApplicationContext(), "비밀번호가 틀렸습니다.", Toast.LENGTH_LONG).show();
return;
}
}
}
Toast.makeText(getApplicationContext(), "로그인에 실패했습니다.", Toast.LENGTH_LONG).show();
}
@Override
public void onCancelled(@NonNull DatabaseError error) {

}
});
}
});
}


}
192 changes: 192 additions & 0 deletions app/src/main/java/org/techtown/bookshelf/login/RegisterActivity.java
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package org.techtown.bookshelf.login;

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import com.bumptech.glide.Glide;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;

import org.techtown.bookshelf.R;
import org.techtown.bookshelf.user.MainActivity;
import org.techtown.bookshelf.user.UserProfileActivity;

import java.io.InputStream;
import java.util.Date;
import java.util.Iterator;

public class RegisterActivity extends AppCompatActivity {

private EditText join_id, join_password, join_name, join_pwck;
private Button join_button, check_button, back_button;
private AlertDialog dialog;
private boolean validate = false;

//DB연동
private FirebaseDatabase firebaseDatabase = FirebaseDatabase.getInstance();
private DatabaseReference databaseReference = firebaseDatabase.getReference("user");

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

//아이디값 찾아주기
join_id = findViewById(R.id.join_id);
join_password = findViewById(R.id.join_password);
join_pwck = findViewById(R.id.join_pwck);
check_button = findViewById(R.id.check_button);
join_button = findViewById(R.id.join_button);
back_button = findViewById(R.id.back_button);

//[check_button]아이디 중복 체크 후 성공하면 DB에 유저 데이터를 추가한다.
id_check();

//[join_button]회원가입 버튼 클릭 시 수행
join();

//[back_button]
back_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(RegisterActivity.this, LoginActivity.class);
startActivity(intent);
}
});

storage = FirebaseStorage.getInstance();
StorageReference storageReference = storage.getReference();
StorageReference submitProfile=storageReference.child("ProfileImage/default_profile.png");
submitProfile.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
default_image_uri=uri;
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(getApplicationContext(), "디폴트 이미지를 불러오는 데 실패했습니다.", Toast.LENGTH_LONG).show(); }
});

}

private void id_check() {
check_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String UserId = join_id.getText().toString();
if (validate) {
Toast.makeText(getApplicationContext(), "이미 아이디 중복 체크를 완료했어요!", Toast.LENGTH_LONG).show();
return; //이미 검증 완료
}

//사용자가 아이디를 입력하지 않으면 다이얼로그 경고창을 띄운다.
if (UserId.equals("")) {
AlertDialog.Builder builder = new AlertDialog.Builder(RegisterActivity.this);
dialog = builder.setMessage("아이디를 입력해주셔야죵!").setPositiveButton("확인", null).create();
dialog.show();
return;
}
databaseReference.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
Iterator<DataSnapshot> child = snapshot.getChildren().iterator();
while (child.hasNext()) {
if (UserId.equals(child.next().getKey())) {
Toast.makeText(getApplicationContext(), "이미 존재하는 아이디입니다.", Toast.LENGTH_LONG).show();
return;
//리스너 등록을 해제해야 하는가:????? -> 안해도 됨
}
}
validate = true;
Toast.makeText(getApplicationContext(), "사용가능한 아이디입니다! 이제 조금만 더 입력하면 돼요!", Toast.LENGTH_LONG).show();
}

@Override
public void onCancelled(@NonNull DatabaseError error) {

}
});
}
});
}

private void join() {
join_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String UserId = join_id.getText().toString();
String UserPwd = join_password.getText().toString();
String PwdCk = join_pwck.getText().toString();
//아이디 중복체크 했는지 확인
if (!validate) {
AlertDialog.Builder builder = new AlertDialog.Builder(RegisterActivity.this);
dialog = builder.setMessage("중복된 아이디가 있는지 확인하세요.").setNegativeButton("확인", null).create();
dialog.show();
return;
}
//한 칸이라도 입력 안했을 경우
if (UserId.equals("") || UserPwd.equals("") || PwdCk.equals("")) {
AlertDialog.Builder builder = new AlertDialog.Builder(RegisterActivity.this);
dialog = builder.setMessage("입력칸을 모두 채워주세요!").setNegativeButton("확인", null).create();
dialog.show();
return;
}
//비밀번호와 비밀번호 확인이 일치한지 확인 후 DB에 데이터 추가
if (UserPwd.equals(PwdCk)) {
firebaseDatabase.getReference("user").child(UserId).child("id").setValue(UserId);
Date joinDate = new Date(System.currentTimeMillis());
firebaseDatabase.getReference("user").child(UserId).child("join_date").setValue(joinDate.toString());
firebaseDatabase.getReference("user").child(UserId).child("password").setValue(UserPwd);

StorageReference storageReference = storage.getReference();
StorageReference riversReference = storageReference.child("ProfileImage/"+UserId+"/1.png");
UploadTask uploadTask = riversReference.putFile(default_image_uri);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(RegisterActivity.this, "업로드 실패!", Toast.LENGTH_LONG).show();
}
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Toast.makeText(RegisterActivity.this, "업로드 성공!", Toast.LENGTH_LONG).show();

Toast.makeText(getApplicationContext(), String.format("%s님 가입을 환영합니다.", UserId), Toast.LENGTH_SHORT).show();
Intent intent = new Intent(RegisterActivity.this, LoginActivity.class);
startActivity(intent);

}
});
} else {
AlertDialog.Builder builder = new AlertDialog.Builder(RegisterActivity.this);
dialog = builder.setMessage("비밀번호가 동일하지 않습니다.").setNegativeButton("확인", null).create();
dialog.show();
return;
}
}
});
}
}
101 changes: 101 additions & 0 deletions app/src/main/res/layout/activity_join.xml
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<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/linearLayout3"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="@font/gangwon_bold"
android:text="회원가입"
android:textSize="25dp"
android:textStyle="normal"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />


<EditText
android:id="@+id/join_id"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:ems="10"
android:fontFamily="@font/gangwon_light"
android:hint="아이디"
android:inputType="text"
android:textColor="@color/black"
android:textColorHint="@color/colorGray"
android:textSize="25dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView" />


<Button
android:id="@+id/check_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="@color/appColorGreen"
android:fontFamily="@font/gangwon_bold"
android:text="중복확인"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toEndOf="@+id/join_id"
app:layout_constraintTop_toTopOf="@+id/join_id" />

<EditText
android:id="@+id/join_password"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:ems="10"
android:fontFamily="@font/gangwon_light"
android:hint="비밀번호"
android:inputType="textPassword"
android:textColor="@color/black"
android:textColorHint="@color/colorGray"
android:textSize="25dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/join_id" />

<EditText
android:id="@+id/join_pwck"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:ems="10"
android:fontFamily="@font/gangwon_light"
android:hint="비밀번호 확인"
android:inputType="textPassword"
android:textColor="@color/black"
android:textColorHint="@color/colorGray"
android:textSize="25dp"
app:layout_constraintStart_toStartOf="@+id/join_password"
app:layout_constraintTop_toBottomOf="@+id/join_password" />

<Button
android:id="@+id/back_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="15dp"
android:backgroundTint="@color/appColorGreen"
android:fontFamily="@font/gangwon_bold"
android:text="이전"
app:layout_constraintEnd_toStartOf="@+id/join_button"
app:layout_constraintStart_toStartOf="@+id/join_pwck"
app:layout_constraintTop_toBottomOf="@+id/join_pwck" />

<Button
android:id="@+id/join_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="@color/appColorGreen"
android:fontFamily="@font/gangwon_bold"
android:text="가입"
app:layout_constraintEnd_toEndOf="@+id/check_button"
app:layout_constraintStart_toEndOf="@+id/back_button"
app:layout_constraintTop_toBottomOf="@+id/join_pwck" />


</androidx.constraintlayout.widget.ConstraintLayout>
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