MainActivity.java
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package com.example.user.firebaseauthdemo;
import android.*;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
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.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
public class MainActivity extends AppCompatActivity implements View.OnClickListener
{
private Button buttonRegister;
private EditText editTextName;
private EditText editTextEmail;
private EditText editTextPassword;
private TextView textViewSignIn;
public static final int REQUEST_LOCATION_CODE = 99;
private ProgressDialog progressDialog;
private FirebaseAuth firebaseAuth;
private DatabaseReference mDatabase;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
progressDialog = new ProgressDialog(MainActivity.this);
firebaseAuth = FirebaseAuth.getInstance();
mDatabase = FirebaseDatabase.getInstance().getReference().child("Users");
checkLocationPermission();
if (firebaseAuth.getCurrentUser() != null)
{
//profile activity here
finish();
startActivity(new Intent(getApplicationContext(), Main2Activity.class));
}
buttonRegister = (Button) findViewById(R.id.buttonRegister);
editTextName = (EditText) findViewById(R.id.editTextName);
editTextEmail = (EditText) findViewById(R.id.editTextEmail);
editTextPassword = (EditText) findViewById(R.id.editTextPassword);
textViewSignIn = (TextView) findViewById(R.id.textViewSignIn);
buttonRegister.setOnClickListener(this);
textViewSignIn.setOnClickListener(this);
}
private void registerUser()
{
final String name = editTextName.getText().toString().trim();
final String email = editTextEmail.getText().toString().trim();
final String password = editTextPassword.getText().toString().trim();
if (TextUtils.isEmpty(name))
{
Toast.makeText(this, "이름을 입력하세요", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(email))
{
//email is empty
Toast.makeText(this, "이메일을 입력하세요요", Toast.LENGTH_SHORT).show();
//stopping the function execution further
return;
}
if (TextUtils.isEmpty(password))
{
//password is empty
Toast.makeText(this, "패스워드를 입력하세요", Toast.LENGTH_SHORT).show();
//stopping the function execution further
return;
}
//if validation are ok
//we will first show a progressbar
progressDialog.setTitle("로딩중...");
progressDialog.setMessage("등록 중입니다");
progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progressDialog.show();
//creating a new user
firebaseAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(this, new OnCompleteListener<AuthResult>()
{
@Override
public void onComplete(@NonNull Task<AuthResult> task)
{
if (task.isSuccessful())
{
finish();
DatabaseReference newPost = mDatabase.push();
newPost.child("name").setValue(name);
newPost.child("email").setValue(email);
startActivity(new Intent(getApplicationContext(), Main2Activity.class));
}
else
{
Toast.makeText(MainActivity.this, "등록할 수 없습니다.", Toast.LENGTH_SHORT).show();
}
progressDialog.dismiss();
}
});
}
@Override
public void onClick(View view)
{
if (view == buttonRegister)
{
registerUser();
}
if (view == textViewSignIn)
{
//will open login activity here
startActivity(new Intent(this, LoginActivity.class));
}
}
public boolean checkLocationPermission()
{
if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)
{
if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.ACCESS_FINE_LOCATION))
{
ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_LOCATION_CODE);
}
else
{
ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_LOCATION_CODE);
}
return false;
}
else
{
return true;
}
}
}