Implement Splash Screen and Authentication in Social Media Android App

Photo of Namachila Namachila Send an email 2 minutes ago
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This is the Part 1 of “Build a Social Media App on Android Studio” tutorial, and we are going to cover the following functionalities in this article:

  • Creating a Splash Screen
  • Authentication Part:
    • Registration, and
    • Login

Step By Step Implementation

Step 1: Create a New Project

To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Note that select Java as the programming language.

Step 2: Connect your app to firebase 

Go to the Tools > Firebase > Authentication and connect your app to firebase and also add the firebase authentication SDK to your app like the following image.

Then go to the Firebase Console > Authentication > Sign-in method and Enable the Email/Password.

Step 3: Create 4 new empty activities

Go to the package name > right-click > New > Activity > Empty Activity and name the activity as SplashScreen, RegistrationActivity, LoginActivity, and DashboardActivity. You may also refer to this article How to create new empty activity in android studio.

Step 4: Working with the SplashScreen Activity

Navigate to the app > res > layout > activity_splash_screen.xml and add the below code to that file. Below is the code for the activity_splash_screen.xml file. 

XML




<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/background_color"
 
    tools:context=".SplashScreen">
 
</androidx.constraintlayout.widget.ConstraintLayout>
 



















Working with the SplashScreen.java file. Here we are checking that if the user is null then go to LoginActivity. Else move to DashboardActivity. 




new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                FirebaseUser user=mAuth.getCurrentUser();
                if(user==null){
                    Intent intent = new Intent(SplashScreen.this, LoginActivity.class);
                    startActivity(intent);
                    finish();
                }
                else {
                    Intent mainIntent= new Intent(SplashScreen.this, DashboardActivity.class);
                    mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
                    startActivity(mainIntent);
                    finish();
                }
            }
      },1000);


Below is the code for the SplashScreen.java file.






Java

















































package com.example.socialmediaapp;


 


import android.content.Intent;


import android.os.Bundle;


import android.os.Handler;


 


import androidx.appcompat.app.AppCompatActivity;


 


import com.google.firebase.auth.FirebaseAuth;


import com.google.firebase.auth.FirebaseUser;


 


public class SplashScreen extends AppCompatActivity {


 


    FirebaseUser currentUser;


    private FirebaseAuth mAuth;


 


    @Override


    protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);


        setContentView(R.layout.activity_splash_screen);


        mAuth = FirebaseAuth.getInstance();


        if (mAuth != null) {


            currentUser = mAuth.getCurrentUser();


        }


        new Handler().postDelayed(new Runnable() {


            @Override


            public void run() {


                FirebaseUser user = mAuth.getCurrentUser();


                if (user == null) {


                    Intent intent = new Intent(SplashScreen.this, LoginActivity.class);


                    startActivity(intent);


                    finish();


                } else {


                    Intent mainIntent = new Intent(SplashScreen.this, DashboardActivity.class);


                    mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);


                    startActivity(mainIntent);


                    finish();


                }


            }


        }, 1000);


    }


}








































Step 5: Working with the RegistrationActivity Activity


Navigate to the app > res > layout > activity_registration.xml and add the below code to that file. Below is the code for the activity_registration.xml file.  Here we have created three EditText for the name, email and password and one Button to Register user.






XML

















































<?xml version="1.0" encoding="utf-8"?>


<RelativeLayout


    xmlns:android="http://schemas.android.com/apk/res/android"


    xmlns:tools="http://schemas.android.com/tools"


    android:layout_width="match_parent"


    android:layout_height="match_parent"


    tools:context=".RegistrationActivity">


 


    <TextView


        android:id="@+id/teacher"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_alignParentStart="true"


        android:layout_alignParentTop="true"


        android:layout_marginTop="50dp"


        android:gravity="center"


        android:text="Sign Up Here"


        android:textColor="@color/colorBlack"


        android:textSize="28sp"


        android:textStyle="bold|italic" />


 


    <TextView


        android:id="@+id/names"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_below="@id/teacher"


        android:layout_marginStart="35dp"


        android:layout_marginTop="120dp"


        android:text="Name"


        android:textColor="@color/colorBlack" />


 


    <EditText


        android:id="@+id/register_name"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_below="@+id/names"


        android:layout_alignParentStart="true"


        android:layout_marginLeft="30dp"


        android:layout_marginTop="10dp"


        android:layout_marginRight="30dp"


        android:background="@drawable/edit"


        android:drawableStart="@drawable/name"


        android:hint="Your Name..."


        android:inputType="text"


        android:padding="8dp" />


 


    <TextView


        android:id="@+id/email"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_below="@id/register_name"


        android:layout_marginStart="35dp"


        android:layout_marginTop="10dp"


        android:text="Email"


        android:textColor="@color/colorBlack" />


 


    <EditText


        android:id="@+id/register_email"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_below="@+id/email"


        android:layout_alignParentStart="true"


        android:layout_marginLeft="30dp"


        android:layout_marginTop="10dp"


        android:layout_marginRight="30dp"


        android:background="@drawable/edit"


        android:drawableStart="@drawable/ic_email"


        android:hint="Email..."


        android:inputType="textEmailAddress"


        android:padding="8dp" />


 


    <TextView


        android:id="@+id/pass"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_below="@id/register_email"


        android:layout_marginStart="35dp"


        android:layout_marginTop="10dp"


        android:text="Password"


        android:textColor="@color/colorBlack" />


 


    <EditText


        android:id="@+id/register_password"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_below="@+id/pass"


        android:layout_alignParentStart="true"


        android:layout_marginLeft="30dp"


        android:layout_marginTop="10dp"


        android:layout_marginRight="30dp"


        android:background="@drawable/edit"


        android:drawableStart="@drawable/password"


        android:hint="Password..."


        android:inputType="textPassword"


        android:padding="8dp" />


 


    <Button


        android:id="@+id/register_button"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_below="@+id/register_password"


        android:layout_marginLeft="30dp"


        android:layout_marginTop="30dp"


        android:layout_marginRight="30dp"


        android:background="@drawable/buttonss"


        android:padding="4dp"


        android:text="Create Account"


        android:textAllCaps="false"


        android:textColor="@android:color/background_light"


        android:textSize="24sp" />


 


    <TextView


        android:id="@+id/homepage"


        android:layout_width="match_parent"


        android:layout_height="wrap_content"


        android:layout_below="@+id/register_button"


        android:layout_centerHorizontal="true"


        android:layout_marginStart="15dp"


        android:layout_marginTop="20dp"


        android:layout_marginEnd="23dp"


        android:text=" Already Have a Account?Sign In"


        android:textAlignment="center"


        android:textColor="@color/colorBlack"


        android:textSize="17sp"


        android:textStyle="bold" />


 


</RelativeLayout>








































Working with the RegistrationActivity.java file. Creating a user with the email and password written by the user. If it fails then we will be showing the error.


mAuth.createUserWithEmailAndPassword(emaill, pass).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
            @Override
            public void onComplete(@NonNull Task<AuthResult> task) {
                if (task.isSuccessful()){
                    progressDialog.dismiss();
                }
                else {
                    progressDialog.dismiss();
                    Toast.makeText(RegistrationActivity.this,"Error",Toast.LENGTH_LONG).show();
                }
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                progressDialog.dismiss();
                Toast.makeText(RegistrationActivity.this,"Error Occurred",Toast.LENGTH_LONG).show();
            }
     });


Below is the code for the RegistrationActivity.java file.






Java

















































package com.example.socialmediaapp;


 


import android.app.ProgressDialog;


import android.content.Intent;


import android.os.Bundle;


import android.util.Patterns;


import android.view.View;


import android.widget.Button;


import android.widget.EditText;


import android.widget.TextView;


import android.widget.Toast;


 


import androidx.annotation.NonNull;


import androidx.appcompat.app.ActionBar;


import androidx.appcompat.app.AppCompatActivity;


 


import com.google.android.gms.tasks.OnCompleteListener;


import com.google.android.gms.tasks.OnFailureListener;


import com.google.android.gms.tasks.Task;


import com.google.firebase.auth.AuthResult;


import com.google.firebase.auth.FirebaseAuth;


import com.google.firebase.auth.FirebaseUser;


import com.google.firebase.database.DatabaseReference;


import com.google.firebase.database.FirebaseDatabase;


 


import java.util.HashMap;


 


public class RegistrationActivity extends AppCompatActivity {


 


    private EditText email, password, name;


    private Button mRegister;


    private TextView existaccount;


    private ProgressDialog progressDialog;


    private FirebaseAuth mAuth;


 


    @Override


    protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);


        setContentView(R.layout.activity_registration);


        ActionBar actionBar = getSupportActionBar();


        actionBar.setTitle("Create Account");


        actionBar.setDisplayShowHomeEnabled(true);


        actionBar.setDisplayHomeAsUpEnabled(true);


        email = findViewById(R.id.register_email);


        name = findViewById(R.id.register_name);


        password = findViewById(R.id.register_password);


        mRegister = findViewById(R.id.register_button);


        existaccount = findViewById(R.id.homepage);


        mAuth = FirebaseAuth.getInstance();


        progressDialog = new ProgressDialog(this);


        progressDialog.setMessage("Register");


         


        mRegister.setOnClickListener(new View.OnClickListener() {


            @Override


            public void onClick(View v) {


                String emaill = email.getText().toString().trim();


                String uname = name.getText().toString().trim();


                String pass = password.getText().toString().trim();


                if (!Patterns.EMAIL_ADDRESS.matcher(emaill).matches()) {


                    email.setError("Invalid Email");


                    email.setFocusable(true);


                } else if (pass.length() < 6) {


                    password.setError("Length Must be greater than 6 character");


                    password.setFocusable(true);


                } else {


                    registerUser(emaill, pass, uname);


                }


            }


        });


        existaccount.setOnClickListener(new View.OnClickListener() {


            @Override


            public void onClick(View v) {


                startActivity(new Intent(RegistrationActivity.this, LoginActivity.class));


            }


        });


    }


 


    private void registerUser(String emaill, final String pass, final String uname) {


        progressDialog.show();


        mAuth.createUserWithEmailAndPassword(emaill, pass).addOnCompleteListener(new OnCompleteListener<AuthResult>() {


            @Override


            public void onComplete(@NonNull Task<AuthResult> task) {


                if (task.isSuccessful()) {


                    progressDialog.dismiss();


                    FirebaseUser user = mAuth.getCurrentUser();


                    String email = user.getEmail();


                    String uid = user.getUid();


                    HashMap<Object, String> hashMap = new HashMap<>();


                    hashMap.put("email", email);


                    hashMap.put("uid", uid);


                    hashMap.put("name", uname);


                    hashMap.put("onlineStatus", "online");


                    hashMap.put("typingTo", "noOne");


                    hashMap.put("image", "");


                    FirebaseDatabase database = FirebaseDatabase.getInstance();


                    DatabaseReference reference = database.getReference("Users");


                    reference.child(uid).setValue(hashMap);


                    Toast.makeText(RegistrationActivity.this, "Registered User " + user.getEmail(), Toast.LENGTH_LONG).show();


                    Intent mainIntent = new Intent(RegistrationActivity.this, DashboardActivity.class);


                    mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);


                    startActivity(mainIntent);


                    finish();


                } else {


                    progressDialog.dismiss();


                    Toast.makeText(RegistrationActivity.this, "Error", Toast.LENGTH_LONG).show();


                }


            }


        }).addOnFailureListener(new OnFailureListener() {


            @Override


            public void onFailure(@NonNull Exception e) {


                progressDialog.dismiss();


                Toast.makeText(RegistrationActivity.this, "Error Occurred", Toast.LENGTH_LONG).show();


            }


        });


    }


 


    @Override


    public boolean onSupportNavigateUp() {


        onBackPressed();


        return super.onSupportNavigateUp();


    }


}








































Step 6: Working with the LoginActivity Activity


Navigate to the app > res > layout > activity_login.xml and add the below code to that file. Below is the code for the activity_login.xml file. Here We are creating two EditText for email and password and one Button to Login.






XML

















































<?xml version="1.0" encoding="utf-8"?>


<LinearLayout


    xmlns:android="http://schemas.android.com/apk/res/android"


    xmlns:tools="http://schemas.android.com/tools"


    android:layout_width="match_parent"


    android:layout_height="match_parent"


    tools:context=".LoginActivity">


 


    <ScrollView


        android:layout_width="match_parent"


        android:layout_height="match_parent"


        android:layout_alignParentStart="true"


        android:layout_alignParentTop="true">


 


        <RelativeLayout


            android:layout_width="match_parent"


            android:layout_height="wrap_content">


 


            <TextView


                android:id="@+id/welcom"


                android:layout_width="match_parent"


                android:layout_height="wrap_content"


                android:layout_marginStart="120dp"


                android:layout_marginTop="50dp"


                android:text="Welcome!"


                android:textColor="@color/colorBlack"


                android:textSize="30sp"


                android:textStyle="italic|bold" />


 


            <TextView


                android:id="@+id/email"


                android:layout_width="match_parent"


                android:layout_height="wrap_content"


                android:layout_below="@id/welcom"


                android:layout_marginStart="35dp"


                android:layout_marginTop="120dp"


                android:text="Email"


                android:textColor="@color/colorBlack" />


 


            <EditText


                android:id="@+id/login_email"


                android:layout_width="match_parent"


                android:layout_height="wrap_content"


                android:layout_below="@+id/email"


                android:layout_alignParentStart="true"


                android:layout_marginLeft="30dp"


                android:layout_marginTop="5dp"


                android:layout_marginRight="30dp"


                android:background="@drawable/edit"


                android:drawableStart="@drawable/ic_email"


                android:hint="Email..."


                android:inputType="textEmailAddress"


                android:padding="8dp" />


 


            <TextView


                android:id="@+id/password"


                android:layout_width="match_parent"


                android:layout_height="wrap_content"


                android:layout_below="@id/login_email"


                android:layout_marginStart="32dp"


                android:layout_marginTop="20dp"


                android:text="Password"


                android:textColor="@color/colorBlack" />


 


            <EditText


                android:id="@+id/login_password"


                android:layout_width="match_parent"


                android:layout_height="wrap_content"


                android:layout_below="@+id/password"


                android:layout_alignParentStart="true"


                android:layout_marginLeft="30dp"


                android:layout_marginTop="5dp"


                android:layout_marginRight="30dp"


                android:background="@drawable/edit"


                android:drawableStart="@drawable/password"


                android:hint="Password..."


                android:inputType="textPassword"


                android:padding="8dp" />


 


            <TextView


                android:id="@+id/forgetp"


                android:layout_width="match_parent"


                android:layout_height="wrap_content"


                android:layout_below="@+id/login_password"


                android:layout_marginStart="210dp"


                android:layout_marginTop="15dp"


                android:layout_marginEnd="23dp"


                android:text="Forget Password?"


                android:textAlignment="center"


                android:textColor="@color/colorPrimaryDark"


                android:textSize="17sp"


                android:textStyle="bold" />


 


            <Button


                android:id="@+id/login_button"


                android:layout_width="match_parent"


                android:layout_height="wrap_content"


                android:layout_below="@+id/forgetp"


                android:layout_marginLeft="30dp"


                android:layout_marginTop="15dp"


                android:layout_marginRight="30dp"


                android:background="@drawable/buttonss"


                android:padding="4dp"


                android:text="Login"


                android:textAllCaps="false"


                android:textColor="@android:color/background_light"


                android:textSize="24sp" />


 


            <TextView


                android:id="@+id/needs_new_account"


                android:layout_width="match_parent"


                android:layout_height="wrap_content"


                android:layout_below="@+id/login_button"


                android:layout_centerHorizontal="true"


                android:layout_marginStart="15dp"


                android:layout_marginTop="20dp"


                android:layout_marginEnd="23dp"


                android:text="Need new Account?Sign Up Here"


                android:textAlignment="center"


                android:textColor="@color/colorPrimary"


                android:textSize="17sp"


                android:textStyle="bold" />


        </RelativeLayout>


 


    </ScrollView>


 


</LinearLayout>








































Working with the LoginActivity.java file. Signing in user with the email and password written by the user. If it fails then we will be showing the error.


mAuth.signInWithEmailAndPassword(emaill, pass).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
            @Override
            public void onComplete(@NonNull Task<AuthResult> task) {

                if (task.isSuccessful()) {
                    loadingBar.dismiss();

                }
                else {
                    loadingBar.dismiss();
                    Toast.makeText(LoginActivity.this,"Login Failed",Toast.LENGTH_LONG).show();
                }
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                loadingBar.dismiss();
                Toast.makeText(LoginActivity.this,"Error Occurred",Toast.LENGTH_LONG).show();
            }
    });


Below is the code for the LoginActivity.java file. 






Java

















































package com.example.socialmediaapp;


 


import android.app.AlertDialog;


import android.app.ProgressDialog;


import android.content.DialogInterface;


import android.content.Intent;


import android.os.Bundle;


import android.text.InputType;


import android.util.Patterns;


import android.view.View;


import android.widget.Button;


import android.widget.EditText;


import android.widget.LinearLayout;


import android.widget.TextView;


import android.widget.Toast;


 


import androidx.annotation.NonNull;


import androidx.appcompat.app.ActionBar;


import androidx.appcompat.app.AppCompatActivity;


 


import com.google.android.gms.tasks.OnCompleteListener;


import com.google.android.gms.tasks.OnFailureListener;


import com.google.android.gms.tasks.Task;


import com.google.firebase.auth.AuthResult;


import com.google.firebase.auth.FirebaseAuth;


import com.google.firebase.auth.FirebaseUser;


import com.google.firebase.database.DatabaseReference;


import com.google.firebase.database.FirebaseDatabase;


 


import java.util.HashMap;


 


public class LoginActivity extends AppCompatActivity {


 


    private EditText email, password, name;


    private Button mlogin;


    private TextView newdnewaccount, reocverpass;


    FirebaseUser currentUser;


    private ProgressDialog loadingBar;


    private FirebaseAuth mAuth;


 


    @Override


    protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);


        setContentView(R.layout.activity_login);


        ActionBar actionBar = getSupportActionBar();


        actionBar.setTitle("Create Account");


        actionBar.setDisplayShowHomeEnabled(true);


        actionBar.setDisplayHomeAsUpEnabled(true);


         


        // initialising the layout items


        email = findViewById(R.id.login_email);


        password = findViewById(R.id.login_password);


        newdnewaccount = findViewById(R.id.needs_new_account);


        reocverpass = findViewById(R.id.forgetp);


        mAuth = FirebaseAuth.getInstance();


        mlogin = findViewById(R.id.login_button);


        loadingBar = new ProgressDialog(this);


        mAuth = FirebaseAuth.getInstance();


         


        // checking if user is null or not


        if (mAuth != null) {


            currentUser = mAuth.getCurrentUser();


        }


 


        mlogin.setOnClickListener(new View.OnClickListener() {


            @Override


            public void onClick(View v) {


                String emaill = email.getText().toString().trim();


                String pass = password.getText().toString().trim();


                 


                // if format of email doesn't matches return null


                if (!Patterns.EMAIL_ADDRESS.matcher(emaill).matches()) {


                    email.setError("Invalid Email");


                    email.setFocusable(true);


 


                } else {


                    loginUser(emaill, pass);


                }


            }


        });


         


        // If new account then move to Registration Activity


        newdnewaccount.setOnClickListener(new View.OnClickListener() {


            @Override


            public void onClick(View v) {


                startActivity(new Intent(LoginActivity.this, RegistrationActivity.class));


            }


        });


         


        // Recover Your Password using email


        reocverpass.setOnClickListener(new View.OnClickListener() {


            @Override


            public void onClick(View v) {


                showRecoverPasswordDialog();


            }


        });


    }


 


    private void showRecoverPasswordDialog() {


        AlertDialog.Builder builder = new AlertDialog.Builder(this);


        builder.setTitle("Recover Password");


        LinearLayout linearLayout = new LinearLayout(this);


        final EditText emailet = new EditText(this);//write your registered email


        emailet.setText("Email");


        emailet.setMinEms(16);


        emailet.setInputType(InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS);


        linearLayout.addView(emailet);


        linearLayout.setPadding(10, 10, 10, 10);


        builder.setView(linearLayout);


        builder.setPositiveButton("Recover", new DialogInterface.OnClickListener() {


            @Override


            public void onClick(DialogInterface dialog, int which) {


                String emaill = emailet.getText().toString().trim();


                beginRecovery(emaill);//send a mail on the mail to recover password


            }


        });


        builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {


            @Override


            public void onClick(DialogInterface dialog, int which) {


                dialog.dismiss();


            }


        });


        builder.create().show();


    }


 


    private void beginRecovery(String emaill) {


        loadingBar.setMessage("Sending Email....");


        loadingBar.setCanceledOnTouchOutside(false);


        loadingBar.show();


        


        // send reset password email


        mAuth.sendPasswordResetEmail(emaill).addOnCompleteListener(new OnCompleteListener<Void>() {


            @Override


            public void onComplete(@NonNull Task<Void> task) {


                loadingBar.dismiss();


                if (task.isSuccessful()) {


                    Toast.makeText(LoginActivity.this, "Done sent", Toast.LENGTH_LONG).show();


                } else {


                    Toast.makeText(LoginActivity.this, "Error Occurred", Toast.LENGTH_LONG).show();


                }


            }


        }).addOnFailureListener(new OnFailureListener() {


            @Override


            public void onFailure(@NonNull Exception e) {


                loadingBar.dismiss();


                Toast.makeText(LoginActivity.this, "Error Failed", Toast.LENGTH_LONG).show();


            }


        });


    }


 


    private void loginUser(String emaill, String pass) {


        loadingBar.setMessage("Logging In....");


        loadingBar.show();


         


        // sign in with email and password after authenticating


        mAuth.signInWithEmailAndPassword(emaill, pass).addOnCompleteListener(new OnCompleteListener<AuthResult>() {


            @Override


            public void onComplete(@NonNull Task<AuthResult> task) {


 


                if (task.isSuccessful()) {


 


                    loadingBar.dismiss();


                    FirebaseUser user = mAuth.getCurrentUser();


 


                    if (task.getResult().getAdditionalUserInfo().isNewUser()) {


                        String email = user.getEmail();


                        String uid = user.getUid();


                        HashMap<Object, String> hashMap = new HashMap<>();


                        hashMap.put("email", email);


                        hashMap.put("uid", uid);


                        hashMap.put("name", "");


                        hashMap.put("onlineStatus", "online");


                        hashMap.put("typingTo", "noOne");


                        hashMap.put("phone", "");


                        hashMap.put("image", "");


                        hashMap.put("cover", "");


                        FirebaseDatabase database = FirebaseDatabase.getInstance();


                         


                        // store the value in Database in "Users" Node


                        DatabaseReference reference = database.getReference("Users");


 


                        // storing the value in Firebase


                        reference.child(uid).setValue(hashMap);


                    }


                    Toast.makeText(LoginActivity.this, "Registered User " + user.getEmail(), Toast.LENGTH_LONG).show();


                    Intent mainIntent = new Intent(LoginActivity.this, DashboardActivity.class);


                    mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);


                    startActivity(mainIntent);


                    finish();


                } else {


                    loadingBar.dismiss();


                    Toast.makeText(LoginActivity.this, "Login Failed", Toast.LENGTH_LONG).show();


                }


            }


        }).addOnFailureListener(new OnFailureListener() {


            @Override


            public void onFailure(@NonNull Exception e) {


                loadingBar.dismiss();


                Toast.makeText(LoginActivity.this, "Error Occurred", Toast.LENGTH_LONG).show();


            }


        });


    }


 


    @Override


    public boolean onSupportNavigateUp() {


        onBackPressed();


        return super.onSupportNavigateUp();


    }


}








































Step 7: Working with the AndroidManifest.xml file 




Navigate to the AndroidManifest.xml file and add the below permission for getting internet permission in the app.




<uses-permission android:name=”android.permission.INTERNET”/>




Also, make the SplashScreen Activity as the welcome screen. Refer to the following code 


<activity android:name=".SplashScreen">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
</activity>


 Below is the complete code for the AndroidManifest.xml file.






XML

















































<?xml version="1.0" encoding="utf-8"?>


<manifest xmlns:android="http://schemas.android.com/apk/res/android"


    package="com.example.socialmediaapp">


 


    <uses-permission android:name="android.permission.INTERNET" />


 


    <application


        android:allowBackup="true"


        android:icon="@mipmap/ic_launcher"


        android:label="@string/app_name"


        android:roundIcon="@mipmap/ic_launcher_round"


        android:supportsRtl="true"


        android:theme="@style/Theme.SocialMediaApp">


        <activity android:name=".DashboardActivity"></activity>


        <activity android:name=".LoginActivity" />


        <activity android:name=".RegistrationActivity" />


        <activity android:name=".SplashScreen">


            <intent-filter>


                <action android:name="android.intent.action.MAIN" />


 


                <category android:name="android.intent.category.LAUNCHER" />


            </intent-filter>


        </activity>


    </application>


 


</manifest>








































Step 8: Working with the colors.xml file


Go to the app > res > values > colors.xml file and use the following color






XML

















































<?xml version="1.0" encoding="utf-8"?>


<resources>


    <color name="colorPrimary">#CC2E76BE</color>


    <color name="colorPrimaryDark">#CC073D74</color>


    <color name="colorAccent">#0A527E</color>


    <color name="colorBlack">#000000</color>


    <color name="colorWhite">#fff</color>


    <color name="colorGray">#F5F1F1</color>


    <color name="colorgray01">#959595</color>


    <color name="colorGray02">#f5f0f0</color>


    <color name="colorGreen">#17581A</color>


    <color name="colorRed">#F4511E</color>


    <color name="btnRed">#E61313</color>


    <color name="btnedit">#2CA7E0</color>


    <color name="neutral">#0a1b97</color>


    <color name="colordrawer">#2B2C2E</color>


</resources>








































Output:


Registration:




Login:




After successfully authenticated the admin can see the users in the firebase console like the following




For all the drawable file used in this article please refer to this link: https://drive.google.com/drive/folders/1M_knOH_ugCuwSP5nkYzeD4dRp-Honzbe?usp=sharing


Below is the file structure after performing these operations:






Note: In this part, there is nothing to do with the DashboardActivity.








			
		


				

			

				

						
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