In many apps, we got a feature to login using our email and password. Sometimes it happens that we forget the password and most of the time there reset our password. Here we are going to implement the same feature to Reset our password using Firebase Authentication. You may refer to the following article User authentication using Firebase in Android. A sample video is given below to get an idea about what we are going to do in this article. Note that we are going to implement this project using the Java language.
Step by Step Implementation
Step 1: Working with the UI part
Go to the activity_login.xml file and refer to the following code. Below is the code for the activity_login.xml file.
XML
<?xml version="1.0" encoding="utf-8"?><RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".LoginActivity"> <include android:id="@+id/login_toolbar" layout="@layout/app_bar_layout" /> <TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentStart="true" android:layout_alignParentTop="true" android:layout_marginStart="19dp" android:layout_marginTop="96dp" android:textSize="25dp" android:text="Login to Your Account" /> <EditText android:id="@+id/logemail" android:layout_width="267dp" android:layout_height="wrap_content" android:layout_alignParentStart="true" android:layout_alignParentTop="true" android:layout_marginStart="36dp" android:layout_marginTop="198dp" android:ems="10" android:hint="Email" android:inputType="textEmailAddress" /> <EditText android:id="@+id/logpass" android:layout_width="259dp" android:layout_height="58dp" android:layout_alignParentStart="true" android:layout_alignParentTop="true" android:layout_marginStart="32dp" android:layout_marginTop="261dp" android:ems="10" android:hint="Password" android:inputType="textPassword" /> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/forgetpass" android:layout_alignParentStart="true" android:layout_alignParentTop="true" android:layout_marginStart="132dp" android:layout_marginTop="351dp" android:text="Forget Password"/> <Button android:id="@+id/logbut" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentStart="true" android:layout_alignParentTop="true" android:layout_marginStart="222dp" android:layout_marginTop="387dp" android:background="@color/colorPrimary" android:text="Login" android:textSize="15dp" /></RelativeLayout> |
Step 2: Working with the LoginActivity.java file
Go to the LoginActivity.java file and refer to the following code. Below is the code for the LoginActivity.java file
Java
import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity;import androidx.appcompat.widget.Toolbar;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.text.TextUtils;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 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;public class LoginActivity extends AppCompatActivity { private EditText memail; private EditText mpass; private FirebaseAuth mAuth; private Toolbar mtoolbar; private Button login; TextView forgetpass; public ProgressDialog loginprogress; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); mtoolbar=(Toolbar)findViewById(R.id.login_toolbar); setSupportActionBar(mtoolbar); mAuth = FirebaseAuth.getInstance(); getSupportActionBar().setTitle("Login"); forgetpass=findViewById(R.id.forgetpass); getSupportActionBar().setDisplayHomeAsUpEnabled(true); loginprogress=new ProgressDialog(this); memail=(EditText)findViewById(R.id.logemail); mpass=(EditText)findViewById(R.id.logpass); // click on forget password text forgetpass.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { showRecoverPasswordDialog(); } }); login=(Button)findViewById(R.id.logbut); login.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String email=memail.getText().toString(); String password =mpass.getText().toString(); if(!TextUtils.isEmpty(email)||!TextUtils.isEmpty(password)){ loginprogress.setTitle("Logging In"); loginprogress.setMessage("Please Wait "); loginprogress.setCanceledOnTouchOutside(false); loginprogress.show(); loginUser(email,password); } } }); } ProgressDialog loadingBar; 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 the email using which you registered 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); // Click on Recover and a email will be sent to your registered email id builder.setPositiveButton("Recover", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { String email=emailet.getText().toString().trim(); beginRecovery(email); } }); builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); builder.create().show(); } private void beginRecovery(String email) { loadingBar=new ProgressDialog(this); loadingBar.setMessage("Sending Email...."); loadingBar.setCanceledOnTouchOutside(false); loadingBar.show(); // calling sendPasswordResetEmail // open your email and write the new // password and then you can login mAuth.sendPasswordResetEmail(email).addOnCompleteListener(new OnCompleteListener<Void>() { @Override public void onComplete(@NonNull Task<Void> task) { loadingBar.dismiss(); if(task.isSuccessful()) { // if isSuccessful then done message will be shown // and you can change the password 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(); } }); } public void loginUser(String email,String password){ mAuth.signInWithEmailAndPassword(email,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() { @Override public void onComplete(@NonNull Task<AuthResult> task) { if(task.isSuccessful()){ loginprogress.dismiss(); Intent mainIntent = new Intent(LoginActivity.this,MainActivity.class); mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TASK); startActivity(mainIntent); finish(); } else { loginprogress.hide(); Toast.makeText(LoginActivity.this,"Cannot Sign In..Please Try Again",Toast.LENGTH_LONG); } } }); }} |
Output:
GitHub link: https://github.com/Anni1123/LoginDemo
