SignUp Form with Email Validation

You can use intents to transfer the data from one activity to another using. Below is an example to implement a signup form in Android

MainActivity.java

package com.AndroidDevelopmentGuru.registeration_form;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

    EditText text1,text2,text3,text4,text5;
    Button btn;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
   

    btn=(Button)findViewById(R.id.Register);
        btn.setOnClickListener(new OnClickListener() {
      
        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
          
        text1 = (EditText)findViewById(R.id.username);
        text2 = (EditText)findViewById(R.id.email);
        text3= (EditText)findViewById(R.id.contact);
        text4=(EditText)findViewById(R.id.password);
        text5=(EditText)findViewById(R.id.RePass);
      
        String user = text1.getText().toString();
        String email = text2.getText().toString();
        String contact = text3.getText().toString();
        String password = text4.getText().toString();
        String repass = text5.getText().toString();
      
      

        String emailPattern = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+";
        //empty email
          if (TextUtils.isEmpty(email)) {
              //  boolean invalid = true;
                Toast.makeText(MainActivity.this,getResources().getString(R.string.title_empty_email),
                        Toast.LENGTH_SHORT).show();
          }else if(!email.matches(emailPattern))
          {
              Toast.makeText(MainActivity.this,getResources().getString(R.string.title_email_not_valid),
                        Toast.LENGTH_SHORT).show();
          }
                            
          else if(!password.equals(repass)){
              Toast.makeText(MainActivity.this,getResources().getString(R.string.title_notmatch_conform_password) ,
                        Toast.LENGTH_SHORT).show();
      
          }else{
            
                //sending data to next activity thru Intent
                Intent intent = new Intent(MainActivity.this,RegisterActivity.class);
                intent.putExtra("User", user);
                startActivity(intent);
              
              

                Intent intent1 = new Intent(MainActivity.this,RegisterActivity.class);
                intent.putExtra("email", email);
                startActivity(intent);
              

                Intent intent2 = new Intent(MainActivity.this,RegisterActivity.class);
                intent.putExtra("contact", contact);
                startActivity(intent);
              
          }


      
      
        }
    });
   
   
    }


   
}



RegisterActivity.java


package com.AndroidDevelopmentGuru.registeration_form;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;
import android.widget.Toast;

public class RegisterActivity extends Activity {

    TextView tv1,tv2,tv3;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
   
    tv1 =(TextView)findViewById(R.id.user);
    tv2=(TextView)findViewById(R.id.remail);
    tv3 =(TextView)findViewById(R.id.rcontact);
   
   
    //Retrieving data from previous activity
    String user = getIntent().getStringExtra("User");
    tv1.setText(user);
   
   
    String email = getIntent().getStringExtra("email");
    tv2.setText(email);
   
    String contact = getIntent().getStringExtra("contact");
    tv3.setText(contact);
    Toast.makeText(getApplicationContext(), user+" Registered Successfully ", Toast.LENGTH_LONG).show();

   
    }

   

}
 

 
 activity_main.xml


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <EditText
        android:id="@+id/username"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="UserName"
        android:inputType="textPersonName" >

        <requestFocus
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </EditText>

    <EditText
        android:id="@+id/email"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:ems="10"
        android:hint="Email"
        android:inputType="textEmailAddress" />

    <EditText
        android:id="@+id/contact"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:ems="10"
        android:hint="Contact"
        android:inputType="phone" />

    <EditText
        android:id="@+id/password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:ems="10"
        android:hint="Password"
        android:inputType="textPassword" />

    <EditText
        android:id="@+id/RePass"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:ems="10"
          
        android:hint="Confirm Password"
        android:inputType="textPassword" />

   <Button
     android:id="@+id/Register"
     android:layout_width="135dp"
     android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_marginTop="30dp"
     android:text="Register" />


</LinearLayout> 


 activity_register.xml

<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"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".RegisterActivity" >

    <TextView
        android:id="@+id/user"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
       
        android:layout_marginTop="20dp"
        android:text="TextView" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/line" />

    <TextView
        android:id="@+id/remail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
       
        android:layout_marginTop="20dp"
        android:text="TextView" />

    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/line" />

    <TextView
        android:id="@+id/rcontact"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
     
        android:layout_marginTop="20dp"
        android:text="TextView" />

    <ImageView
        android:id="@+id/imageView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/line" />

</LinearLayout>

Download the source code 




Output: