Android : One Activity To Another Activity
(One Screen To Another Screen).

In this tutorial, We Will See How to Interact With Activity, When a Button is Clicked, Navigate from current screen (current activity) to another screen (another activity).

 Create New Android Project. I Named It screen2screen.
Now Go To Your XML Layout. In Your activity_main.xml  Add One Large TextView And One Button.

Your activity_main.xml Will Look Like Below.

activity_main.xml

<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"

    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" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="28dp"

        android:layout_marginTop="87dp"

        android:text="This Is Main Activity"

        android:textAppearance="?android:attr/textAppearanceLarge" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_centerVertical="true"

        android:text="Click Here To Go Second Activity" />

</RelativeLayout>

Now Create New Activity Or Second Activity.

First Right Clock On Your Project Or On Your Activity Then Click On "New " Option Then Click On "Other".

Then Below Window Will Present On Your Screen.

Then Select Android.

 Now Select Android Activity And Click To Next.

Then Name It To The New Or Second Activity Or Screen Whatever U Want , I Named It Second.

Then Click Finish.

New Activity Will Be Added To Your Project.

Now Go Res-->Layout-->activity_second.xml

Add One TextView To It as This is second activity

Your activity_second.xml will Look Like Below.

<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"

    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=".Second" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="174dp"

        android:text="This Is The Second Activity"

        android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>

Now You Have To Add Code To Main Activities Button To Go To New Activity.

For Switching Between Two Activites Below Code Will Be Useful.

    Intent intent = new Intent(context,Second.class);
                startActivity(intent);  

Add This Code To Your MainActivity.java file.

The File Will Look Like Below.

package arshad.screen2screen;

import android.os.Bundle;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

public class MainActivity extends Activity {

Button second;

final Context context = this;

       @Override

       protected void onCreate(Bundle savedInstanceState) {

              super.onCreate(savedInstanceState);

              setContentView(R.layout.activity_main);

       second = (Button) findViewById(R.id.button1);

              second.setOnClickListener(new OnClickListener() {

                     @Override

                     public void onClick(View arg0) {

                           Intent intent = new Intent(context,Second.class);

                startActivity(intent);  

                     }

              });

       }

       @Override

       public boolean onCreateOptionsMenu(Menu menu) {

              // Inflate the menu; this adds items to the action bar if it is present.

              getMenuInflater().inflate(R.menu.main, menu);

              return true;

       }

}

Now Run Your Program And Check Output on Emulaator.
My Output Screen's Are as Below.

After Clicking On Button.

All The Best :)