Prime & Neon Number

------------------------------
ActivityMain (XML)
----------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    tools:context="com.example.user.secondlab.MainActivity"
    android:weightSum="1">

    <Button
        android:id="@+id/b1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="PRIME" />

    <Button
        android:id="@+id/b2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="NEON" />

</LinearLayout>


===============================


------------------------------
Activity Main 2 (XML)
-----------------------

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    tools:context="com.example.user.secondlab.Main2Activity">


    <LinearLayout

        android:layout_width="match_parent"
        android:layout_height="wrap_content">


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Number: "
            android:textSize="25dp"/>

        <EditText
            android:id="@+id/e1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

    </LinearLayout>

    <Button
        android:id="@+id/b3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Check" />

</LinearLayout>


=================================


------------------------------
Activity Main 3 (Neon) (XML)
---------------------------------


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    tools:context="com.example.user.secondlab.neon">


    <LinearLayout

        android:layout_width="match_parent"
        android:layout_height="wrap_content">


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Neon Number: "
            android:textSize="25dp"/>

        <EditText
            android:id="@+id/e2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

    </LinearLayout>


    <Button
        android:id="@+id/b4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Check" />

</LinearLayout>



==================================================



------------------------------
MainActivity (Java)
----------------------
package com.example.user.secondlab;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    Button bnext;
    Button cnext;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        bnext= (Button) findViewById(R.id.b1);
        cnext= (Button) findViewById(R.id.b2);

        bnext.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent a = new Intent(MainActivity.this, Main2Activity.class);
                startActivity(a);
                finish();
            }
        });

        cnext.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent c = new Intent(MainActivity.this, neon.class);
                startActivity(c);
                finish();
            }
        });

    }
}


==========================


------------------------------
Main2Activity (Java)
---------------------
package com.example.user.secondlab;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class Main2Activity extends AppCompatActivity {

    Button secbtn;
    EditText edit1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        secbtn = (Button) findViewById(R.id.b3);


        secbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                edit1 = (EditText) findViewById(R.id.e1);
                String temp = edit1.getText().toString();
                int num=Integer.parseInt(temp);

                int flag=0;
                for(int i=2; i<num; i++)
                {
                    if (num% i==0)
                        flag=1;
                }

                if (flag==1)
                {
                    Toast.makeText(Main2Activity.this, "Not A Prime Number", Toast.LENGTH_SHORT).show();
                }
                else Toast.makeText(Main2Activity.this, "Prime Number", Toast.LENGTH_SHORT).show();


            }
        });

    };
}

===================================

------------------------------
MainActivity (Neon) (Java)
------------------------------

package com.example.user.secondlab;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class neon extends AppCompatActivity {

    Button nbtn;
    EditText edit2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_neon);

        nbtn = (Button) findViewById(R.id.b4);

        nbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                edit2 = (EditText) findViewById(R.id.e2);
                String temp = edit2.getText().toString();
                int num=Integer.parseInt(temp);


                int result = num * num;
                int sum=0;
                for(int i=result; i>0; i=i/10)
                {
                    sum=sum+(i%10);
                }

                if(sum==num)
                {
                    Toast.makeText(neon.this, "Neon Number", Toast.LENGTH_SHORT).show();
                }
                else Toast.makeText(neon.this, "Not A Neon Number", Toast.LENGTH_SHORT).show();
            }
        });

    }
}

=================