Sum of Two Number, using Edittext, Radio button and Button (V2)

Activity_main.XML File

<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"

    tools:context=".MainActivity" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Enter First Number"

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

    <EditText

        android:id="@+id/text1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:ems="10"

        android:inputType="textPersonName" />

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Enter Second Number"

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

    <EditText

        android:id="@+id/text2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:ems="10"

        android:inputType="textPersonName" />

<RadioGroup

        android:id="@+id/radioChoice"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" >

   

    <RadioButton

        android:id="@+id/radioButton1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="ADD" />

    <RadioButton

        android:id="@+id/radioButton2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Subtract" />

</RadioGroup>

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="SUM" />

</LinearLayout>

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MAINACTIVITY.JAVA

package com.example.demo;

import android.app.Activity;

import android.os.Bundle;

import android.text.Editable;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.RadioButton;

import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener

{

           

            Button button1;

            EditText text1,text2;

            RadioButton rb1,rb2;

           

            @Override

            protected void onCreate(Bundle savedInstanceState) {

                        super.onCreate(savedInstanceState);

                        setContentView(R.layout.activity_main);

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

                        text1=(EditText) findViewById(R.id.text1);

                        text2=(EditText) findViewById(R.id.text2);

                        rb1=(RadioButton)findViewById(R.id.radioButton1);

                        rb2=(RadioButton)findViewById(R.id.radioButton2);

                       

                        button1.setOnClickListener(this);

            }

           

            @Override

            public boolean onCreateOptionsMenu(Menu menu) {

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

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

                        return true;

            }

            @Override

            public void onClick(View arg0) {

                       

                        Editable s1 = text1.getText();

                        Editable s2 = text2.getText();

                        int ss=0;

                       

                        if(rb1.isChecked())

                        {

                         ss=Integer.parseInt(s1.toString())+Integer.parseInt(s2.toString());

                        }

                        if(rb2.isChecked())

                        {

                         ss=Integer.parseInt(s1.toString())-Integer.parseInt(s2.toString());

                        }

                       

                        String sss=String.valueOf(ss);

                       

                       

                        Toast msg= Toast.makeText(MainActivity.this, sss,Toast.LENGTH_LONG);

                       

                       

                        msg.show();

                       

                       

            }

}