Android Simple Calculator Source Code

"Android Simple Calculator Source Code", Edit main.xml file and activity file..!Below I addressed two file main.xml and P1Activity.java file for simple android calculator source code, You can easily copy and paste this code into your eclipse or android studio.

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/n1"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <EditText
        android:id="@+id/ed1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number" >

        <requestFocus />
    </EditText>

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/n2"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <EditText
        android:id="@+id/ed2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/a"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <EditText
        android:id="@+id/ed3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number" />

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <TableRow
            android:id="@+id/tableRow1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >



            <Button
                android:id="@+id/pluse"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/pluse" />


            <Button
                android:id="@+id/min"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/minus" />

            <Button
                android:id="@+id/mul"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/mul" />
            <Button
                android:id="@+id/div"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/div" />

        </TableRow>

    </LinearLayout>

</LinearLayout>

P1Activity.java

package com.p1;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class P1Activity extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
 EditText ed1,ed2,ed3;
 Button pluse,min,mul,div;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ed1=(EditText)findViewById(R.id.ed1);
        ed2=(EditText)findViewById(R.id.ed2);
        ed3=(EditText)findViewById(R.id.ed3);
        pluse=(Button)findViewById(R.id.pluse);
        min=(Button)findViewById(R.id.min);
        mul=(Button)findViewById(R.id.mul);
        div=(Button)findViewById(R.id.div);
        pluse.setOnClickListener(this);
        min.setOnClickListener(this);
        mul.setOnClickListener(this);
        div.setOnClickListener(this);
        
    }
 public void onClick(View arg0) {
  // TODO Auto-generated method stub
  
  String st1=ed1.getText().toString();
  String st2=ed2.getText().toString();
  int p=Integer.parseInt(st1);
  int r=Integer.parseInt(st2);
  
  if(arg0.getId()==R.id.pluse)
  {
   double a=p+r;
   
   ed3.setText(""+a);
   
  }
  else if(arg0.getId()==R.id.min)
  {
   double a=p-r;
   
   ed3.setText(""+a);
   
  }
  else if(arg0.getId()==R.id.mul)
  {
   double a=p*r;
   
   ed3.setText(""+a);
   
  
  }
  else if(arg0.getId()==R.id.div)
  {
   double a=p/r;
   
   ed3.setText(""+a);
   
  }
  else
  {
   
  }
 }
}