2. Date: 6- Feb -2015
First Android App
info@baabtra.comharis@baabtra.com

3. ❏ Calculator APP with simple ADD
functionality
Contents

5. package com.baabtra.baabtracalc;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.Button;
LoadingScreen.java

6. public class LoadingScreen extends ActionBarActivity implements
View.OnClickListener {
Button mButton;
EditText Txt_FirstNumber, Txt_SecondNumber, Txt_Result;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_loading_screen);

7. mButton = (Button)findViewById(R.id.button);
Txt_FirstNumber = (EditText)findViewById(R.id.editText);
Txt_SecondNumber = (EditText)findViewById(R.id.
editText2);
Txt_Result = (EditText)findViewById(R.id.editText3);
mButton.setOnClickListener(this);
}

8. public void onClick(View v) {
int int_fn = Integer.parseInt(Txt_FirstNumber.getText().
toString());
int int_sn= Integer.parseInt(Txt_SecondNumber.getText().
toString());
int int_tmp_result = int_fn + int_sn;
Txt_Result.setText("Result : " + Integer.toString
(int_tmp_result));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is
present.
getMenuInflater().inflate(R.menu.menu_loading_screen,
menu);
return true;
}

9. @Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

10. ● Linear Layout
● Heading - Baabtranz Calculator
● three text boxes - First number, Second
Number and Result
● Thee labels - TextViews - First Number,
Second Number and Result
● One Button - Add button
Lay out of the app

14. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent" tools:context=".LoadingScreen"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/heading"
android:id="@+id/textView3"
android:background="#ff1623ff"
android:capitalize="characters"
android:clickable="false"
android:textColor="#ff35ffb6"
android:textSize="@dimen/abc_action_bar_progress_bar_size" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text= "@string/first_number"
android:id="@+id/textView2" />

15. <EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="@+id/editText" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/second_number"
android:id="@+id/textView4" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="@+id/editText2" />

16. <TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text= "@string/Result"
android:id="@+id/textView" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="number"
android:id="@+id/editText3" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="ADD"
android:id="@+id/button" />
</LinearLayout>

17. US UK UAE
7002 Hana Road,
Edison NJ 08817,
United States of America.
90 High Street,
Cherry Hinton,
Cambridge, CB1 9HZ,
United Kingdom.
Suite No: 51, Oasis Center,
Sheikh Zayed Road, Dubai,
UAE
Email to info@baabtra.com or Visit baabtra.com
Looking for learning coding or software
engineering?

18. India Centres
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Mavoor Road, Kozhikode,
Kerala, India.
Ph: + 91 – 495 40 25 550
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