Simplest calculator app using android studio android workshop
1 like2,564 views
This document contains code and details for an Android app that allows users to add two numbers. It includes the Java code to build the calculator functionality and layout the user interface. The UI contains text fields for two numbers, a button to add them, and a result field. The code handles parsing the input, performing the addition, and displaying the output. It also specifies the linear layout with labeled text fields, button, and result display.
Simplest calculator app using android studio android workshop
- 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" />
- 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 Emarald Mall (Big Bazar Building) Mavoor Road, Kozhikode, Kerala, India. Ph: + 91 – 495 40 25 550 NC Complex, Near Bus Stand Mukkam, Kozhikode, Kerala, India. Ph: + 91 – 495 40 25 550 Cafit Square IT Park, Hilite Business Park, Kozhikode Kerala, India. Email: info@baabtra.com TBI - NITC NIT Campus, Kozhikode. Kerala, India. Start up Village Eranakulam, Kerala, India. Start up Village UL CC Kozhikode, Kerala