Pb t Android

8/20/2019 Pb t Android

1/17

POLITEKNIK KUCHING SARAWAK

KM 22, JALAN MATANG,

93050 KUCHING, SARAWAK

TEL: 082-845596

http://www.poliku.edu.my

INFORMATION TECHNOLOGY &

COMMUNICATION DEPARTMENT

FP533: MOBILE APPLICATION DEVELOPMENT

PROBLEM BASED TASK REPORT BASIC CALCULATOR

PREPARED BY:

NURUL ALIAH SYAHIDAH BINTI HUT 05DIP13F2018

NURNADYRA AFYZZA BINTI SUZALEE 05DIP13F2030

LECTURER’S NAME:

MR ZAKIR HUSSAIN


2/17

Introduction

Nowadays, many basic calculator app has been developed to ease user to

calculate something that involving numbers that can take anywhere and use

anytime..Before the basic calculator app has been create,user using the electronic

calculator which is a small portable electronic device used to perform both basic

operations of arithmetic and complex mathematical.But regarding of developing the

basic calculator app, these invention are not only for the calculation purpose just like the

the electronic calculator device but this basic calculator app are together in the user

handphone with other app that user can using just touch the screen without only

bringing the electronic calculator device for all the time.

The BasicCalculator app (Figure 1.0) calculates and displays the calculations

between the two numbers that the user entered. As the user enters each digit of a

number by touching the numeric keypad , they will need to click one of the arithmetic

operations that are provided one of the interfaces to get the total of their calculations.

Android Studio software is being used to develop this application. We have used

Ice Cream Sandwich 4.0 and SDK 15.


3/17

SOURCE CODE:

MainActivity.java

package leya.example.org.basiccalculator;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

private EditText num1

, num2;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout. activity_main);

num1 = (EditText) findViewById(R.id.

editText );

num2 = (EditText) findViewById(R.id. editText2 );

}

@Override


4/17

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar

if it is present.

getMenuInflater().inflate(R.menu.

menu_main, menu);

return true ;

}

@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);

}

public void sumar (View v){

int n1 = Integer.

parseInt

(num1

.getText().toString());

int n2 = Integer.

parseInt (num2


int total = n1 + n2;

mostrar (total);

}


5/17

public void restar (View v){

int n1 = Integer.

parseInt (num1


int n2 = Integer.

parseInt (num2


int total = n1 - n2;

mostrar (total);

}

public void multiplicar (View v){

int n1 = Integer. parseInt (num1 .getText().toString());

int n2 = Integer.

parseInt (num2


int total = n1 * n2;

mostrar (total);

}

public void dividir (View v){

int n1 = Integer. parseInt (num1 .getText().toString());

int n2 = Integer.

parseInt (num2


int total = 0;

if (n2


6/17

Toast.

makeText

(MainActivity.

this

, "Total = "

+ total,

Toast. LENGTH_LONG ).show();

}

}


7/17

activity_main.xml

<

TextView

android

:layout_width=

"wrap_content"

android

:layout_height="wrap_content"

android

:text=

"@string/number1"

android

:id="@+id/textView" />

<

EditText

android

:layout_width=

"fill_parent"

android


android

:inputType=

"number"

android

:ems=

"10"

android

:id="@+id/editText" />


8/17

<

TextView

android

:layout_width=

"wrap_content"

android


android

:text=

"@string/number2"

android

:id="@+id/textView2" />

<

Button

android

:layout_width=

"wrap_content"

android


android

:text=

"@string/btnSumar"

android

:id="@+id/button"

android

:onClick=

"sumar"

android

:background="#ff789a" />


9/17

<

Button

android

:layout_width=

"wrap_content"

android


android

:text=

"@string/btnDividir"

android

:id="@+id/button4"

android

:onClick=

"dividir"

android

:background="#FFFFB9DD" />


10/17

AndroidManifest.xml

<

manifest

xmlns:

android =

"http://schemas.android.com/apk/res/android"

package=

"leya.example.org.basiccalculator" >

<

activity

android

:name=

".MainActivity"

android

:label="@string/app_name" >

<

action

android :name="android.intent.action.MAIN" />

<

category

android :name="android.intent.category.LAUNCHER" />


11/17

strings.xml

<

resources>

BasicCalculator

Settings

Number 1:

Number 2:

+

-

*

/


12/17

OUTPUT:

Interface

Figure 1.0: The above figure shows the interface of the calculator

The calculator consists of four different kinds of arithmetic operations which are

addition, subtraction, multiplication and division. The user need to ‘touch’ the EditText in

Number 1 to fill in the number 16 and next,Number 2 for the number 52.After fill the both

numbers.user can choose any operation to get total.


13/17

Process 1: Addition

Figure 1.2: The above figure shows the process of addition

For the first process,when the user enter the number 12 for the first empty space and the fill the second empty space with number 11,after that user will click on the

addition to get the total for both number.When the process addition success, the dialog

pop up the total of both number is 23.


14/17

Process 2: Subtraction

Figure 1.3: The above figure shows the process of subtraction

For the second,when the user enter the number 25 for the first empty space and

the fill the second empty space with number 11,after that user will click on the addition

to get the total for both number.When the process subtraction is successful, the dialog

pop up the total of both number is 14.


15/17

Process 3: Multiplication

Figure 1.4: The above figure shows the process of multiplication

Next,for the third process,when the user enter the number 15 for the first empty

space and the fill the second empty space with number 11,after that user will click on

the addition to get the total for both number.When the process subtraction is successful,

the dialog pop up the total of both number is 165.


16/17

Process 4: Division

Figure 1.5: The above figure shows the process of division

Finally for the last process,when the user enter the number 15 for the first empty

space and the fill the second empty space with number 5,after that user will click on the

addition to get the total for both number.When the process division is successful, the

dialog pop up the total of both number is 3.


17/17

Conclusion

In conclusion, the basic calculator has been created nowadays is for ease the

user to calculate any calculation that involving numbers such as addition,subtraction, multiplication, and division which is user can user use the calculator with touch

recognition than using the manual calculation which is using paper.Regarding from

that,this calculator are already in our marketable when as we can see almost all touch

screen handphone have these calculator.These can make user can take anywhere and

use everywhere and anytime.

The benefits this invention can improve our productivity as human being to

successful in life because day by day will be come out with another invention so these

will be the first enhancement for the inventor to brainstorm their idea to create a

different idea for the future.

Pb t Android

Documents