/
Activity5.java
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/
Activity5.java
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package com.example.devi.cgpacalculator;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class Activity5 extends AppCompatActivity implements OnClickListener
{
//Defining the Views
EditText Num1;
EditText Num2;
EditText Num3;
EditText Num4;
EditText Num5;
Button Add;
TextView Result;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_5);
//Referring the Views
Num1 = (EditText) findViewById(R.id.editText1);
Num2 = (EditText) findViewById(R.id.editText2);
Num3 = (EditText) findViewById(R.id.editText3);
Num4 = (EditText) findViewById(R.id.editText4);
Num5 = (EditText) findViewById(R.id.editText5);
Add = (Button) findViewById(R.id.Add);
Result = (TextView) findViewById(R.id.textView);
// set a listener
Add.setOnClickListener(this);
}
@Override
public void onClick (View v)
{
float num1 = 0;
float num2 = 0;
float num3 = 0;
float num4 = 0;
float num5 = 0;
float result = 0;
String answer;
// check if the fields are empty
if (TextUtils.isEmpty(Num1.getText().toString()) || TextUtils.isEmpty(Num2.getText().toString()))
return;
// read EditText and fill variables with numbers
num1 = Float.parseFloat(Num1.getText().toString());
num2 = Float.parseFloat(Num2.getText().toString());
num3 = Float.parseFloat(Num3.getText().toString());
num4 = Float.parseFloat(Num4.getText().toString());
num5 = Float.parseFloat(Num5.getText().toString());
// defines the button that has been clicked and performs the corresponding operation
// write operation into oper, we will use it later for output
result=((num1*26)+(num2*28)+(num3*27)+(num4*25)+(num5*25))/(26+28+27+25+25);
answer=String.format("%.02f",result);
// form the output line
Result.setText("Your CGPA is "+answer);
}
}