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- Code: Select all
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<EditText android:layout_height="wrap_content" android:id="@+id/First_Operand" android:layout_width="fill_parent" android:inputType="number"></EditText><LinearLayout
android:orientation="horizontal"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
>
<Button android:layout_height="wrap_content" android:id="@+id/Plus" android:text="+" android:layout_width="70dp"></Button>
<Button android:layout_height="wrap_content" android:text="-" android:id="@+id/Subtract" android:layout_width="70dp"></Button><Button android:layout_height="wrap_content" android:id="@+id/multiply" android:text="*" android:layout_width="70dp"></Button>
<Button android:layout_height="wrap_content" android:id="@+id/divide" android:text="/" android:layout_width="70dp"></Button>
</LinearLayout>
<EditText android:layout_height="wrap_content" android:layout_width="fill_parent" android:inputType="number" android:id="@+id/second_Operand"></EditText><Button android:layout_height="wrap_content" android:layout_width="fill_parent" android:text="@string/answerButton" android:id="@+id/New_calculation"></Button>
<EditText android:layout_height="wrap_content" android:id="@+id/finalAnswer" android:layout_width="fill_parent" android:inputType="number"></EditText>
</LinearLayout>
String.xml File is Given Below
- Code: Select all
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, MyActivity!</string>
<string name="plus_string">Add</string>
<string name="app_name">Calculator</string>
<string name="multiply_string">Multiply</string>
<string name="divide_String">Divide</string>
<string name="subtract_string">Subtract</string>
<string name="RadioGroup01">RadioGroup</string>
<string name="answerButton">New Calculation !</string>
<string name="RadioGroup">Radio Groups</string>
</resources>
Java File is Given Below
- Code: Select all
package com.google.calculator;
import android.app.Activity;
import android.os.Bundle;
import android.text.InputType;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class MyActivity extends Activity {
/** Called when the activity is first created. */
EditText firstOperand;
EditText secondOperand;
EditText finalResult;
OnClickListener radioGroup;
double answer;
double first_operand;
double second_operand;
Button addButton;
Button divideButton;
Button multiplyButton;
Button subtractButton;
Button final_calculation;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
firstOperand = (EditText)findViewById(R.id.First_Operand);
secondOperand = (EditText)findViewById(R.id.second_Operand);
finalResult = (EditText)findViewById(R.id.finalAnswer);
firstOperand.setInputType(InputType.TYPE_NULL);
secondOperand.setInputType(InputType.TYPE_NULL);
finalResult.setInputType(InputType.TYPE_NULL);
addButton = (Button)findViewById(R.id.Plus);
addButton.setOnClickListener(new AddbuttonHandler());
divideButton =(Button)findViewById(R.id.divide);
divideButton.setOnClickListener(new DivideButtonHandler());
multiplyButton = (Button)findViewById(R.id.multiply);
multiplyButton.setOnClickListener(new MultiplybuttonHandler());
subtractButton = (Button)findViewById(R.id.Subtract);
subtractButton.setOnClickListener(new SubtractButtonhandler());
final_calculation = (Button)findViewById(R.id.New_calculation);
final_calculation.setOnClickListener(new ResetAll());
}
private class AddbuttonHandler implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
first_operand = Double.parseDouble(firstOperand.getText().toString());
second_operand = Double.parseDouble(secondOperand.getText().toString());
answer = first_operand + second_operand;
finalResult.setText(answer + "");
}
}
private class MultiplybuttonHandler implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
first_operand = Double.parseDouble(firstOperand.getText().toString());
second_operand = Double.parseDouble(secondOperand.getText().toString());
answer = first_operand * second_operand;
finalResult.setText(answer + "");
}
}
private class DivideButtonHandler implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
first_operand = Double.parseDouble(firstOperand.getText().toString());
second_operand = Double.parseDouble(secondOperand.getText().toString());
answer = first_operand / second_operand;
finalResult.setText(answer + "");
}
}
private class SubtractButtonhandler implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
first_operand = Double.parseDouble(firstOperand.getText().toString());
second_operand = Double.parseDouble(secondOperand.getText().toString());
answer = first_operand - second_operand;
finalResult.setText(answer + "");
}
}
private class ResetAll implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
firstOperand.setText("");
secondOperand.setText("");
finalResult.setText("");
}
}
}
