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package com.calculator.ayush.calculator;
import android.graphics.Color;
import android.renderscript.Sampler;
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.text.InputType;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
EditText ed1;
TextView tv1;
Boolean nextNumber=Boolean.FALSE;
Boolean newNumber=Boolean.TRUE;
Boolean decimal=Boolean.FALSE;
Boolean operatorPressed=Boolean.FALSE;
double answer=0;
double numberTwo=0;
String value;
String operator="";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ed1=(EditText) findViewById(R.id.outputField);
ed1.setInputType(InputType.TYPE_NULL);
tv1=(TextView)findViewById(R.id.textView2);
}
@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_main, menu);
return true;
}
public void setFunctionView(){
if (operator.equals("+")) {
tv1.setText(" +");
} else if (operator.equals("-")) {
tv1.setText(" -");
} else if (operator.equals("x")) {
tv1.setText(" x");
} else if (operator.equals("/")) {
tv1.setText(" /");
} else {
tv1.setText(" =");
}
}
public void clearField(View v){
nextNumber=Boolean.FALSE;
newNumber=Boolean.TRUE;
decimal=Boolean.FALSE;
answer=0;
numberTwo=0;
ed1.setText("");
tv1.setText("");
v=getWindow().getDecorView();
v.setBackgroundColor(Color.WHITE);
}
public void one(View v) {
if(newNumber){
ed1.setText("1");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"1");
}
}
public void two(View v){
if(newNumber){
ed1.setText("2");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"2");
}
}
public void three(View v){
if(newNumber){
ed1.setText("3");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"3");
}
}
public void four(View v){
if(newNumber){
ed1.setText("4");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"4");
}
}
public void five(View v){
if(newNumber){
ed1.setText("5");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"5");
}
}
public void six(View v){
if(newNumber){
ed1.setText("6");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"6");
}
}
public void seven(View v){
if(newNumber){
ed1.setText("7");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"7");
}
}
public void eight(View v){
if(newNumber){
ed1.setText("8");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"8");
}
}
public void nine(View v){
if(newNumber){
ed1.setText("9");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
ed1.setText(value+"9");
}
}
public void zero(View v){
if(newNumber){
ed1.setText("0");
newNumber=Boolean.FALSE;
decimal=Boolean.FALSE;
operatorPressed=Boolean.FALSE;
}else{
value = ed1.getText().toString();
if(value.compareTo("0")!=0){
ed1.setText(value+"0");
}
}
}
public void deleteFromField(View v){
value = ed1.getText().toString();
if(operatorPressed){
operator="";
tv1.setText("");
operatorPressed=Boolean.FALSE;
newNumber = Boolean.FALSE;
v = getWindow().getDecorView();
v.setBackgroundColor(Color.WHITE);
}else {
if (value.length() > 0) {
if (value.charAt(value.length() - 1) == '.') {
decimal = Boolean.FALSE;
}
value = value.substring(0, value.length() - 1);
}
ed1.setText(value);
newNumber = Boolean.FALSE;
}
}
public void putDot(View v){
if(newNumber){
ed1.setText(".");
newNumber=Boolean.FALSE;
decimal=Boolean.TRUE;
}else{
if(!decimal) {
value = ed1.getText().toString();
ed1.setText(value + ".");
decimal = Boolean.TRUE;
}
}
}
public void calculateAns(){
if (operator.equals("+")) {
answer = answer + numberTwo;
} else if (operator.equals("-")) {
answer = answer - numberTwo;
} else if (operator.equals("x")) {
answer = answer * numberTwo;
} else if (operator.equals("/")) {
if(numberTwo==0){
answer=0;
}else {
answer = answer / numberTwo;
}
} else {
answer=numberTwo;
}
operator="";
}
public void addType1(View v) {
if(!operatorPressed) {
value = ed1.getText().toString();
operatorPressed=Boolean.TRUE;
if (value.compareTo("") != 0) {
if (!nextNumber) {
answer = Double.parseDouble(value);
nextNumber = Boolean.TRUE;
newNumber = Boolean.TRUE;
operator = "+";
decimal = Boolean.FALSE;
} else {
value = ed1.getText().toString();
if (value.compareTo("") != 0) {
numberTwo = Double.parseDouble(value);
calculateAns();
operator = "+";
newNumber = Boolean.TRUE;
decimal = Boolean.FALSE;
}
}
setFunctionView();
v = getWindow().getDecorView();
v.setBackgroundColor(Color.GREEN);
}
}
}
public void subtractType1(View v){
if(!operatorPressed) {
value = ed1.getText().toString();
operatorPressed = Boolean.TRUE;
if (value.compareTo("") != 0) {
if (!nextNumber) {
answer = Double.parseDouble(value);
nextNumber = Boolean.TRUE;
newNumber = Boolean.TRUE;
decimal = Boolean.FALSE;
operator = "-";
} else {
value = ed1.getText().toString();
if (value.compareTo("") != 0) {
numberTwo = Double.parseDouble(value);
calculateAns();
operator = "-";
newNumber = Boolean.TRUE;
}
}
setFunctionView();
v = getWindow().getDecorView();
v.setBackgroundColor(Color.RED);
}
}
}
public void multiplyType1(View v){
if(!operatorPressed) {
value = ed1.getText().toString();
operatorPressed = Boolean.TRUE;
if (value.compareTo("") != 0) {
if (!nextNumber) {
answer = Double.parseDouble(value);
nextNumber = Boolean.TRUE;
newNumber = Boolean.TRUE;
decimal = Boolean.FALSE;
operator = "x";
} else {
value = ed1.getText().toString();
if (value.compareTo("") != 0) {
numberTwo = Double.parseDouble(value);
calculateAns();
operator = "x";
newNumber = Boolean.TRUE;
}
}
setFunctionView();
v = getWindow().getDecorView();
v.setBackgroundColor(Color.BLUE);
}
}
}
public void divType1(View v){
if(!operatorPressed) {
value = ed1.getText().toString();
operatorPressed = Boolean.TRUE;
if (value.compareTo("") != 0) {
if (!nextNumber) {
answer = Double.parseDouble(value);
nextNumber = Boolean.TRUE;
newNumber = Boolean.TRUE;
decimal = Boolean.FALSE;
operator = "/";
} else {
value = ed1.getText().toString();
if (value.compareTo("") != 0) {
numberTwo = Double.parseDouble(value);
calculateAns();
operator = "/";
newNumber = Boolean.TRUE;
}
}
setFunctionView();
v = getWindow().getDecorView();
v.setBackgroundColor(Color.YELLOW);
}
}
}
public void equals(View v) {
value=ed1.getText().toString();
if(value.compareTo("")!=0) {
numberTwo = Double.parseDouble(value);
calculateAns();
}
operator="";
tv1.setText("");
setFunctionView();
ed1.setText("" + answer);
newNumber=Boolean.TRUE;
decimal=Boolean.TRUE;
operatorPressed=Boolean.FALSE;
}
@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);
}
}
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