Ok so i am bulding this application that calculates 3 input boxes. i am getting a NaN when doing some calculations with 0 values.
here is the main.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/ScrollView01" >
<AbsoluteLayout android:orientation="vertical"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<EditText android:id="@+id/InputNumber01"
android:numeric="integer|decimal" android:imeOptions="actionNext"
android:textStyle="bold" android:hint="Service Call"
android:layout_x="5dip" android:layout_y="5px" android:layout_height="55dip"
android:textSize="20dip" android:layout_width="195dip"
android:selectAllOnFocus="true" android:inputType="numberDecimal"/>
<EditText android:id="@+id/InputNumber02"
android:numeric="integer|decimal" android:inputType="numberDecimal"
android:textStyle="bold" android:hint="Parts" android:layout_x="5dip"
android:layout_y="90px" android:layout_height="55dip"
android:textSize="20dip" android:layout_width="195dip"
android:selectAllOnFocus="true" android:imeOptions="actionNext"/>
<EditText android:id="@+id/InputNumber03" android:numeric="integer|decimal"
android:inputType="numberDecimal" android:textStyle="bold"
android:hint="Labor" android:layout_x="5dip" android:layout_y="175px"
android:layout_height="55dip" android:textSize="20dip"
android:layout_width="195dip" android:selectAllOnFocus="true"
android:imeOptions="actionDone"/>
<Button android:text="Calculate" android:id="@+id/actionButton"
android:textStyle="bold" android:layout_height="50dip"
android:layout_width="fill_parent" android:layout_y="300px"
android:textSize="15dip" />
<TextView android:id="@+id/TextResult" android:layout_height="wrap_content"
android:numeric="integer|decimal" android:textStyle="bold"
android:layout_width="85dip" android:layout_x="225dip"
android:layout_y="175dip" android:gravity="left" android:textSize="18dip"
android:textColor="#1d9ee2" />
<TextView android:layout_height="wrap_content" android:id="@+id/TextView04"
android:text="Total:" android:textStyle="bold" android:gravity="right"
android:layout_width="55dip" android:layout_y="175dip"
android:layout_x="165dip" android:textSize="18dip" />
<TextView android:layout_height="wrap_content" android:id="@+id/TextView05"
android:text="Total Labor:" android:layout_y="260dip"
android:layout_width="95dip" android:layout_x="5dip" android:gravity="right" />
<TextView android:text="@+id/TotalLabor"
android:layout_height="wrap_content" android:layout_width="wrap_content"
android:id="@+id/TotalLabor" android:layout_y="260dip"
android:layout_x="110dip" />
<TextView android:layout_height="wrap_content" android:id="@+id/TextView06"
android:layout_x="5dip" android:text="Total Services:"
android:layout_y="280dip" android:layout_width="95dip"
android:gravity="right" />
<TextView android:layout_height="wrap_content"
android:layout_width="wrap_content" android:id="@+id/TotalServices"
android:text="@+id/TotalServices" android:layout_y="280dip"
android:layout_x="110dip" />
<TextView android:id="@+id/TextView07" android:text="SC Tax %:"
android:layout_y="300dip" android:layout_height="wrap_content"
android:layout_x="5dip" android:layout_width="95dip" android:gravity="right" />
<TextView android:text="@+id/TextView08"
android:layout_height="wrap_content" android:layout_width="wrap_content"
android:id="@+id/SCTaxPercent" android:layout_y="300dip"
android:layout_x="110dip" />
<TextView android:layout_height="wrap_content" android:id="@+id/TextView08"
android:text="Sales Tax:" android:textStyle="bold" android:layout_y="175dip"
android:layout_x="5dip" android:textSize="18dip"
android:layout_width="wrap_content" android:gravity="right" />
<TextView android:layout_height="wrap_content" android:id="@+id/SalesTax"
android:textStyle="bold" android:numeric="integer|decimal"
android:layout_y="175dip" android:gravity="left"
android:layout_width="65dip" android:textSize="18dip"
android:layout_x="100dip" />
<TextView android:layout_height="wrap_content" android:id="@+id/TextView09"
android:text="SC Taxable:" android:layout_y="320dip"
android:layout_x="5dip" android:layout_width="95dip" android:gravity="right" />
<TextView android:layout_height="wrap_content" android:text="@+id/TextView10"
android:layout_width="wrap_content" android:id="@+id/ScTaxable"
android:layout_y="320dip" android:layout_x="110dip" />
<TextView android:layout_height="wrap_content" android:id="@+id/TextView10"
android:text="Taxable:" android:layout_y="340dip"
android:layout_width="95dip" android:layout_x="5dip" android:gravity="right" />
<TextView android:layout_height="wrap_content" android:text="@+id/TextView11"
android:layout_width="wrap_content" android:id="@+id/Taxable"
android:layout_y="340dip" android:layout_x="110dip" />
<EditText android:layout_height="wrap_content" android:text="9.50"
android:layout_width="90dip" android:id="@+id/SalesTaxValue"
android:layout_x="5dip" android:layout_y="430dip" android:numeric="integer|decimal"
android:selectAllOnFocus="true" />
<TextView android:layout_height="wrap_content" android:id="@+id/TextView01"
android:layout_width="wrap_content" android:layout_x="5dip"
android:text="Sales Tax Value:" android:layout_y="407dip" />
</AbsoluteLayout>
</ScrollView>
and this is the calculator.java
package com.Eddie.TaxCalculator;
import java.text.NumberFormat;
import com.Eddie.TaxCalculator.R;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class Calculator extends Activity {
private Button calculateButton;
private EditText inputField01;
private EditText inputField02;
private EditText inputField03;
private EditText salesTaxValue;
private double serviceCall;
private double parts;
private double labor;
private double salestaxvalue;
String zero ="0";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
calculateButton = (Button) findViewById(R.id.actionButton);
calculateButton.setOnClickListener(doSomethingNow);
this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
}
private OnClickListener doSomethingNow = new OnClickListener() {
public void onClick(View arg0) {
inputField01 = (EditText) findViewById(R.id.InputNumber01);
inputField02 = (EditText) findViewById(R.id.InputNumber02);
inputField03 = (EditText) findViewById(R.id.InputNumber03);
salesTaxValue = (EditText) findViewById(R.id.SalesTaxValue);
if (inputField01.getText().toString().length()==0)
{
inputField01.setText(zero);
Toast toast = Toast.makeText(getApplicationContext(),
"Service Call TextBox was empty.",
Toast.LENGTH_LONG);
toast.show();
}
if(inputField02.getText().toString().length()==0)
{
inputField02.setText(zero);
Toast toast = Toast.makeText(getApplicationContext(),
"Parts TextBox was empty.",
Toast.LENGTH_LONG);
toast.show();
}
if(inputField03.getText().toString().length()==0)
{
inputField03.setText(zero);
Toast toast = Toast.makeText(getApplicationContext(),
"Labor TextBox was empty.",
Toast.LENGTH_LONG);
toast.show();
}
//service Call is 0
if (inputField01.getText().toString().equals("0"))
{
Toast toast = Toast.makeText(getApplicationContext(),
"Service Call TextBox value is 0.",
Toast.LENGTH_SHORT);
//toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.show();
}
//Parts is 0
if (inputField02.getText().toString().equals("0"))
{
//inputField01.setText("10");
Toast toast = Toast.makeText(getApplicationContext(),
"Parts TextBox value is 0.",
Toast.LENGTH_SHORT);
toast.show();
}
//Labor is 0
if (inputField03.getText().toString().equals("0"))
{
//inputField01.setText("10");
Toast toast = Toast.makeText(getApplicationContext(),
"Labor TextBox value is 0.",
Toast.LENGTH_SHORT);
toast.show();
}
serviceCall = Double.parseDouble(inputField01.getText().toString());
parts = Double.parseDouble(inputField02.getText().toString());
labor = Double.parseDouble(inputField03.getText().toString());
salestaxvalue = Double.parseDouble(salesTaxValue.getText().toString());
NumberFormat numberFormat = NumberFormat.getInstance();
numberFormat.setMaximumFractionDigits(2);
numberFormat.setGroupingUsed(false);
TextView totalLabor = (TextView)findViewById(R.id.TotalLabor);
Double totalLaborResults = serviceCall + labor;
String totalLaborCalcInt = numberFormat.format(totalLaborResults).toString();
totalLabor.setText (totalLaborCalcInt);
TextView totalServices = (TextView)findViewById(R.id.TotalServices);
Double totalServicesResults = (parts + labor);
String totalServicesCalcInt = numberFormat.format(totalServicesResults);
totalServices.setText (totalServicesCalcInt);
TextView servicecallTaxpercent = (TextView)findViewById(R.id.SCTaxPercent);
Double scTaxPercentResults = (parts / totalServicesResults);
String serviceCallPercentCalcInt = numberFormat.format(scTaxPercentResults).toString();
servicecallTaxpercent.setText (serviceCallPercentCalcInt);
TextView scTaxable = (TextView)findViewById(R.id.ScTaxable);
Double scTaxableResults = (serviceCall * scTaxPercentResults);
String serviceCallTaxableCalcInt =numberFormat.format (scTaxableResults).toString();
scTaxable.setText (serviceCallTaxableCalcInt);
TextView taxable = (TextView)findViewById(R.id.Taxable);
Double taxableResults = (parts + scTaxableResults);
String taxableCalcInt =numberFormat.format (taxableResults).toString();
taxable.setText (taxableCalcInt);
TextView salesTax = (TextView)findViewById(R.id.SalesTax);
Double salesTaxResults = (taxableResults * salestaxvalue) /100;
String salesTaxCalcInt = numberFormat.format (salesTaxResults).toString();
salesTax.setText (salesTaxCalcInt);
TextView textResult = (TextView)findViewById(R.id.Total);
Double additionResults = (salesTaxResults + parts+ serviceCall + labor);
String TotalCalcInt = numberFormat.format(additionResults).toString();
textResult.setText (TotalCalcInt);
}
};
};
when entering a number in input 1 (service Call) and zeros in the two other inputs i get a NaN Total.
if All input Boxes are zero value i also get a NaN total, NaN sale Tax, NaN scTax % textview (sc is short of Service Call)
NaN scTaxable, NaN taxable.
could anyone help me find this but i’ve been trying for two weeks now.
pls help.
If parts is 0 and labor is 0 then totalServicesResults is 0 and scTaxPercentsResults is infinite.