Develop Reference

Android - Decimal Formatter

I've try this in my device and work fine. But, in some Android device, the symbol is in wrong place. This is my code :
public static String convertToRupiah(String priceBeforeConverted){
//manual setting separator, because currently RUPIAH is NOT supported
DecimalFormat formatter = (DecimalFormat) DecimalFormat.getCurrencyInstance();
DecimalFormatSymbols formatRupiah = new DecimalFormatSymbols();
formatRupiah.setCurrencySymbol("Rp ");
formatRupiah.setMonetaryDecimalSeparator(',');
formatRupiah.setGroupingSeparator('.');
formatter.setDecimalFormatSymbols(formatRupiah);
Double price = StringFormatter.isNullOrEmpty(priceBeforeConverted) ? 0.00 : Double.valueOf(priceBeforeConverted) ;
String conversionResult = formatter.format(price);
if(conversionResult.endsWith(",00"))
conversionResult = conversionResult.substring(0, conversionResult.length()-3);
return conversionResult;
}
expected result is : Rp 25.000,00

String pattern = "Rp ###,###.000 ";
DecimalFormat decimalFormat = new DecimalFormat(pattern);
String format = decimalFormat.format(25.000);
System.out.println(format);
--Try this, your zeros after decimal place will not miss. Output of this code is.
Rp 25.000
Let me know if anything is not clear.

How to get split string with special characters in android?

I have a string named namely "-10.00","-100.00","-1000.00". I want to get value like "10","100","1000" from that string. I have tried to get substring but did not able to get.
code i have tried
String amount = "-10.00";
String trimwalletBalance = amount.substring(0, amount.indexOf('.'));
From above i only get "-10".

String trimwalletBalance = amount.substring(1, amoun.indexOf("."));

Its very simple.
Do it like String trimwalletBalance = amount.substring(1, amount.indexOf('.'));
Instead of position 0, You should get substring from position 1

Convert it into integer and then name it positive:
String amount = "-10.00";
int amountInt = (int) Double.parseDouble(amount);
if(amountInt<0)amountInt*=-1;

Try
String amount = "-10.00";
int value = (int) Double.parseDouble(amount);
if(value < 0) value *= -1;
//value will be 10
OR
String text = amount.substring(1, amount.indexOf('.'));

RubyMotion: how to display unicode character in Android?

How to display unicode character in TextView in Android using RubyMotion?
I tried
MainModule.get.setText('\u00d7')
MainModule.get.setText('0x00d7')
Where get is to get the TextView object.
But neither works, it still displays the original string(\u00d7 or 0x00d7).
Edit
I am using Ruby to write Android, not Java.

I get you a method that unicode to string, I hole that would be useful for you.
mTextView.setText(unicode2String("\\u00d7"));
...
public String unicode2String(String unicode) {
StringBuffer string = new StringBuffer();
String[] hex = unicode.split("\\\\u");
for (int i = 1; i < hex.length; i++) {
int data = Integer.parseInt(hex[i], 16);
string.append((char) data);
}
return string.toString();
}

ReplaceAll not working

I'm using google volley to retrieve source code from website. Some looping was done to capture the value in the code. I've successfully captured the data I wanted, but error was shown: NumberFormatException: Invalid float: "2,459.00"
My intention was to store the value after the class=ListPrice>
Sample:
RM 2,899.00
The example value of the source code I wanted to save is "RM2,459.00 "
Below is the code I've written:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_lazada_result);
lelongResult = (TextView) findViewById(R.id.lelong_result);
RequestQueue lelong = MyVolley.getRequestQueue(this);
StringRequest myLel = new StringRequest(
Method.GET,
"http://list.lelong.com.my/Auc/List/List.asp?DA=A&TheKeyword=iphone&x=0&y=0&CategoryID=&PriceLBound=&PriceUBound=",
RetrieveLelong(), createMyReqErrorListener());
lelong.add(myLel);
}
private Response.Listener<String> RetrieveLelong() {
return new Response.Listener<String>() {
#Override
public void onResponse(String response) {
ArrayList<Float> integers = new ArrayList<>();
String to = "class=ListPrice>";
String remainingText = response;
String showP = "";
while (remainingText.indexOf(to) >= 0) {
String tokenString = remainingText.substring(remainingText
.indexOf(to) + to.length());
String priceString = tokenString.substring(0,
tokenString.indexOf("<"));
float price = Float.parseFloat(priceString.replaceAll("[^\\d,]+", "").trim());
integers.add((price / 100));
remainingText = tokenString;
}
for (int i = 0; i < integers.size(); i++) {
String test1 = Float.toString(integers.get(i));
showP += test1 + "\n";
}
lelongResult.setText(showP);
}
};
}
The problem was as below:
I've tried all sort of replaceAll(),
1)replaceAll("[^\d,]+","") result:2,89900
replace all character except digits and comma works.
2)replaceAll("[^\d]+","") result:Invalid int""
replace all character include comma and dot ,not working
3)replaceAll("[^\d.]+,"") result:Invalid int""
replace all character exclude digits and dot, not working
From the experiment 2&3 coding above,I've noticed that if the comma were removed,i cant parseFloat as the value received by it is: "".NumberFormatException:Invalid Float:"" shown.
From the experiment 1,NumberFormatException:Invalid Float "2,45900" is showned.
The problem was replacing comma ,the code will not work but with the presence of comma ,the value cannot be stored into string

try this:
float price = Float.parseFloat(priceString.replaceAll("RM", "").trim());

use `replaceAll(Pattern.quote(","), "");
EDIT
if you want only numbers then use this
String s1= s.replaceAll("\D+","");

Try to parse the number by specifying the Locale.
NumberFormat format = NumberFormat.getInstance(Locale.KOREAN);
Number number = format.parse(priceString.replaceAll("RM", ""));
double d = number.doubleValue();
I'm just guessing the locale, don't know what you should use, depends on country

You need to do it one by one
priceString=priceString.replaceAll("\\D", "");
priceString=priceString.replaceAll("\\s", "");
now
priceString=priceString.trim();
float price = Float.parseFloat(priceString);

the problem is that in your code:
priceString.replaceAll(Pattern.quote(","), "");
float price = Float.parseFloat(priceString.replaceAll("\\D+\\s+", "").trim());
You are replacing coma but not storing the value!
you have to do:
priceString = priceString.replaceAll(",", "");
float price = Float.parseFloat(priceString.replaceAll("\\D+\\s+", "").trim());
I'm not sure of the pattern "\D+\s" because if you remove the coma you don't need to replace anything else (except "RM" that i assume you already removed)
Update: set locale and parse a number:
NumberFormat format = NumberFormat.getInstance(Locale.KOREAN);
Number number = format.parse(priceString.replaceAll("RM", ""));
double d = number.doubleValue();

How to convert a string to character by character in Android?

I have Edittext field that the user can enter their name. I want to check it with alphabets for how many times a letter comes.
Which is the best way to do this?
I tried the below code for getting each character from the string but error occurring? I appreciate it if any one can help.
name=(EditText)findViewById(gami.Numerology.R.id.inputUI);
String a=name.getText().toString();
for ( int i = 0; i < a.length(); i++ )
{
c = a.charAt(i);
if (c=='s')
{
s=1; //like this for all characters
}
}
I just put this in a click event of button.

//declare the original String object
String strOrig = "Hello World";
//declare the char array
char[] stringArray;
//convert string into array using toCharArray() method of string class
stringArray = strOrig.toCharArray();
//display the array
for(int index=0; index < stringArray.length; index++)
//check of character appearance

You can use a hashmap or some sort of dictionary in Java.
Rough example since I don't know how to use Hashmap in Java:
HashMap<Character, Integer> counter = new HashMap<Character, Integer>();
for (Character c: name)
{
counter.put(c, counter.get(c) == null ? 1 : counter.get(c)++);
}