How to determine a string is English or Persian?

Question

I have edittext in a form, I want that when the user inputs text into the edittext for my program to detect which language was inserted into the edittext.

Is there a way to determine a string is English or Persian?

I found this code for Arabic

public static boolean isProbablyArabic(String s) {
for (int i = 0; i < Character.codePointCount(s, 0, s.length()); i++) {
    int c = s.codePointAt(i);
    if (c >= 0x0600 && c <=0x06E0)
        return true;
}
return false;
}

but how can I change this code for Persian?

Answer 1

All possible Unicode ranges for Persian (also for Urdu) alphabet:

• 0x0600 to 0x06FF

• 0xFB50 to 0xFDFF

• 0xFE70 to 0xFEFF

  So if you want don't miss any char check all ranges. Hope helps you.

Answer 2

You can know a string is english or persian by using Regex.

public static final Pattern VALID_NAME_PATTERN_REGEX = Pattern.compile("[a-zA-Z_0-9]+$");

public static boolean isEnglishWord(String string) {
    return VALID_NAME_PATTERN_REGEX.matcher(string).find();
}

this only works with words and numbers. if there is a character like '=' or '+' , the function would return false . you can fix that by editing the regex to match what you need .