How to detect if edittext has English characters

Question

I want to detect if my edittext has English characters and notify user to change it because i want just Persian characters for name and family name. how can i filter edittext to accept just Persian characters or detect English characters and show an error?

Despite having different tags, this question is a possible duplicate of [Regex for check the input string is just in persian language](http://stackoverflow.com/questions/10561590/regex-for-check-the-input-string-is-just-in-persian-language) - since the only relevant part is the regular expression involved. — Geeky Guy, May 13 '16 at 11:23
check in edit text have string A-z and a-z with help of Regx strings on textchangelistner — Nitesh Pareek, May 13 '16 at 11:24
Also, don't check for the existence of English characters - check for the existence of any non-Persian character. 'ñ' is neither English nor Persian, for example. — Geeky Guy, May 13 '16 at 11:26

score 12 · Accepted Answer · answered May 13 '16 at 11:29

I think its not easy to detect and inform user to instruct. Simply u can do something like this. In XML file:

<EditText
    android:id="@+id/LanguageText"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:inputType="text"
    android:digits="@string/app_lan" />

In Strings.xml :

<string name="app_lan">YOUR LANGUAGE</string>

Example If English :

<string name="app_lan">abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ</string>

For ur language same like this.

score 4 · Answer 2 · answered May 13 '16 at 11:26

4

Persian characters are within the range: [\u0600-\u06FF]. Validate your string with regex.

answered May 13 '16 at 11:26

Sergei Podlipaev

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score 4 · Answer 3 · answered May 13 '16 at 11:37

Try the following regular expression Persian characters range.

public static final Pattern RTL_CHARACTERS = 
    Pattern.compile("[\u0600-\u06FF\u0750-\u077F\u0590-\u05FF\uFE70-\uFEFF]");
Matcher matcher = RTL_CHARACTERS.matcher("Texts");
if(matcher.find()){
   return true;  // it's RTL
}

Or Use this method.

public static boolean textPersian(String s) {
for (int i = 0; i < Character.codePointCount(s, 0, s.length()); i++) {
    int c = s.codePointAt(i);
    if (c >= 0x0600 && c <=0x06FF || c== 0xFB8A || c==0x067E || c==0x0686 || c==0x06AF)
        return true;
}
return false;

Ahmad Aghazadeh · Answer 4 · 2016-05-13T18:27:11.427

2

public final static String PERSIAN_STRING = "ا آ ب پ ت ث ج چ ح خ د ذ ر ز ژ س ش ص ض ط ظ ع غ ف ق ک گ ل م ن و ه ی";
public final static String LATIN_STRING = "a b c d e f g h i j k l m n o p q r s t u v w x y z";

 if (PERSIAN_STRING.contains(str.toLowerCase()))
     lang = "PERSIAN";

  if (LATIN_STRING.contains(str.toLowerCase()))
      lang = "LATIN";

edited May 13 '16 at 18:27

answered May 13 '16 at 11:29

Ahmad Aghazadeh

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What if the text contains these: áéíóúçñ¢£ – Geeky Guy May 13 '16 at 11:30
1

@Renan and are they valid English characters? – user902383 May 13 '16 at 11:43
1

They are. English has words like "resumé", "fiancé" etc. – Geeky Guy May 13 '16 at 12:15

score 1 · Answer 5 · edited May 23 '17 at 12:00

1

Summarizing a couple things here. Since, @Sergei Podlipaev has noted that Persian characters are in the range \u0600 to \u06FF, you can use regex. I am not sure if I am specifying the bounds correctly, but this will give you an idea.

To see if english character set is used - ^[a-zA-Z0-9]*$
To see if Persian character set is used - ^[\u0600-\u06FF]+$

edited May 23 '17 at 12:00

Community

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answered May 13 '16 at 11:33

Debosmit Ray

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How to detect if edittext has English characters

5 Answers5