Xamarin android format string onkey pressed -


i have edittext in want user type credit card number, want format string while user typing it, want string have space every 4 numbers, this:

xxxx xxxx xxxx xxxx

i found use textwatcher , onkeyup couldn't understand how use in edittext, if 1 explain me appreciate it, thanks.

create class implements itextwatcher interface. add instance of class text changed listener...

public class creditcardformatter : java.lang.object, itextwatcher {     private edittext _edittext;     public creditcardformatter(edittext edittext)     {      _edittext = edittext;     }      public void aftertextchanged(ieditable s)     {     }      public void beforetextchanged(icharsequence s, int start, int count, int after)     {     }      public void ontextchanged(icharsequence s, int start, int before, int count)     {     } }

in activity.. (or oncreateview in fragment)

public override void oncreate() {     // other code..     myedittext.addtextchangedlistener(new creditcardformatter(myedittext)); }

then use override methods reformat text show need.


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