Adding Dollar Sign ($) Automatically In Edit Text for Android Studio -

i have edit text automatically input dollar sign before number. android studio

example $500

edit:

the addition of $ should take place when edit text used (when tapped). currency in cad. dollar sign act reminder field is

just add onchange listener , insert $ after user done input.

private edittext youredittext;  @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      setcontentview(r.layout.main);     youredittext = (edittext) findviewbyid(r.id.youredittextid);      youredittext.addtextchangedlistener(new textwatcher() {       @override       public void aftertextchanged(editable s) {         youredittext.settext("$" + youredittext.gettext().tostring());       }       @override       public void beforetextchanged(charsequence s, int start, int count, int after) {}       @override       public void ontextchanged(charsequence s, int start, int before, int count) {}    }); }