Append "@gmail.com" in EditText after pressing any key from user in android -


i thinking logic given below

edittextusername.addtextchangedlistener(new textwatcher() {    @override    public void beforetextchanged(charsequence s, int start, int count, int after) {         }        @override    public void ontextchanged(charsequence s, int start, int before, int count) {     }        @override    public void aftertextchanged(editable s) {                 appendemail(edittextusername.gettext().tostring());             }         });      void appendemail(string email){         if( email.length()>=1){              edittextusername.settext("@gmail.com");     } }

this example code not actual code. throwing stackoverflow exception.

can resolve isssue

you need check if substring "@gmail.com" exists there no need settext again. because when set text edittext calls aftertextchange again, , call appendemail , sets text again etc. 

void appendemail(string email){       if(!textutils.isempty(email) && email.contains("@gmail.com")){              edittextusername.settext(email + "@gmail.com");       }

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