android - Issue setting AlertDialog -


i trying display alertdialog, compile error of (ambiguous) on following line:

alertdialog.setbutton(dialoginterface.button_positive, "ok", null);

how should set button?

            alertdialog.builder dlgalert  = new alertdialog.builder(this);         dlgalert.setmessage(getresources().getstring(r.string.err_connection));         dlgalert.settitle(getresources().getstring(r.string.err_connection_header));         dlgalert.setpositivebutton(getresources().getstring(r.string.ok),             new dialoginterface.onclicklistener() {                 public void onclick(final dialoginterface dialog, final int which) {                     finish();                 }             });         dlgalert.setcancelable(true);         dlgalert.create().show();

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