无法添加自定义声音以通知离子

Question

我将Ionic 3与最新版本的onesignal一起使用。我的后端向我的应用发送通知。我尝试过没有成功的自定义声音通知。

首先，我创建声音并将其放入C：\ Users \ tkossoko \ Documents \ rdv-pref-app \ app \ V1 \ rdv-pref-app \ platforms \ android \ res \ raw \ onesignalsound.mp3 < / p>

在后端，我像这样发送通知

`String jsonResponse;             字符串声音=“ onesignalsound”；             字符串small_icon =“ ic_stat_onesignal_default”;

        URL url = new URL("https://onesignal.com/api/v1/notifications");
        HttpURLConnection con = (HttpURLConnection)url.openConnection();
        con.setUseCaches(false);
        con.setDoOutput(true);
        con.setDoInput(true);

        con.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
        con.setRequestMethod("POST");

        String strJsonBody = "{"
                +   "\"app_id\": \""+appId+"\","
                +   "\"include_player_ids\": ["+idsToSend+"],"
                +   "\"data\": {\"foo\": \"bar\"},"
                +   "\"android_sound\": \""+sound+"\","
                +   "\"small_icon\": \""+small_icon+"\","
                +   "\"contents\": {\"fr\": \""+message+"\",\"en\": \""+message+"\"}"
                + "}";

` 但是我仍然具有默认的通知声音。我该怎么办？ 预先感谢。