Free Push Notification using onesignal - Android Part 2

Create notification

The Create Notification method is used when you want your server to programmatically send notifications to a segment or individual users. You may target users in one of three ways using this method: by Segment, by Filter, or by Device. At least one targeting parameter must be specified.

You may only use one method of targeting users

If a targeting parameter of one type is used, then targeting parameters from other types may not be used. For instance, you cannot use the included_segments parameter (from segments) with the filters.

Send to Segments

Segments are the most common way developers send notifications via OneSignal. Sending to segments is easy: you simply specify which segments you want to send to, and, optionally, which ones you don't.

Send to a specific segment - Create notification

class PhotoTask extends AsyncTask<String,String,String> {
    @Override    protected String doInBackground(String... strings) {



        try {
            String jsonResponse;

            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.setRequestProperty("Authorization", "Basic NGEwMGZmMjItY2NkNy0xMWUzLTk5ZDUtMDAwYzI5NDBlNjJj");
            con.setRequestMethod("POST");

            String strJsonBody = "{"                    +   "\"app_id\": \"13b67e0f-9968-4b95-87e9-5340c7c7693e\","

                    +   "\"big_picture\": \""+img_url+"\","

                    +   "\"large_icon\": \""+user_photo+"\","

                    +   "\"include_player_ids\": [\""+Onesignal_id+"\"],"

                    +   "\"data\": {\"id\": \""+user_id+","+user_name+","+user_photo+"\"},"

                    +   "\"contents\": {\"en\": \""+user_name+": "+Txt_msg+"\"}"                    + "}";


            System.out.println("strJsonBody:\n" + strJsonBody);

            Log.d("strJsonBody",strJsonBody);

            byte[] sendBytes = strJsonBody.getBytes("UTF-8");
            con.setFixedLengthStreamingMode(sendBytes.length);

            OutputStream outputStream = con.getOutputStream();
            outputStream.write(sendBytes);

            int httpResponse = con.getResponseCode();
            System.out.println("httpResponse: " + httpResponse);

            if (  httpResponse >= HttpURLConnection.HTTP_OK                    && httpResponse < HttpURLConnection.HTTP_BAD_REQUEST) {
                Scanner scanner = new Scanner(con.getInputStream(), "UTF-8");
                jsonResponse = scanner.useDelimiter("\\A").hasNext() ? scanner.next() : "";
                scanner.close();
            }
            else {
                Scanner scanner = new Scanner(con.getErrorStream(), "UTF-8");
                jsonResponse = scanner.useDelimiter("\\A").hasNext() ? scanner.next() : "";
                scanner.close();
            }
            System.out.println("jsonResponse:\n" + jsonResponse);

        } catch(Throwable t) {
            t.printStackTrace();
        }
        return null;
    }
}

Note:The one signal id, i stored and retrieve from firebase database.

Results - Create notification:



If your notification successfully created means you get the following response







{
  "id": "458dcec4-cf53-11e3-add2-000c2940e62c",
  "recipients": 3
}