Neuen Kalender mit Google API eintragen

AccountManager accountmanager = AccountManager.get(Events.this.c);
                String SCOPE = "https://www.googleapis.com/auth/calendar";


                AccountManagerFuture<Bundle> authToken = accountmanager.getAuthToken(Events.this.account, "oauth2:" + SCOPE, null, Events.this.a,
                        null, null);
                String accessToken = authToken.getResult().getString(AccountManager.KEY_AUTHTOKEN);


                System.out.println("MYACCESSTOKEN: " + accessToken);


                url = new URL("https://www.googleapis.com/calendar/v3/calendars?key=...");


                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                conn.setReadTimeout(15000);
                conn.setConnectTimeout(15000);
                conn.setRequestMethod("POST");
                conn.setDoInput(true);
                conn.setDoOutput(true);
                conn.addRequestProperty("client_id", "..." );
                conn.addRequestProperty("Authorization", "OAuth " + accessToken);


                OutputStream os = conn.getOutputStream();
                BufferedWriter writer = new BufferedWriter(
                        new OutputStreamWriter(os, "UTF-8"));


                writer.write("{\n" +
                        "   resource\n" +
                        "       {\n" +


                        "       \"summary\": \"Test\"\n" +
                        "       }\n" +
                        "}");


                writer.flush();
                writer.close();
                os.close();
                int responseCode=conn.getResponseCode();


                if (responseCode == HttpsURLConnection.HTTP_OK) {
                    String line;
                    BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
                    while ((line=br.readLine()) != null) {
                        response+=line;
                    }
                }
                else {
                    response="";


                }