Here SERVER_URL
is SharedPreferences
instance from that we need to get specified value by using getString()
method, try this,
static void register(final Context context, final String regId, final String appName) {
Log.i(TAG, "registering device (regId = " + regId + ")");
SharedPreferences SERVER_URL = context.getSharedPreferences("URL" , Context.MODE_PRIVATE);
String serverUrl = SERVER_URL.getString("replace_your_key_value",null) + "/register.php";
Map<String, String> params = new HashMap<String, String>();
params.put("regId", regId);
params.put("appName", appName); ...