DevMemo

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC, dispatch_get_main_queue(), ^{ });

*** implementation new Thread(new Runnable() { public void run() {     HashMap params = new HashMap();           params.put("param1", "1");     HttpURLConnection connection = null;           try {         URL url = new URL("http://xxxxx.com/api/xxxx");                    connection = (HttpURLConnection)url.openConnection();         connection.setRequestMethod("POST");         connection.setRequestProperty("Accept", "application/json");         connection = ConnectionManager.setParams(connection, params);             connection.connect();             Integer responseCode  = connection.getResponseCode();             if (responseCode == HttpURLConnection.HTTP_OK) {             activity.runOnUiThread(new Runnable(){                 @Override                 public void run() {                     //refresh GUI                 }                     });             }         }catch(Exception e){         e.printStackTrace();       }f

public static JSONObject getInputStreamToJSON (InputStream inputStream) throws Exception { BufferedReader streamReader = new BufferedReader( new InputStreamReader(inputStream , "UTF-8" )) ; StringBuilder responseStrBuilder = new StringBuilder() ; String inputStr ; while ((inputStr = streamReader.readLine()) != null ) responseStrBuilder.append(inputStr) ; JSONObject jsonObject = new JSONObject(responseStrBuilder.toString()) ; //returns the json object return jsonObject ; }

*** add attributes attrbutedString;   // NSAttributedString NSMutableAttributedString *attrStr = attrbutedString; [attrStr addAttribute:NSKernAttributeName value:[NSNumber numberWithFloat:-1] range:NSMakeRange(0, attrStr.length)];

***** XCode 10.1 ipa signing issue https://stackoverflow.com/questions/53112173/exporting-in-house-ios-app-says-certificate-unknown-profile-none

en http://www.technetexperts.com/mobile/how-to-pause-or-wait-execution-until-block-executes-with-semaphore-in-ios/ jp http://blog.katty.in/2365   kr http://dolfalf.tistory.com/145