BlackBerry 5,6,7 Chat sample: Create session, User Sign Up, User Sign In

gistfile1.java

// Make request
public void doRequest(int type)
    {
        switch(type)
        {
            // Create session request
            case REQUEST_SESSION:
            {
                String time = new Long(new Date().getTime()).toString();
                String timestamp = time.substring(0, time.length()-3);
                String postParam = "application_id=" + APP_ID + "&auth_key=" + AUTH_KEY + "&nonce=" + nonce  + "&timestamp=" + timestamp;
                String signature = "";
                try
                {
                    signature = hmacsha1(AUTH_SECRET, postParam);
                }
                catch(Exception ex)
                {
                    System.out.println("---------> SIGNATURE ERROR");
                    break;
                }
                
                JSONObject postObject = new JSONObject();
                try
                {
                    postObject.put("application_id", APP_ID);
                    postObject.put("auth_key", AUTH_KEY);
                    postObject.put("nonce", nonce);
                    postObject.put("timestamp", timestamp);
                    postObject.put("signature", signature);
                }
                catch(Exception ex)
                {
                }
                BigVector postData = new BigVector();
                postData.addElement(postObject.toString());
                
                DebugStorage.getInstance().Log(0, "Post params: " + postParam);
                DebugStorage.getInstance().Log(0, "Post data: " + postObject.toString());
                
                HTTPConnManager man = new HTTPConnManager(POST, "http://api.quickblox.com/session.json", postData, type, this);
                break;
            }

            // User Sign Up
            case REQUEST_USERS:
            {
                JSONObject credentialsObject = new JSONObject();
                JSONObject postObject = new JSONObject();
                try
                {
                    credentialsObject.put("login", usernameField.getText());
                    credentialsObject.put("password", passwordField.getText());
                    postObject.put("user", credentialsObject);
                }
                catch(Exception ex)
                {
                }
                BigVector postData = new BigVector();
                postData.addElement(TOKEN);
                postData.addElement(postObject.toString());
                
                DebugStorage.getInstance().Log(0, "Post data: " + postObject.toString());
                
                HTTPConnManager man = new HTTPConnManager(POST, "http://api.quickblox.com/users.json", postData , type, this);
                break;
            }

            // User Sign In
            case REQUEST_LOGIN:
            {
                String time = new Long(new Date().getTime()).toString();
                String timestamp = time.substring(0, time.length()-3);
                String postParam = "application_id=" + APP_ID + "&auth_key=" + AUTH_KEY + "&nonce=" + nonce  + "&timestamp=" + timestamp;
                String signature = "";
                try
                {
                    signature = hmacsha1(AUTH_SECRET, postParam);
                }
                catch(Exception ex)
                {
                    System.out.println("---------> SIGNATURE ERROR");
                    break;
                }
                
                JSONObject postObject = new JSONObject();
                try
                {
                    postObject.put("application_id", APP_ID);
                    postObject.put("auth_key", AUTH_KEY);
                    postObject.put("nonce", nonce);
                    postObject.put("timestamp", timestamp);
                    postObject.put("signature", signature);
                    postObject.put("login", usernameField.getText());
                    postObject.put("password", passwordField.getText());
                }
                catch(Exception ex)
                {
                }
                BigVector postData = new BigVector();
                postData.addElement(TOKEN);
                postData.addElement(postObject.toString());
                
                DebugStorage.getInstance().Log(0, "Post params: " + postParam);
                DebugStorage.getInstance().Log(0, "Post data: " + postObject.toString());
                
                HTTPConnManager man = new HTTPConnManager(POST, "http://api.quickblox.com/login.json", postData, type, this);
                break;
            }
            default: break;
        }
    }
    
    public void ProcessAnswer(int type, String result)
    {
        switch(type)
        {
            // Create Session answer OK 
            case REQUEST_SESSION:
            {
                // Do something
                break;
            }

            // User Sign Up answer OK 
            case REQUEST_USERS:
            {
                // Do something
                break;
            }

            // User Sign In answer OK
            case REQUEST_LOGIN:
            {
                // Do something
                break;
            }
            default: break;
        }
    }

    public void ProcessError(int type, final String message)
    {
       // Process errors
    }