3.2.2 Register.Java

This class is used for registering user. Registration is very simple, it has only login, password and for checking re-password. It has 3 textbox and 1 button for submission.

Description of the functions and variables of the class Register.java

protected void onCreate (Bundle savedInstanceState) - it is a function of the main interface for querying

public void onClick (View v) - this function starts when you press the button, and if the entered information is correct, sends the information to the database and logs the user

public void onPreExecute () - this function creates a PDialog and shows until the program receives data from the Base

protected String doInBackground (String. .. args) - main function is to register

protected void onPostExecute (String file_url) - sends data to the interface

Table 3 – variables of class Register.java

Name	Type	Description
jsonParser	JSONParser	To send information to the base
Submit	Button	If the information entered is correct, sends the information to the database and logs the user
ePass	String	Variable for storing passwords
rePass	String	Variable for storing the password again
eError	String	Display errors on this variable if you want to
Ok	Boolean	To verify the correct password
Ko	Boolean	To check the stored contacts
Yo	TextView	Text if you have successfully logged
url	String	URL php script
Success	Int	For validation
PDialog	ProgressDialog	Animation boot
Login	String	user

3.2.3 Login.Java

This class is used for login the user. For login user must write only to parameters: login and password. If this parameters are true, user enters to the main page.

3.2.2.1 Description of the functions and variables of the class Register.Java

protected void onCreate (Bundle savedInstanceState) - it is a function of the main interface for querying

public void onClick (View v) - this function starts when you press the button, and if the entered information is correct, sends the information to the database and logs the user

public void onPreExecute () - this function creates a PDialog and shows until the program receives data from the Base

protected String doInBackground (String. .. args) - main function is to register

protected void onPostExecute (String file_url) - sends data to the interface

Table 4 – variables of class Login.java

Name	Type	Description
jsonParser	JSONParser	To send information to the base
Submit	Button	If the information entered is correct, sends the information to the database and logs the user
ePass	String	Variable for storing passwords
rePass	String	Variable for storing the password again
eError	String	Display errors on this variable if you want to
Ok	Boolean	To verify the correct password
Ko	Boolean	To check the stored contacts
Yo	TextView	Text if you have successfully logged
url	String	URL php script
Success	Int	For validation
PDialog	ProgressDialog	Animation boot
Login	String	user
login	String	for login
password	String	For password

3.2.4 Succes.java

This class is uses when user logged in. User can call without backup, or save all contacts to server, and backup saved contacts to his mobile phone. This class is the main class in case of functionality. And also in this page has a log out button to exit from authorized page.

Description of the functions and variables of the class Success.java

protected void onCreate (Bundle savedInstanceState) - it is a function of the main interface for querying

public void onClick (View v) - this function starts when you press the button Button, and if the entered information is correct, sends the information to the database and logs the user

public void onPreExecute () - this function creates a PDialog and shows until the program receives data from the Base

protected String doInBackground (String. .. args) - main function is to register

protected void onPostExecute (String file_url) - sends data to the interface

Table 5 – variables of class Success.java

Name	Type	description
jsonParser	JSONParser	To send information to the base
Submit	Button	If the information entered is correct, sends the information to the database and logs the user
Phone	String	phone number contact
name	String	phone name of contact
Save	Button	Button for saving
Backup	Button	Button to download the data
Logout	Button	Button to exit
Yo	TextView	Text if you have successfully logged
url	String	URL php script
Success	Int	For validation
PDialog	ProgressDialog	Animation boot
Login	String	User login
Ok	Boolean	To verify the correct password
Ko	Boolean	To check the stored contacts