iOS: Hide/Show the Status bar in an iPhone/iPad application
Lets see how to change the visibility of the status bar in an iphone/ipad application. The UIApplication class provides a centralized point of control and coordination for applications running on iOS. Every application must have exactly one instance of UIApplication (or a subclass of UIApplication). When an application is launched, the UIApplicationMain function is called;
iOS LOGIN Screen Tutorial with Server Authentication – JSON – PHP
This tutorial will guide you to create a simple app with a Login screen which takes username and password from the user and then posts it to a url and parses the JSON response form the server.