Anyone with programming experience can learn how to write an iPhone application. But if you want to build great applications, there are a lot more than simple coding: You also need to know how to design and market your creations. Discover the tools to develop applications that great iPhone application design before you start coding Building a complex application with Xcode and Interface Builder app Determine how brand-then beta-test the brand in the real world in a spoon Learn about how to get your application into the App Store Promote your products, track sales, and build strong customer following your App Updates to Multitasking with IOS 4 By Craig Hockenberry In multitasking phones like the iPhone and iPhone 3G 4, you can make it so your application doesn? T stops when the user presses the Home button. You can give your application multitasking power without writing a single line of code! First, download and install the SDK 4 free from Apple's IOS? S iPhone Dev Center. You need to either Xcode 3.2.3 and iPhone SDK 4 to make an application to IOS 4. They mean the same thing.) Now you go back just a few steps from the application multitasking?: 1. Open the iPhone app in the new version of Xcode project, then select Project> Edit Project Settings to update the settings for your project. which means that Xcode will build your application with the SDK 4.0 IOS. In the Deployment section, you will see the iPhone OS Deployment Target.?? This setting defines the oldest version of the iPhone OS where you want your application to be run. If the application you used to run on version 3.0, you can change these settings to the iPhone OS 3.0?.? Now you can build your application in the normal way and test it on iPhone. You may want to make a further improvement, because the iPhone can end the multitasking application when the OS or other applications that require more memory. Fortunately, the application notifies you when placing an application to the background: that's your chance to clean up the temporary memory of this?. For more information about multitasking in IOS 4, check out? Supporting Multitasking in Your Application?