Get Up and Running
Okay, so you’ve created the project, poked around Xcode, and set some preferences. So, now what? Well, the next thing you need to do is build your project. Building your project consists of compiling your source files, linking the output files to the included frameworks, then combining all the project resources with the output files into a single application bundle. For the Flashlight project, this is the Flashlight.app
file in the Products group.
The “Build Results” tab will list any warnings or errors generated when building your project.
Once you successfully build your project, you can finally run the app in the iPhone ...