Originally published at: http://www.sitepoint.com/creating-custom-ui-components-live-rendering-xcode/
iOS allows you to create custom controls that can be used in your apps alongside the Apple provided ones. Prior to Xcode 6, you couldn’t preview custom controls in Interface Builder, you had to run the app to see what you had built. This could get frustrating when you had to continually run the application to check the results of changes you’d made, as running an app on the simulator or device can take some time.
Xcode 6 improves on this process, so you can now preview your custom controls in Interface Builder and see your changes in real time as you make them. This makes development faster as you can quickly see the results of what you are coding. Xcode 6 goes further in enabling you to debug the controls without running the app first.
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