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Window Hierarchy

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According to the iOS human interface guidelines, an app only has one window and then different views that change within that window. In the tutorials I have done for titanium it always mentioned to create a different window and then add other views to that new window when moving between screens, closing old windows as necessary to reduce memory consumption. Is this just a naming difference where a window in Titanium is similar to a view in iOS and the app itself is that iOS main window? Basically, will this be a problem once I try to publish an app having multiple windows?

Taken from iOS Human Interface Guidelines:

"An iOS app includes a window. But—unlike a window in a computer app—an iOS window has no visible parts and it can’t be moved to another location on the display. Most iOS apps contain only one window; apps that support an external display can have more than one."

![iOS window hierarchy](https://developer.apple.com/library/ios/documentation/userexperience/conceptual/mobilehig/Art/windowlayers_world_clock_2x.png "view hierarchy")


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