What do ios apps do when they boot?

Question

Most of the applications that I see have loading screens, presumably to prevent hiccups in the game and preload all the data needed later in the game. I am currently working on a game that skips all several frames, apparently because the image data for the objects displayed on the screen are not stored in memory. What do programmers really do to store this data in memory for the duration of the application? I can think of using arrays, such as NSArrayor NSMutableArrayfor storing images, but I'm still trying to figure out how this will improve application performance. Perhaps I am completely leaving the tangent here. It would be helpful to get the word from someone with experience in the field.

EDIT:

For the person who voted to close the question, my question, in particular, is: what is a typical method in which the ios game loads its data into active memory to provide easy and low access to service information at runtime?

Answer 1

I saw several applications that load configuration and metadata when loading the application, some also download images and audio files. Usually they store data in a folder with documents or a cache, so they don’t have to wait for the download during the game.

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