Objective C - prevent feel of unresponsiveness when clicking a button [closed] - objective-c

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What tricks can I do to make my app feel "snappier"?
For example, when I click on a menu button, which loads a different nib file, there is this 1 second delay before the new view shows up, making it feel like the app isn't responsive.
Thank you,
Tee

You could reduce the nib load time by simplifying the content or making some of it load after the view controller appears on-screen.
You can run Instruments on it to try and get an idea of where the choke point is. If it feels unresponsive, compared to other apps, then maybe you're doing something wrong or computationally expensive.
Check that your images are sized correctly. If they're too big that'll up the load time + memory usage.

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For the last couple of weeks i'v been trying to replicate the method in which Id Technologies used to hide hidden messages inside their own songs. For reference: https://youtu.be/yzFit0nldf4 .
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What I'm trying to figure out is how to automatically save and load data using NSUserDefaults. I know how to do save and load data if I have save and load button, using NSUserDefault. I'm not sure which of the methods I should be using in the AppDelegate, if that is right?
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I was looking at the Soundlcoud Widget docs
http://developers.soundcloud.com/docs/widget#
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iPad app weird crash [closed]

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Maybe the question is too general. Though, I dare asking it. Here's the situation: I have tested my app on my iPad and it worked great. It was submitted to Apple and approved. After I download it, it crashes when I do certain actions: example - presenting a modal view controller which contains a photo gallery. I tested it again and it worked. Soon after redownload it had the same strange behavior. How to debug such a situation? Thanks.
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I'd like to try and create a program playing a game. I.e. "a bot".
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