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Editorial Team
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Asked: 2026-05-16T01:31:02+00:00

RootViewController *rvController = [[RootViewController alloc] initWithNibName:@RootViewController bundle:[NSBundle mainBundle]]; sometimes i see it use nil

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RootViewController *rvController = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:[NSBundle mainBundle]];

sometimes i see it use nil ,i dont know what exactly it use for?

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1 Answer

  1. Editorial Team

    Here is the exact explanation for that:

    The bundle in which to search for the
    nib file. This method looks for the
    nib file in the bundle’s
    language-specific project directories
    first, followed by the Resources
    directory. If nil, this method looks
    for the nib file in the main bundle.

    I think [NSBundle mainBundle] doesn’t do anything different than you put nil. However, if you want to do internationalization and localization, you can use them

    More details here

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