How to load and cache resources files mentioned in xml / plist when app start?

Discussion in 'iOS Programming' started by webphone, Nov 10, 2010.

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  1. webphone, Nov 10, 2010

    webphone macrumors newbie

    Joined:
    Jan 18, 2010
    #1
    There is a Resources folder which I store png images and sound files

    e.g.
    Resources/images/splash.png
    Resources/sound/intro.caf

    I want to store the path and file names in a xml or plist file.

    So that it can be configured easily when development.

    The XML schema:
    <resources>
    <images>
    <file name="splash.png" />
    </images>
    <sound>
    <file name="intro.caf" />
    </sound>
    </resources>

    I am not sure how to create the plist to store those values.

    I saw a code in a project but it seems to load the plist file:

    [[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:mad:"Splash.plist"];

    My question is how is the objective-c code to load and cache resources files mentioned in xml / plist when app start?
     
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  2. cnstoll, Nov 10, 2010

    cnstoll macrumors 6502

    Joined:
    Aug 29, 2010
    #2
    You want two things:

    1) When your app loads you want to read the plist file into an NSData object,

    2) and then convert that into a NSDictionary to read your data from.

    Look at the NSData, NSFileManager, and NSDictionary documentation, it should have what you need. Specifically look at the NSFileManager "contentsAtPath:UIPath" method which returns an NSData object, and the NSData method "propertyListFromData:NSData" method which returns a dictionary.

    You can call that initialization stuff from basically anywhere you want, and just initialize your variables from the data in the dictionary.

    Hope that helps.
     
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  3. dejo, Nov 10, 2010

    dejo Moderator

    dejo

    Staff Member

    Joined:
    Sep 2, 2004
    Location:
    The Centennial State
    #3
    You could also consider just using NSData's dataWithContentsOfFile: class method.
     
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