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PO
 

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    <p>First off, unless you are doing something special with your instance variable (relImageUrl) get rid of it as it isn't needed. If you keep it, make sure you synthesize it properly -- and current convention is to prefix it with an underscore (as in _relImageUrl). But again, you probably don't need it at all.</p> <p>You haven't shown anything of the getter/setter for relImageUrl so assuming you aren't doing anything special there. </p> <p>You also show your private class interface as GDAPIhandler but you refer to it as dataClass.h -- this makes no sense. </p> <p>How do you set the item count for table view if you don't actually add any elements until you request it as above?</p> <p>Ideally, you'd have an NSArray property in your custom class and methods that operate on it by exposing:</p> <ol> <li>a method to get the count of items </li> <li>a method to pull out an item an a given index </li> <li>possibly methods to add/remove items</li> <li>methods to instantiate/populate the array -- but please don't do it as you request cells as you seem to be doing.....that approach will not end well</li> </ol> <p>All this assumes you are trying to use your custom class to 'hide' access to the underlying array. Suggest you refactor along some of these lines to make things easier for yourself going forward.</p> <p>UPDATE</p> <p>I just saw your screen shot for the last response. Not sure how you expect folks to help when you don't share all the relevant info.</p> <p>If you want to assign to relImageUrl inside a block, you need to prefix it with the __block storage modifier. Further, don't refer to self inside the block as it could lead to retain cycles.</p> <p>So, you could try something like (inside your function but before you enter any blocks).</p> <pre><code>__weak CustomClass* weakSelf = self; // don't capture self in block __block NSMutableArray* weakImageUrl = weakSelf.relImageUrl; </code></pre> <p>..try something along those lines. Two main points again:</p> <ol> <li>don't refer to self inside the block</li> <li>use __block storage modifier for any objects you need to mutate inside the block</li> </ol> <p>...good luck...</p>
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    1. POStore data in NSArray in custom class and use in other class/controller
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    1. COremoved ivar as yeah wasnt making any special use of it but added by reading some posts trying to make work what I needed, GDApiHandler and dataClass are same, GDApi one is real name, dataClass is a dummy name I used for example
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    2. COcan you tell me the example you gave referring to my own code as per my screen ? is weak prefix just for convinience or it plays any part like _ ? And can _relImageUrl be used without adding synthesize or should I add it ?
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    3. COYou can refer to _relImageUrl in your implementation without creating the backing variable. It will be created for you by virtue of the @property definition by default -- unless you override the setter/getter then you WILL need to explicitly synthesize it.
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