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    <p>Never pass ownership around. I.e., in your call to initWithId: you create a string. Make sure it's released in the exact same place. Do not hand the ownership over, burdening another function with the task of releasing what you created (or retained, ...).</p> <p>If you're not calling initWithId: an unusually high number of times per second, do an autorelease. Even better, use a convenience function. Do not let people talk you into "avoiding the autorelease pool". Because a) it's not so easy to avoid and b) you have more important things to worry about.</p> <p>In code:</p> <pre><code>NSString* graphID = [NSString stringWithFormat: @"%s", current_ID]; GraphViewController* graph = [[[GraphViewController alloc] initWithId: graphID] autorelease]; </code></pre> <p>In the constructor, you will simply retain the ID and in the dealloc you will release it again. And please... use (private) @property declarations for this. You can then completely remove the ivar "graphID" from your public interface (if it's private, of course).</p> <pre><code>@interface GraphViewController () @property (copy, nonatomic) NSString* graphID; // copy instead of retain for potentially mutable objects @end </code></pre> <p>Then, in initializer and dealloc, boilerplate stuff like:</p> <pre><code>@synthesize graphID; - (id)initWithId:(NSString*) ID; { self = [super init]; self.graphID = ID; return self; } - (void) dealloc { self.graphID = nil; // controversial, Apple policy is [graphID release]; graphID = nil; [super dealloc]; } </code></pre> <p>Using this style will make you sleep better at night. Delighted users will raise statues in your name.</p>
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    1. USSteven Kramer
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    1. COThank you Steven:)
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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