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POObjective C Singleton Class
 

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    <p>I have created a singleton class in Objective C. Like the one below:</p> <pre><code>@interface SingletonClass : NSObject{ NSMutableArray *instanceArray; } @property(nonatomic,retain)NSMutableArray *instanceArray; +(SingletonClass*)sharedInstance; @end @implementation SingletonClass @synthesize instanceArray; static SingletonClass *sharedInstance =nil; +(SingletonClass*)sharedInstance { if(sharedInstance==nil){ sharedInstance=[[super allocWithZone:NULL]init]; } return sharedInstance; } -(id)init{ self=[super init]; if(self){ instanceArray=[[NSMutableArray alloc]init]; [instanceArray addObject:@"One"]; [instanceArray addObject:@"Two"]; } return self; } +(id)allocWithZone:(NSZone *)zone{ return [self sharedInstance]; } @end </code></pre> <p>I know it can be accessed from anywhere with the following piece of code:</p> <pre><code> SingletonClass *singletonObject=[SingletonClass sharedInstance]; </code></pre> <p>And the instanceArray can be accessed anywhere by singletonObject.instanceArray.</p> <p>Now my question is, is is possible to modify the array by adding new objects to it ? Will that be persisted ? Because i tried to add an object from one class</p> <pre><code> [singletonObject.instanceArray addObject:@"Three"]; </code></pre> <p>When i checked the array contents from another class, the array consisted of only two values which are initialized by default. The value which i added from another class didnt show up. What could be the problem ? Am I missing something here ? Please help.</p>
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    1. COhttp://stackoverflow.com/questions/6324732/using-a-singleton-to-create-an-array-accessible-by-multiple-views
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    2. COIf possible, format your code. It's difficult to read. Thanks.
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