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POObjective C using class-methods
 

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    <p>I've recently started developing for iPhone and therefore Objective C, coming from Java. So I want to apologize in advance for this probably is a noob question:)</p> <p>I´m having problem getting my application approved on App Store. My application works fine when using the simulator or my iPhone but for some reason, it seems to crash at Cupertino.</p> <p>I think (hope) I know what the problem is now but I just want to verify before I upload a new version and have to wait another week before getting disappointed again.</p> <p>Anyways, I am using class methods, something from what I have understood is similar but not exactly like static java methods.</p> <p>This is how I uploaded the app.</p> <pre><code>@implementation AlphaClass -(void) initProgram{ NSString * value = [BetaClass methodB]; } @end @implementation BetaClass +(NSString*) methodA{ //DO STUFF THEN RETURN } +(NSString*) methodB{ NSString *value = [self methodA]; //DO MORE STUFF THEN RETURN } @end </code></pre> <p>This apparently craches, even doe I cant replicate the crash.</p> <pre><code>Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x432b2b10 Crashed Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libobjc.A.dylib 0x3a3c3526 objc_retain + 6 1 Appname 0x0008928a +[BetaClass methodA] + 418 2 Appname 0x000894de +[BetaClass methodB] + 170 3 Appname 0x000908f6 __44-[AlphaClass initProgram]_block_invoke + 362 </code></pre> <p>So, from what I have understood, I must change the "self" into the class name. so the code should look like this.</p> <pre><code>@implementation BetaClass +(NSString*) methodA{ //DO STUFF THEN RETURN } +(NSString*) methodB{ NSString *value = [BetaClass methodA]; //DO MORE STUFF THEN RETURN } @end </code></pre> <p>Again, I might be completely lost, please let me know if I am on the right track</p> <p>Thanks for any replies.</p> <p>Edit. this is how methodA look like</p> <pre><code>+(NSString*) methodA{ NetworkStatus netStatus = [[Reachability reachabilityForInternetConnection]currentReachabilityStatus]; if(netStatus == NotReachable) { return NETWORK_ERROR; } @try { DynamoDBGetItemRequest *request = [[DynamoDBGetItemRequest alloc] initWithTableName:TABLE_CONTENT andKey:[[DynamoDBKey alloc] initWithHashKeyElement: [[DynamoDBAttributeValue alloc] initWithS:[ItemHelpClass getItem]]]]; DynamoDBGetItemResponse *response = [[AmazonClientManager ddb] getItem:request]; if(response){ if(((DynamoDBAttributeValue *)[response.item objectForKey:@"UID_ID"]).s){ return ITEM_BORROWED; } else{ return ITEM_NOT_BORROWED; } } }@catch (NSException *exception) { [AmazonClientManager wipeCredentialsOnAuthError:exception]; } return NETWORK_ERROR; } </code></pre>
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    1. COnormally you would have to use the ClassName instead of self, but when you are inside of a class method calling another class method, self is the same as the ClassName anyway.
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    2. CO`-(void) init{` <-- is that your actual code?
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    3. COyeah i dont think that is your problem, the call list shown there looks like something in methodA is the culprit of your crash.
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