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PORunning a loop on AddressBook - Received memory warning
 

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  1. PORunning a loop on AddressBook - Received memory warning
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    <p>I'm running this code in order to create an image contains the caller's name, and setting it to the specific contact, but while it runs, I get Received memory warning and it crashes...</p> <pre><code>-(void)RunActionInBlack{ //black bg - white text ABAddressBookRef addressBook; CFErrorRef error = NULL; addressBook = ABAddressBookCreate(); CFArrayRef array=ABAddressBookCopyArrayOfAllPeople(addressBook); ABRecordRef person; int len=CFArrayGetCount(array); for (int i = 0; i&lt;len; i++){ person = CFArrayGetValueAtIndex(array, i); details.text = [NSString stringWithFormat:@"Done. %d of %d contacts", i+1,len]; [act stopAnimating]; NSString *firstName = (NSString *)ABRecordCopyValue(person, kABPersonFirstNameProperty); NSString *lastName = (NSString *)ABRecordCopyValue(person, kABPersonLastNameProperty); if (firstName == NULL) { firstName = @""; } if (lastName == NULL ) { lastName = @""; } UIImage *im = [self addText:[UIImage imageNamed:@"black.png"] andText:[NSString stringWithFormat:@"%@ %@",firstName, lastName]]; NSData *dataRef = UIImagePNGRepresentation(im); ABPersonSetImageData(person, (CFDataRef)dataRef, &amp;error); [lastName release]; [firstName release]; [dataRef release]; CFRelease(dataRef); [im release]; } ABAddressBookSave(addressBook, &amp;error); CFRelease(array); CFRelease(addressBook); } </code></pre> <p>Creating the text:</p> <pre><code>-(UIImage *)addText:(UIImage *)img andText:(NSString*)txt{ UIImageView *imView =[[UIImageView alloc] initWithImage:img ]; UIView *tempView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, img.size.width, img.size.height)]; [tempView addSubview:imView]; UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, -100, img.size.width, img.size.height)]; [label setText:txt]; [label setFont:[UIFont boldSystemFontOfSize:160]]; [label setTextColor:[UIColor whiteColor]]; [label setTextAlignment:UITextAlignmentCenter]; [label setBackgroundColor:[UIColor clearColor]]; [label setNumberOfLines:10]; [tempView addSubview:label]; UIGraphicsBeginImageContext(tempView.bounds.size); [tempView.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); [label release]; [tempView release]; [imView release]; return finalImage; } </code></pre> <p>I don't have any memory leaks or something...</p> <p>I'm running those methods like: <code>[self performSelectorInBackground:@selector(RunActionInWhite) withObject:nil];</code></p> <p>Thanks in advance.</p>
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      1. PORunning a loop on AddressBook - Received memory warning
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    1. COit seem the memory management is a bit poor in this code. the bridging is a massive chaos between the `CF` references and the Objective C objects... e.g. the `dataRef` is **not** `CF` reference, the `firstName` and `lastName` **are** `CF` references. these tiny things can cause serious memory leak.
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      1. PORunning a loop on AddressBook - Received memory warning
      1. USholex
 

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