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POMemory issues with NSUserDefaults
 

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  1. POMemory issues with NSUserDefaults
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    <p>I have spent hours trying to get my project working and I just can't get it working.</p> <p>Basically, I'm trying to use NSUserDefaults to save a custom object when the user hits a save button and load all the data up when the app loads. If there is no previous NSUserDefault saved, I want to set some defaults. In the end, I am getting EXC_BAD_ACCESS when trying to load a previously-saved NSUserDefault. It works fine the first load, when setting the starting data. And the thing is, when I try to enable NSZombieEnabled and the other env vars for it, it somehow loads fine without the EXC_BAD_ACCESS. So here's what I'm working with:</p> <p><strong>[App Delegate.h]</strong></p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #import "Note.h" @interface ToDoWallAppDelegate : NSObject &lt;UIApplicationDelegate&gt; { ... Note *note; } ... @property (retain) Note *note; @end </code></pre> <p><strong>[App Delegate.m]</strong></p> <pre><code>- (void)applicationDidFinishLaunching:(UIApplication *)application { ... note = [[Note alloc] init]; NSUserDefaults *stdDefaults = [NSUserDefaults standardUserDefaults]; NSData *noteData = [stdDefaults objectForKey:@"Note"]; if (noteData) { self.note = (Note *)[NSKeyedUnarchiver unarchiveObjectWithData:noteData]; } else { note.background = [UIImage imageNamed:@"Cork.jpg"]; note.picture = [UIImage imageNamed:@"Cork.jpg"]; note.font = [UIFont fontWithName:@"Helvetica" size:18.0f]; note.fontColor = [UIColor blackColor]; note.fontNameIndex = 9; note.fontSizeIndex = 6; note.fontColorIndex = 0; note.backgroundIndexPath = [NSIndexPath indexPathForRow:0 inSection:0]; note.pictureIndexPath = [NSIndexPath indexPathForRow:0 inSection:0]; note.text = @"Type note here..."; } ... } - (void)dealloc { ... [note release]; [super dealloc]; } </code></pre> <p><strong>[View Controller]</strong></p> <pre><code>- (void)saveNote { ... NSUserDefaults *stdDefaults = [NSUserDefaults standardUserDefaults]; if (stdDefaults) { NSData *noteData = [NSKeyedArchiver archivedDataWithRootObject:UIAppDelegate.note]; [stdDefaults setObject:noteData forKey:@"Note"]; [stdDefaults synchronize]; } } </code></pre> <p><strong>[Note.h]</strong></p> <pre><code>#import &lt;Foundation/Foundation.h&gt; @interface Note : NSObject &lt;NSCoding&gt; { UIImage *background, *picture; UIFont *font; UIColor *fontColor; int fontNameIndex, fontSizeIndex, fontColorIndex; NSIndexPath *backgroundIndexPath, *pictureIndexPath; BOOL customBackground; NSString *text; } @property (retain) UIImage *background, *picture; @property (retain) UIFont *font; @property (retain) UIColor *fontColor; @property int fontNameIndex, fontSizeIndex, fontColorIndex; @property (retain) NSIndexPath *backgroundIndexPath, *pictureIndexPath; @property BOOL customBackground; @property (retain) NSString *text; - (Note *)init; @end </code></pre> <p><strong>[Note.m]</strong></p> <pre><code>#import "Note.h" @implementation Note @synthesize background, picture, font, fontColor, fontNameIndex, fontSizeIndex, fontColorIndex, customBackground, backgroundIndexPath, pictureIndexPath, text; - (Note *)init { if (self = [super init]) { background = [[UIImage alloc] init]; picture = [[UIImage alloc] init]; font = [[UIFont alloc] init]; fontColor = [[UIColor alloc] init]; backgroundIndexPath = [[NSIndexPath alloc] init]; pictureIndexPath = [[NSIndexPath alloc] init]; text = [[NSString alloc] init]; } return self; } - (void)encodeWithCoder:(NSCoder *)encoder { NSData *dataBackground = UIImagePNGRepresentation(background); NSData *dataPicture = UIImagePNGRepresentation(picture); [encoder encodeObject:dataBackground forKey:@"dataBackground"]; [encoder encodeObject:dataPicture forKey:@"dataPicture"]; [encoder encodeObject:font forKey:@"font"]; [encoder encodeObject:fontColor forKey:@"fontColor"]; [encoder encodeInt:fontSizeIndex forKey:@"fontSizeIndex"]; [encoder encodeInt:fontColorIndex forKey:@"fontColorIndex"]; [encoder encodeBool:customBackground forKey:@"customBackground"]; [encoder encodeObject:backgroundIndexPath forKey:@"backgroundIndexPath"]; [encoder encodeObject:pictureIndexPath forKey:@"pictureIndexPath"]; [encoder encodeObject:text forKey:@"text"]; } - (Note *)initWithCoder:(NSCoder *)decoder { if (self = [super init]) { NSData *dataBackground = [decoder decodeObjectForKey:@"dataBackground"]; NSData *dataPicture = [decoder decodeObjectForKey:@"dataPicture"]; background = [[UIImage imageWithData:dataBackground] retain]; picture = [[UIImage imageWithData:dataPicture] retain]; font = [[decoder decodeObjectForKey:@"font"] retain]; fontColor = [[decoder decodeObjectForKey:@"fontColor"] retain]; fontNameIndex = [decoder decodeIntForKey:@"fontNameIndex"]; fontColorIndex = [decoder decodeIntForKey:@"fontColorIndex"]; customBackground = [decoder decodeBoolForKey:@"customBackground"]; backgroundIndexPath = [[decoder decodeObjectForKey:@"backgroundIndexPath"] retain]; text = [[decoder decodeObjectForKey:@"text"] retain]; } return self; } - (void)dealloc { [super dealloc]; [background release]; [picture release]; [font release]; [fontColor release]; [backgroundIndexPath release]; [pictureIndexPath release]; [text release]; } @end </code></pre> <p>I really need some help I appreciate it.</p> <p>Edit:</p> <p>Btw, there are also lines from other files that edit the App Delegate's Note object, such as:</p> <pre><code>#define UIAppDelegate ((ToDoWallAppDelegate *)[UIApplication sharedApplication].delegate) ... UIAppDelegate.note.backgroundIndexPath = indexPath; </code></pre> <p>Edit:</p> <p>This is what debugger wrote:</p> <pre><code>#0 0x90be9ed7 in objc_msgSend #1 0x03b05210 in ?? #2 0x000023ce in -[ToDoWallAppDelegate setNote:] at ToDoWallAppDelegate.m:14 #3 0x00002216 in -[ToDoWallAppDelegate applicationDidFinishLaunching:] at ToDoWallAppDelegate.m:35 </code></pre> <p>Which are:</p> <pre><code>note.text = @"Type note here..."; //and @synthesize window, note; </code></pre>
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    1. USGeorg Fritzsche
    1. USKurbz
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    1. COI would also suggest posting on the Apple Developer Forum.
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      1. USJason McCreary
 

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