PoolManager一部のデータをplistにロードして保存するというシングルトンオブジェクトがあります。私のプログラム全体を通して、何かが私のプールについて知る必要があるとき、それはその[PoolManager sharedPoolManager]プロパティを要求します。私はこれらのプロパティを設定する責任がある単一のビューを持っており、他のすべてはそれから読み取っただけです。それはすべてうまく機能していました、そしてそれから私が言うことができない理由もなく、それはクラッシュし始めました。設定NSZombieEnabled = YESすると、2つのNSStringプロパティのいずれかにアクセスすると、それらが解放されたように見えることがわかります。デバッガメッセージは次のとおりです。*** -[CFString respondsToSelector:]: message sent to deallocated instance 0x5a336d0
以前のスナップショットに戻ってみましたが、すべてが機能しましたが、それでもこれは実行されます。昨日からTimeMachineを使用してプロジェクトに戻ることもできましたが、それも同様です。私は困惑しています。
これがシングルトンオブジェクトコードです...明らかにゾンビであるのはsurfaceと文字列です。shapeすべての申し訳ありませんNSLogs
// MyPoolSingleton.h
#import <Foundation/Foundation.h>
#define kFileName @"data.plist"
@interface PoolManager : NSObject {
float volume;
float length;
float width;
float depth;
NSString *surface;
NSString *shape;
BOOL isMetric;
int fcTarget;
int cyaTarget;
int taTarget;
int chTarget;
int saltTarget;
}
@property float volume;
@property float length;
@property float width;
@property float depth;
@property (nonatomic, retain) NSString *surface;
@property (nonatomic, retain) NSString *shape;
@property BOOL isMetric;
@property int fcTarget;
@property int cyaTarget;
@property int taTarget;
@property int chTarget;
@property int saltTarget;
+ (PoolManager*)sharedPoolManager;
- (void)retrieveState;
- (void)saveState;
- (NSString*)dataFilePath;
@end
// MyPoolSingleton.m
#import "PoolManager.h"
@implementation PoolManager
@synthesize volume;
@synthesize length;
@synthesize width;
@synthesize depth;
@synthesize surface;
@synthesize shape;
@synthesize isMetric;
@synthesize fcTarget;
@synthesize cyaTarget;
@synthesize taTarget;
@synthesize chTarget;
@synthesize saltTarget;
static PoolManager* _sharedPoolManager = nil;
+ (PoolManager*)sharedPoolManager {
@synchronized([PoolManager class])
{
if (!_sharedPoolManager)
[[self alloc] init];
return _sharedPoolManager;
}
return nil;
}
+ (id)alloc {
@synchronized([PoolManager class])
{
NSAssert(_sharedPoolManager == nil, @"Attempted to allocate a second instance of a singleton.");
_sharedPoolManager = [super alloc];
return _sharedPoolManager;
}
return nil;
}
- (id)init {
self = [super init];
return self;
}
- (void)retrieveState {
NSLog(@"--retrieveState");
NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
NSLog(@" fileExistsAtPath: reading array from plist");
NSArray *array = [[NSArray alloc] initWithContentsOfFile:filePath];
volume = [[array objectAtIndex:0] floatValue];
NSLog(@" reading array: volume = %1.1f", volume);
length = [[array objectAtIndex:1] floatValue];
NSLog(@" reading array: length = %1.1f", length);
width = [[array objectAtIndex:2] floatValue];
NSLog(@" reading array: width = %1.1f", width);
depth = [[array objectAtIndex:3] floatValue];
NSLog(@" reading array: depth = %1.1f", depth);
self.surface = [array objectAtIndex:4];
NSLog(@" reading array: surface = %@", surface);
self.shape = [array objectAtIndex:5];
NSLog(@" reading array: shape = %@", shape);
isMetric = [[array objectAtIndex:6] boolValue];
NSLog(@" reading array: isMetric = %d", isMetric);
fcTarget = [[array objectAtIndex:7] intValue];
NSLog(@" reading array: fcTarget = %d", fcTarget);
cyaTarget = [[array objectAtIndex:8] intValue];
NSLog(@" reading array: cyaTarget = %d", cyaTarget);
taTarget = [[array objectAtIndex:9] intValue];
NSLog(@" reading array: taTarget = %d", taTarget);
chTarget = [[array objectAtIndex:10] intValue];
NSLog(@" reading array: chTarget = %d", chTarget);
saltTarget = [[array objectAtIndex:11] intValue];
NSLog(@" reading array: saltTarget = %d", saltTarget);
[array release];
}
else {
NSLog(@" !fileExistsAtPath: intitializing values to nil/zero");
volume = 0.0;
length = 0.0;
width = 0.0;
depth = 0.0;
surface = @"";
shape = @"";
isMetric = NO;
fcTarget = 0.0;
cyaTarget = 0.0;
taTarget = 0.0;
chTarget = 0.0;
saltTarget = 0.0;
}
}
- (void)saveState {
NSLog(@"--saveState");
NSMutableArray *array = [[NSMutableArray alloc] init];
NSLog(@" building array: volume = %1.1f", volume);
[array addObject:[NSNumber numberWithFloat:volume]];
NSLog(@" building array: length = %1.1f", length);
[array addObject:[NSNumber numberWithFloat:length]];
NSLog(@" building array: width = %1.1f", width);
[array addObject:[NSNumber numberWithFloat:width]];
NSLog(@" building array: depth = %1.1f", depth);
[array addObject:[NSNumber numberWithFloat:depth]];
NSLog(@" building array: surface = %@", surface);
[array addObject:surface];
NSLog(@" building array: shape = %@", shape);
[array addObject:shape];
NSLog(@" building array: isMetric = %d", isMetric);
[array addObject:[NSNumber numberWithBool:isMetric]];
NSLog(@" building array: fcTarget = %d", fcTarget);
[array addObject:[NSNumber numberWithInt:fcTarget]];
NSLog(@" building array: cyaTarget = %d", cyaTarget);
[array addObject:[NSNumber numberWithInt:cyaTarget]];
NSLog(@" building array: taTarget = %d", taTarget);
[array addObject:[NSNumber numberWithInt:taTarget]];
NSLog(@" building array: chTarget = %d", chTarget);
[array addObject:[NSNumber numberWithInt:chTarget]];
NSLog(@" building array: saltTarget = %d", saltTarget);
[array addObject:[NSNumber numberWithInt:saltTarget]];
[array writeToFile:[self dataFilePath] atomically:YES];
[array release];
}
- (NSString*)dataFilePath {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:kFileName];
}
- (void)dealloc {
[shape release], shape = nil;
[surface release], surface = nil;
[super dealloc];
}
@end