NSDictionary-Categories

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#import "NSDictionary+SafeAccess.h"@implementation NSDictionary (SafeAccess)- (NSString*)stringForKey:(id)key{    id value = [self objectForKey:key];    if (value == nil || value == [NSNull null])    {        return @"";    }    if ([value isKindOfClass:[NSString class]]) {        return (NSString*)value;    }    if ([value isKindOfClass:[NSNumber class]]) {       return [value stringValue];    }        return nil;}- (NSNumber*)numberForKey:(id)key{    id value = [self objectForKey:key];    if ([value isKindOfClass:[NSNumber class]]) {        return (NSNumber*)value;    }    if ([value isKindOfClass:[NSString class]]) {        NSNumberFormatter * f = [[NSNumberFormatter alloc] init];        [f setNumberStyle:NSNumberFormatterDecimalStyle];        return [f numberFromString:(NSString*)value];    }    return nil;}- (NSArray*)arrayForKey:(id)key{    id value = [self objectForKey:key];    if (value == nil || value == [NSNull null])    {        return nil;    }    if ([value isKindOfClass:[NSArray class]])    {        return value;    }    return nil;}- (NSDictionary*)dictionaryForKey:(id)key{    id value = [self objectForKey:key];    if (value == nil || value == [NSNull null])    {        return nil;    }    if ([value isKindOfClass:[NSDictionary class]])    {        return value;    }    return nil;}- (NSInteger)integerForKey:(id)key{    id value = [self objectForKey:key];    if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSString class]] || [value isKindOfClass:[NSNumber class]])    {        return [value integerValue];    }    return 0;}- (NSUInteger)unsignedIntegerForKey:(id)key{    id value = [self objectForKey:key];    if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSString class]] || [value isKindOfClass:[NSNumber class]])    {        return [value unsignedIntegerValue];    }    return 0;}- (BOOL)boolForKey:(id)key{    id value = [self objectForKey:key];        if (value == nil || value == [NSNull null])    {        return NO;    }    if ([value isKindOfClass:[NSNumber class]])    {        return [value boolValue];    }    if ([value isKindOfClass:[NSString class]])    {        return [value boolValue];    }    return NO;}- (int16_t)int16ForKey:(id)key{    id value = [self objectForKey:key];        if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSNumber class]])    {        return [value shortValue];    }    if ([value isKindOfClass:[NSString class]])    {        return [value intValue];    }    return 0;}- (int32_t)int32ForKey:(id)key{    id value = [self objectForKey:key];        if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSNumber class]] || [value isKindOfClass:[NSString class]])    {        return [value intValue];    }    return 0;}- (int64_t)int64ForKey:(id)key{    id value = [self objectForKey:key];        if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSNumber class]] || [value isKindOfClass:[NSString class]])    {        return [value longLongValue];    }    return 0;}- (char)charForKey:(id)key{    id value = [self objectForKey:key];        if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSNumber class]] || [value isKindOfClass:[NSString class]])    {        return [value charValue];    }    return 0;}- (short)shortForKey:(id)key{    id value = [self objectForKey:key];        if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSNumber class]])    {        return [value shortValue];    }    if ([value isKindOfClass:[NSString class]])    {        return [value intValue];    }    return 0;}- (float)floatForKey:(id)key{    id value = [self objectForKey:key];        if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSNumber class]] || [value isKindOfClass:[NSString class]])    {        return [value floatValue];    }    return 0;}- (double)doubleForKey:(id)key{    id value = [self objectForKey:key];        if (value == nil || value == [NSNull null])    {        return 0;    }    if ([value isKindOfClass:[NSNumber class]] || [value isKindOfClass:[NSString class]])    {        return [value doubleValue];    }    return 0;}//CG- (CGFloat)CGFloatForKey:(id)key{    CGFloat f = [self[key] doubleValue];    return f;}- (CGPoint)pointForKey:(id)key{    CGPoint point = CGPointFromString(self[key]);    return point;}- (CGSize)sizeForKey:(id)key{    CGSize size = CGSizeFromString(self[key]);    return size;}- (CGRect)rectForKey:(id)key{    CGRect rect = CGRectFromString(self[key]);    return rect;}@end
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