NSDictionary+Addition

对从后台取得数据进行安全处理

.h文件

@interface NSDictionary (SafeAccess)- (NSString*)stringForKey:(id)key;- (NSNumber*)numberForKey:(id)key;- (NSArray*)arrayForKey:(id)key;- (NSDictionary*)dictionaryForKey:(id)key;- (NSInteger)integerForKey:(id)key;- (BOOL)boolForKey:(id)key;- (float)floatForKey:(id)key;- (double)doubleForKey:(id)key;//CG- (CGFloat)CGFloatForKey:(id)key;- (CGPoint)pointForKey:(id)key;- (CGSize)sizeForKey:(id)key;- (CGRect)rectForKey:(id)key;@end#pragma --mark NSMutableDictionary setter@interface NSMutableDictionary(SafeAccess)-(void)setObj:(id)i forKey:(NSString*)key;-(void)setString:(NSString*)i forKey:(NSString*)key;-(void)setBool:(BOOL)i forKey:(NSString*)key;-(void)setInt:(int)i forKey:(NSString*)key;-(void)setInteger:(NSInteger)i forKey:(NSString*)key;-(void)setCGFloat:(CGFloat)f forKey:(NSString*)key;-(void)setFloat:(float)i forKey:(NSString*)key;-(void)setPoint:(CGPoint)o forKey:(NSString*)key;-(void)setSize:(CGSize)o forKey:(NSString*)key;-(void)setRect:(CGRect)o forKey:(NSString*)key;@end

.m文件

@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;}- (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;}- (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#pragma --mark NSMutableDictionary setter@implementation NSMutableDictionary (SafeAccess)-(void)setObj:(id)i forKey:(NSString*)key{    if (i!=nil) {        self[key] = i;    }}-(void)setString:(NSString*)i forKey:(NSString*)key;{    [self setValue:i forKey:key];}-(void)setBool:(BOOL)i forKey:(NSString *)key{    self[key] = @(i);}-(void)setInt:(int)i forKey:(NSString *)key{    self[key] = @(i);}-(void)setInteger:(NSInteger)i forKey:(NSString *)key{    self[key] = @(i);}-(void)setCGFloat:(CGFloat)f forKey:(NSString *)key{    self[key] = @(f);}-(void)setFloat:(float)i forKey:(NSString *)key{    self[key] = @(i);}-(void)setPoint:(CGPoint)o forKey:(NSString *)key{    self[key] = NSStringFromCGPoint(o);}-(void)setSize:(CGSize)o forKey:(NSString *)key{    self[key] = NSStringFromCGSize(o);}-(void)setRect:(CGRect)o forKey:(NSString *)key{    self[key] = NSStringFromCGRect(o);}@end