NSDictionary的字节大小

- (NSUInteger)getDictionarySize:(NSDictionary *)dictionary {
    NSUInteger size = 0;
    for (id key in dictionary) {
        size += [key lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
        id value = [dictionary objectForKey:key];
        if ([value isKindOfClass:[NSString class]]) {
            size += [value lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
        } else if ([value isKindOfClass:[NSData class]]) {
            size += [value length];
        } else if ([value isKindOfClass:[NSDictionary class]]) {
            size += [self getDictionarySize:value];
        } else if ([value isKindOfClass:[NSArray class]]) {
            size += [self getArraySize:value];
        }
    }
    return size;
}

- (NSUInteger)getArraySize:(NSArray *)array {
    NSUInteger size = 0;
    for (id value in array) {
        if ([value isKindOfClass:[NSString class]]) {
            size += [value lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
        } else if ([value isKindOfClass:[NSData class]]) {
            size += [value length];
        } else if ([value isKindOfClass:[NSDictionary class]]) {
            size += [self getDictionarySize:value];
        } else if ([value isKindOfClass:[NSArray class]]) {
            size += [self getArraySize:value];
        }
    }
    return size;
}