说明:

根据传入参数，快速生成字典；
在系统的基础上进行修改，过滤掉字符串长度为0 的参数；

Demo地址
https://github.com/MyHZ/DictionaryFilteredExample

原文件地址：
https://github.com/MyHZ/DictionaryFiltered

CocoaPods支持：

pod 'DictionaryFiltered'

代码

#import <Foundation/Foundation.h>

#define FilteredDictionaryOfVariableBindings(...) [NSDictionary FilteredDictionaryOfVariableBindings:@"" # __VA_ARGS__, __VA_ARGS__]

@interface NSDictionary (ParaProduct)

+ (NSDictionary *)FilteredDictionaryOfVariableBindings:(NSString *)firstArg, ...;

@end

#import "NSDictionary+ParaProduct.h"

@implementation NSDictionary (ParaProduct)

+ (NSDictionary *)FilteredDictionaryOfVariableBindings:(NSString *)firstArg, ...
{
    firstArg = [firstArg stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    
    NSArray *allPara = [firstArg componentsSeparatedByString:@","];
    NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:allPara.count];
    
    if (firstArg)
    {
        __block va_list list;
        va_start(list, firstArg);
        
        for (id  _Nonnull para in allPara)
        {
            id arg = va_arg(list, id);
            if (arg)
            {
                if ([arg isKindOfClass:[NSString class]])
                {
                    arg = [(NSString *)arg stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
                    if ([(NSString *)arg length] != 0)
                    {
                        [dic setObject:arg forKey:para];
                    }
                }
                else
                {
                    [dic setObject:arg forKey:para];
                }
            }
        }
        va_end(list);
    }
    
    return dic;
}

@end

使用

NSString *sss1 = @"生于成";
    NSString *sss2 = @"";
    NSString *sss3 = @"333";
    NSString *sss4 = @"";
    NSString *sss5 = @"让发";
    NSString *sss6 = @(333);
    NSString *sss9 = @"";
    NSString *sss7 = nil;
    NSString *sss8 = @"你好是 ";

    NSDictionary *dic = FilteredDictionaryOfVariableBindings(sss1,sss2,sss3,sss4,sss5,sss6,sss7,sss8,nil);
    NSLog(@"%@",dic);

结果

{
    sss1 = "\U751f\U4e8e\U6210";
    sss3 = 333;
    sss5 = "\U8ba9\U53d1";
    sss6 = 333;
    sss8 = "\U4f60\U597d\U662f";
}