字典创建缺少字段情况iOS

 NSMutableDictionary *dict = [NSMutableDictionary dictionaryWithObjectsAndKeys:addressId,@"addressId",sendMethod,@"sendMethod",payType,@"payType",subGoodsMdf,@"subGoodsMdf",subGoodsCount,@"subGoodsCount",actIdStr,@"actIdStr",couponId,@"voucherId",scoreNumber,@"exchangeScore",nil];

// 以上情况：如果是中间的某一个字段为nil，则后面的即使不为空也不会显示出来

    if (couponId.length) {

        [dict setObject:couponId forKey:@"voucherId"];

    }

    if (scoreNumber>=0) {

        [dict setObject:scoreNumber forKey:@"exchangeScore"];

    }