在Objective C iOS中为相同值组合对象数组

时间:2017-07-24 09:29:35

标签: ios objective-c iphone compare

我有一个自定义对象名称数组" finalBarListArray"与实体" BarCodeSKULists" (参见附件1)其中包含' sales_sub_category_name(字符串类型)',count(int类型)和另一个自定义对象名称的数组' arrayBarCodeSKUList(BarCodeSKUList)' (参见附件2/3/4)。

请参阅以下屏幕截图:

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现在我需要创建一个数组,并且必须检查是否存在相同的' sales_sub_category_name'然后需要添加他们的' arrayBarCodeSKUList'在一个。

与上面的数组" finalBarListArray"一样,有三个元素,包括sales_sub_category_name' ENVY 17'' ENVY 15' &安培; ' ENVY 15',所以我需要将第二个和第三个元素合并为一个用于第二个数组索引。这意味着输出应该只有两个元素,第一个元素应该有(count = 1& one arrayBarCodeSKUList),第二个元素应该有(count = 2& two arrayBarCodeSKUList)。

请告诉我。谢谢!

2 个答案:

答案 0 :(得分:1)

使用以下方法合并自定义对象数组,这些对象具有相同的sales_sub_category_names

- (NSArray *)mergeDuplicate {

    NSMutableDictionary *mergedDictionary = [[NSMutableDictionary alloc]init];

    // Use sales_sub_category_name value as a key for the dictioanry.

    [finalBarListArray enumerateObjectsUsingBlock:^(BarCodeSKULists * _Nonnull object, NSUInteger idx, BOOL * _Nonnull stop) {

        id existingItem = [mergedDictionary valueForKey:object.sales_sub_category_name];
        if (existingItem) {
            // If object exist then check that type is NSMutableArray or not
            if ([existingItem isKindOfClass:[NSMutableArray class]]) {

                // If yes then append with existing array
                [existingItem addObject:object];
                mergedDictionary[object.sales_sub_category_name] = existingItem;
            } else if ([existingItem isKindOfClass:[BarCodeSKULists class]]) {
                // Else if the object is `BarCodeSKULists ` class then create array and added previous item and current item into one array
                NSMutableArray *itemList = [NSMutableArray arrayWithObjects:existingItem, object, nil];
                mergedDictionary[object.sales_sub_category_name] = itemList;
            }
        } else {
            // If it is first time then add it to the dictionary
            mergedDictionary[object.sales_sub_category_name] = object;
        }

    }];

    NSLog(@"%@", mergedDictionary.allValues);
    return mergedDictionary.allValues;
}

mergedDictionary.allValues会提供预期的项目数组

更新:

根据讨论。

- (NSArray *)mergeDuplicate:(NSMutableArray *) list{

    NSMutableDictionary *mergedDictionary = [[NSMutableDictionary alloc]init];

    // Use sales_sub_category_name value as a key for the dictioanry.

    [list enumerateObjectsUsingBlock:^(BarCodeSKUList * _Nonnull object, NSUInteger idx, BOOL * _Nonnull stop) {

        BarCodeSKUList *existingItem = [mergedDictionary valueForKey:object.sales_sub_category_name];
        if (existingItem) {
            [existingItem.arrayBarCodeSKUList addObjectsFromArray:object.arrayBarCodeSKUList];
            mergedDictionary[object.sales_sub_category_name] = existingItem;
        } else {
            // If it is first time then add it to the dictionary
            mergedDictionary[object.sales_sub_category_name] = object;
        }

    }];


    return mergedDictionary.allValues;
}

答案 1 :(得分:1)

- (NSArray *)mergeObject{

NSMutableDictionary *dic = [NSMutableDictionary new];

[_originArray enumerateObjectsUsingBlock:^(BarCodeSKULists*  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
    id item = [dic objectForKey:obj.sales_sub_category_name];

    if (item) {
        BarCodeSKULists *list = (BarCodeSKULists *)item;
        [list.arrayBarCodeSKUList addObject:obj.BarCodeSKUList];
        list.count = (int)list.arrayBarCodeSKUList.count;
        dic[obj.sales_sub_category_name] = list;
    }
    else{
        dic[obj.sales_sub_category_name] = obj;
    }
}];

return dic.allValues;

}