iphone - 如何创建一个 NSDictionarys 数组

Question

我想获取我存储到我的核心数据对象之一的信息，并将这些数据存储到 NSArray的 NSDictionary对象，以便我可以将此数组发送到我的一个 View 并在表格 View 中显示数据。

但是我不太确定如何获得 NSDictionary进入NSArray ，这是我的获取请求，希望有人可以帮我把 NSDictionary变成 NSArray ..我不确定如何执行此操作，因为我如何循环通过核心数据对象。

// Test listing all FailedBankInfos from the store
        NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
        NSEntityDescription *entity = [NSEntityDescription entityForName:@"Manuf" inManagedObjectContext:context];
        [fetchRequest setEntity:entity];

        NSError *error; 

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

        NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:&error];
        for (Manuf *manuf in fetchedObjects) {
            [tempManufacturerDictionary setObject:manuf.hasMod forKey:@"HASMOD"];
            [tempManufacturerDictionary setObject:manuf.isLocked forKey:@"ISLOCKED"];
            [tempManufacturerDictionary setObject:manuf.isReg forKey:@"ISREG"];
            [tempManufacturerDictionary setObject:manuf.main forKey:@"MAIN"];

            // How do I put the Dictionary above into an array?
        }

任何帮助，将不胜感激。

Answer 1

您可以实例化 NSMutableArray在进入循环之前，并声明一个新的NSMutableDictionary在每次迭代中，像这样:

    NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:&error];
    NSMutableArray *array = [NSMutableArray array];
    for (Manuf *manuf in fetchedObjects) {
        NSMutableDictionary *tempManufacturerDictionary = [NSMutableDictionary dictionary];
        [tempManufacturerDictionary setObject:manuf.hasMod forKey:@"HASMOD"];
        [tempManufacturerDictionary setObject:manuf.isLocked forKey:@"ISLOCKED"];
        [tempManufacturerDictionary setObject:manuf.isReg forKey:@"ISREG"];
        [tempManufacturerDictionary setObject:manuf.main forKey:@"MAIN"];

        [array addObject:tempManufacturerDictionary];
    }

您也可以设置 resultType您的提取请求为 NSDictionaryResultType并首先从获取请求中获取字典数组。