ios - Tableview 单元格每次加载时都会重新加载多个表格单元格

Question

我正在按如下方式发出获取请求，

    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
        NSFetchRequest *request = [[NSFetchRequest alloc]initWithEntityName:@"PendingShipmentDetails"];
 NSEntityDescription *entity = [NSEntityDescription entityForName:@"PendingShipmentDetails" inManagedObjectContext:self.managedObjectContext];
    [fetchRequest setEntity:entity];

然后我在 viewDidLoad 方法中将获取的记录添加到数组中...

NSArray *result = [self.managedObjectContext executeFetchRequest:request error:&error];
    if (result.count > 0) {
        int i;
        amountArray = [[NSMutableArray alloc] init];
        statusArray = [[NSMutableArray alloc]init];
        shipmentReferenceNumberArray = [[NSMutableArray alloc]init];
        invoiceNumberArray = [[NSMutableArray alloc]init];
        for (i = 0; i < [result count]; i++) {
            pending = (NSManagedObject *)[result objectAtIndex:i];
            [shipmentReferenceNumberArray addObject:[pending valueForKey:@"shipmentno"]];
            [invoiceNumberArray addObject:[pending valueForKey:@"invoice_no"]];
            [amountArray addObject:[pending valueForKey:@"amount"]];
            [statusArray addObject: [pending valueForKey:@"status"]];
        }

    } else {
        NSLog(@"SORRY");
    }

问题是，由于在 for 循环中添加了对象，所以当我导航到表格单元格时，每次都会多次使用相同的值填充表格单元格。但是，如果我将元素添加到数组中，则在 for 循环之外，只会添加一个元素，因此在任何时候都只能看到一个表格单元格。我怎样才能解决这个问题？

Answer 1

你走错了方向您可以使用 enumerateObjectsUsingBlock 而不是使用 for 循环

[ChildList enumerateObjectsUsingBlock:^(NSDictionary *obj, NSUInteger idx, BOOL * _Nonnull stop) {

        Child = (ChildListModel*)[[ObjectBuilder builder] objectFromJSON:obj className:NSStringFromClass([ChildListModel class])];

        if (Child) {
            [originalList addObject:Child];
        }
    }];