在iOS应用程序中，为什么prepareForSegue在didSelectRowAtIndexPath之前发生

Question

我正在尝试将细胞行为更改为：     1）当单元格点击时，将单元格标记为完成，并带有复选标记     2）轻触Detail Disclosure Accessory按钮时，执行Segue。     3）在tableView中：didSelectRowAtIndexPath：我有：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    AWDelivery *delivery = [self.fetchedResultsController objectAtIndexPath:indexPath];
    [delivery toggleDelivered: delivery];
    [self configureCheckmarkForCell:cell withDelivery:delivery];
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    if (debugging) NSLog(@"[%s] [%d]", __PRETTY_FUNCTION__, __LINE__);
}

deselectRowAtIndexPath应该绕过segue，但事实并非如此。

NSLogs：     a）于2012-04-29 18：50：00.848交货[3148：fb03] [ - [DeliveryTVC prepareForSegue：sender：]] [168]     b）在2012-04-29 18：50：01.245交货[3148：fb03] [ - [DeliveryTVC tableView：didSelectRowAtIndexPath：]] [93]

请注意'didSelect'出现在'prepareForSegue'之后。

任何提示都将非常受欢迎。

Answer 1

您是否将详细信息列表附加到表格视图单元格？相反，尝试在两个视图控制器之间拖动它（包含表格的那个和你想要它去的那个）。

然后在[self performSegueWithIdentifier:@"MySegue"];时手动执行（tableView:accessoryButtonTappedForRowWithIndexPath:）。

Answer 2

如果您需要在prepareForSegue中获取当前的tableview选项，可以通过访问UITableViewController的tableView ivar来获取它;

[self tableView] indexPathForSelectedRow]

Answer 3

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Make sure your segue name in storyboard is the same as this line
    if ([[segue identifier] isEqualToString:@"ClaimDetailsSeque"])
    {
        DLog(@"destinationViewController %@",[[segue destinationViewController] topViewController]);
        //This syntax is needed when the seque is going through a Navagation Controller
        ClaimDetailsFormViewController* vc = (ClaimDetailsFormViewController*)[[segue destinationViewController] topViewController];

        //This the the way to get the object from the selected row via the FetchedResultsController
        //this is needed because prepareForSegue is called before didSelectRowAtIndexPath
        NSIndexPath *selectedIndexPath = [self->claimTableView indexPathForSelectedRow];
        ClaimHistory *object = [[self claimHistoryFetchedResultsController] objectAtIndexPath:selectedIndexPath];

        MyClaimHistorySM *myCH = [MyClaimHistorySM new];

        myCH.policyNumber = object.policyNumber;
        myCH.policyStatus = object.policyStatus;
        myCH.claimNumber  = object.claimNumber;
        myCH.insuredName = object.insuredName;
        myCH.lossDescription = object.lossDescription;
        myCH.dateOfLoss = object.dateOfLoss;
        myCH.incidentCloseDt = object.incidentCloseDt;

        vc.claimHistorySM = myCH;

    }

}