Question

我是Objective-C的新手，我正在尝试用这种方法创建一个已经有BeaconDemoMasterViewController类的代码：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"showDetail"]) {

    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
    if (indexPath)
    {
        AppDelegate* delegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];

        [[segue destinationViewController] setDetailItem:[delegate notificationRegionAtIndex:indexPath.row]];
    }

}
}

此方法在BeaconDemoDetailViewController类中调用其他方法：

- (void)setDetailItem:(id)newDetailItem
{
// Actualiza los valores si han cambiado
if (_detailItem != newDetailItem) {
    _detailItem = newDetailItem;
    // Actualiza la vista.
    [self configureView];
}
}

它工作正常，但我需要在方法setDetailItem上有另一个参数。我已经像这样修改了它们：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"showDetail"]) {

    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
    if (indexPath)
    {
        AppDelegate* delegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];

        [[segue destinationViewController] setDetailItem:[delegate notificationRegionAtIndex:indexPath.row] Mallor:mayor];
    }

}
}

'mayor'值已经为测试定义如下： NSString * mayor = @“1”;在课程开始时

并且在另一个类中，方法保持这样：

- (void)setDetailItem:(id)newDetailItem Mallor:(NSString *)mallor
{
mayor = mallor;
// Actualiza los valores si han cambiado
if (_detailItem != newDetailItem) {
    _detailItem = newDetailItem;
    // Actualiza la vista.
    [self configureView];
}
}

然后我收到错误“没有已知的选择器实例方法'setDetailItem：Mallor：'”

没有已知的选择器'方法实例方法：参数'

0 个答案: