自动单元格选择UITableView [英] Automatically cell selected UITableView

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本文介绍了自动单元格选择UITableView的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我的UITableView通过PopOverViewController打开,所以如何在app加载后自动加载其中一个单元格,

My UITableView opens via PopOverViewController , so How can I load one of these cells automatically after app did load ,

MainViewController上的单元格选择过程

the cell selecting process on MainViewController

- (void)setDetailItem:(id)newDetailItem {

    if (detailItem != newDetailItem) {
        [detailItem release];
        detailItem = [newDetailItem retain];

        //---update the view---
        label.text = [detailItem description];
    }

}

并在TableViewController中选择单元格:

and cell selecting in TableViewController :

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

    myAppDelegate *appDelegate = 
    [[UIApplication sharedApplication] delegate];
    appDelegate.viewController.detailItem = [list objectAtIndex:indexPath.row];  

}

我在TableViewController中使用此代码但不起作用!这意味着按下popOver按钮后代码只需突出显示单元格!

I use this code in TableViewController but does not work ! It means after press the the popOver button the code just highlight the cell !!

 [myTableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0] animated:NO scrollPosition:0];

我在上面的代码中使用了不同的方法,例如 viewDidAppear viewWillAppear didSelectRowAtIndexPath 和...

I used above code in different methods like viewDidAppear , viewWillAppear and didSelectRowAtIndexPath and ...

谢谢

推荐答案

当你打电话给 selectRowAtIndexPath:animated:scrollPosition: tableView:didSelectRowAtIndexPath:在委托上调用而不是

When you call selectRowAtIndexPath:animated:scrollPosition:, tableView:didSelectRowAtIndexPath: is not called on the delegate.

来自 selectRowAtIndexPath:animated:scrollPosition: reference:

From the selectRowAtIndexPath:animated:scrollPosition: reference:


调用此方法不会导致委托收到
tableView:willSelectRowAtIndexPath:或
tableView:didSelectRowAtIndexPath:message,也不会发送
UITableViewSelectionDidChangeNotifica对观察者的通知。

Calling this method does not cause the delegate to receive a tableView:willSelectRowAtIndexPath: or tableView:didSelectRowAtIndexPath: message, nor will it send UITableViewSelectionDidChangeNotification notifications to observers.

所以,不要只是调用 selectRowAtIndexPath:animated:scrollPosition:

 [myTableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0] animated:NO scrollPosition:0];

您可以手动调用委托方法:

you could call the delegate methods manually:

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];

if ([myTableView.delegate respondsToSelector:@selector(tableView:willSelectRowAtIndexPath:)]) {
    [myTableView.delegate tableView:self.tableView willSelectRowAtIndexPath:indexPath];
}

[myTableView selectRowAtIndexPath:indexPath animated:YES scrollPosition: UITableViewScrollPositionNone];    

if ([myTableView.delegate respondsToSelector:@selector(tableView:didSelectRowAtIndexPath:)]) {
    [myTableView.delegate tableView:self.tableView didSelectRowAtIndexPath:indexPath];
}

这篇关于自动单元格选择UITableView的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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