UITableView从NIB文件加载自定义单元格会引发NSInternalInconsistencyException [英] UITableView load a Custom Cell from NIB file throws NSInternalInconsistencyException

问题描述

在ios应用程序中，我有一个UITableView.在cellForRowAtIndexPath方法中，我需要使用其NIB名称返回一个自定义单元格.为此，我使用loadNibNamed. (加载"willDisplayCellforRowAtIndexPath"后，我将在单元格中填充数据)

In an ios application I have a UITableView. In the cellForRowAtIndexPath method I need to return a custom cell using it's NIB name. For that I use loadNibNamed. (I will fill the data in the cell after the load in the 'willDisplayCellforRowAtIndexPath')

MyItemCell是一个XIB文件(MyItemCell.xib)，其中包含2个UIImageView和一个UIButton(每个项都有一个标记)

MyItemCell is a XIB file (MyItemCell.xib) that containg 2 UIImageView and a UIButton (Each item has a tag)

这是我的代码:

在我的viewController中

In my viewController

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return [ViewHelper loadCustomCellWithNibName:@"MyItemCell" owner:self];
}

以及从NIB加载自定义单元格的方法

And the method to load the Custom cell from NIB

+ (UITableViewCell *) loadCustomCellFromNib:(NSString *)nibName owner:(id)owner
{
    UITableViewCell *cell = nil;
    NSArray *nibObjects = [[NSBundle mainBundle] loadNibNamed:nibName owner:owner options:nil];
    if([nibObjects count] > 0 )
    {
        cell = [nibObjects objectAtIndex:0];
    }
    else
    {
        NSLog(@"Failed to load %@ XIB file!", nibName);
    }
    return cell;
}

在所有测试中一切正常.但是，我收到了一些无法复制的用户的崩溃信息.

Everything works correctly in all the testings. However I received a crash from some users that I was unable to reproduce.

这是崩溃:

NSInternalInconsistencyException

Could not load NIB in bundle: 'NSBundle </var/mobile/Applications/7A24cE79-131F-523F-4C00-23B523ARG123/MyApp.app> (loaded)' with name 'MyItemCell'

堆栈跟踪:

0 CoreFoundation                        0x39b432a3 __exceptionPreprocess + 163 + 162

1 libobjc.A.dylib                       0x33a3297f objc_exception_throw + 31 + 30

2 CoreFoundation                        0x39b431c5 -[NSException initWithCoder:] + 1

3 UIKit                                 0x32e12491 -[UINib instantiateWithOwner:options:] + 1637 + 1636

4 UIKit                                 0x32e1a1d7 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 139 + 138

5 MyApp                                 0x00047ded +[ViewHelper loadCustomCellFromNib:owner:] (ViewHelper.m:349)

6 MyApp                                 0x00034003 -[BuildViewController tableView:cellForRowAtIndexPath:] (BuildViewController.m:2432)

7 UIKit                                 0x32cc0545 -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:withIndexPath:] + 413 + 412

8 UIKit                                 0x32ca530b -[UITableView(_UITableViewPrivate) _updateVisibleCellsNow:] + 1311 + 1310

9 UIKit                                 0x32cbc7c7 -[UITableView layoutSubviews] + 207 + 206

10 UIKit                                0x32c78803 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 259 + 258 

问题是我无法重现此崩溃.

The problem is that I was not able to reproduce this crash.

关于可能导致崩溃的原因的任何想法?或有任何避免此类错误的解决方案?

Any idea on what might have caused the crash? Or any solutions to avoid such an error?

非常感谢您的帮助

只需澄清一下，这在我正在进行的任何测试中都可以正常工作.此崩溃仅对1个用户出现1次，因此问题与代码无关.我只是在寻找可能在特定情况下导致此崩溃的原因.谢谢

Just to clarify more, This is working perfectly fine on any testing that I'm doing. This crash appeared only 1 time for 1 user so the problem is not with the code. I am just searching for reasons that might cause this crash in a very specific scenario. Thanks

推荐答案

要从NIB文件创建自定义单元格，请尝试

To create custom cell from NIB file try this

- (void)viewDidLoad
{
    [tableView registerNib:[UINib nibWithNibName:CellIdentifier bundle:nil] forCellReuseIdentifier:CellIdentifier];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    MyCell *cell = (MyCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    ......
    return cell;
}

CellIdentifier是NIB文件的名称，也用作单元标识符.

CellIdentifier is a name of NIB file, used also as cell identifier.

这篇关于UITableView从NIB文件加载自定义单元格会引发NSInternalInconsistencyException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！