Question

我在创建自定义表格单元格视图时遇到问题。

CustomCell.h

#import <UIKit/UIKit.h>

@interface CustomCell : UITableViewCell
@property (weak, nonatomic) IBOutlet UIImageView *imageView;
@property (weak, nonatomic) IBOutlet UILabel *date;
@property (weak, nonatomic) IBOutlet UILabel *title;
@property (weak, nonatomic) IBOutlet UILabel *content;

@end

CustomCell.m

#import "CustomCell.h"

@implementation CustomCell
@synthesize title, imageView, content, date;
- (void)awakeFromNib {
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

@end

TableViewController

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

    static NSString *simpleTableIdentifier = @"CustomCell";
    CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
    if (cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:simpleTableIdentifier owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }

    cell.title.text = [titles objectAtIndex:indexPath.row];
    cell.imageView.image = [UIImage imageNamed:[images objectAtIndex:indexPath.row]];
    cell.content.text = [shortTexts objectAtIndex:indexPath.row];
    cell.date.text = [dates objectAtIndex:indexPath.row];
    return cell;
}

并抛出异常

2014-10-14 19:06:59.290 pl.wroclaw.2017[7450:2962005] -[CustomCell _needsSetup]: unrecognized selector sent to instance 0x127d15bc0
2014-10-14 19:06:59.291 pl.wroclaw.2017[7450:2962005] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CustomCell _needsSetup]: unrecognized selector sent to instance 0x127d15bc0'
*** First throw call stack:
(0x1871a2084 0x1977d80e4 0x1871a9094 0x1871a5e48 0x1870ab08c 0x18ba63c08 0x18bc1a3bc 0x18bc0efc4 0x18ba04c60 0x18b921874 0x18b279d58 0x18b274944 0x18b2747e8 0x18b273fe8 0x18b273d6c 0x18bbae7f0 0x18bbaf69c 0x18bbad820 0x18f3a5640 0x18715a360 0x187159468 0x187157668 0x187085664 0x18b98f500 0x18b98a4f8 0x1000b65a4 0x197e46a08)
libc++abi.dylib: terminating with uncaught exception of type NSException

我尝试了一切，从删除xib并再次添加它。我用我之前的项目仔细检查了我的方法，它只是起作用。现在我的新项目并没有，我似乎无法找到任何解决方案。我试着找一些关于这个＆＃34; _needsSetup＆＃34;的信息，但我找不到。

感谢您的帮助。

Answer 1

我有同样的错误，因为我忘了在这个方法中返回一个单元格：

$(document).ready(function(){
    var select = $('#Select');

    if(select.val() == 'NL'){
        $('.for-be').hide();
    }

    select.change(function(){

        if(select.val() == 'NL'){
            $('.for-be').hide();
        } else if(select.val() == 'BE'){
            $('.for-be').show();
        }
    });
});

Answer 2

我不知道这是否有帮助，但推荐使用基于xib的单元格的方法是注册nib，而不是在cellForRowAtIndexPath：中加载nib。所以，在viewDidLoad中，put，

[self.tableView registerNib:[UINib nibWithNibName:<"your nib name here"> bundle:nil] forCellReuseIdentifier:@"CustomCell"];

删除if（cell == nil）子句。

在ios 8上使用xib抛出异常的自定义表格单元格视图

2 个答案: