我已经实现了一个自定义表格单元格,并在表格进入cellForRowAtIndexPath时收到运行时错误(“无法识别的选择器发送到实例”).尝试实例化自定义单元格时发生错误.我之前已经成功实现了这一目标,但现在错误不会消失.我有一个prtotype单元格,其自定义类属性设置为自定义单元格UITableViewCell子类.这是自定义单元格：
#import "FavoriteCell.h"
@implementation FavoriteCell
@synthesize lblGaugeID,lblMainTitle,bgImage;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
bgImage = [UIImage imageNamed:@"tableCellBG.png"];
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
UIColor *transparentBG = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0];
UIColor *foregroundColor = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0];
//UIColor *shadowColot = [UIColor colorWithWhite:0.75 alpha:1.0];
CGSize size = self.contentView.frame.size;
self.backgroundView = [[UIImageView alloc] initWithImage:bgImage];
self.lblMainTitle = [[UILabel alloc] initWithFrame:CGRectMake(8.0,0.5,size.width-16,size.height-40)];
[self.lblMainTitle setFont:[UIFont systemFontOfSize:12.0]];
[self.lblMainTitle setTextAlignment:NSTextAlignmentLeft];
[self.lblMainTitle setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
[self.lblMainTitle setBackgroundColor:transparentBG];
self.lblGaugeID = [[UILabel alloc] initWithFrame:CGRectMake(20.0,31.0,size.height-40)];
[self.lblGaugeID setFont:[UIFont boldSystemFontOfSize:15.0]];
[self.lblGaugeID setTextAlignment:NSTextAlignmentLeft];
[self.lblGaugeID setTextColor:foregroundColor];
[self.lblGaugeID setShadowOffset:CGSizeMake(0.2,0.2)];
[self.lblGaugeID setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
[self.lblGaugeID setBackgroundColor:transparentBG];
[self.contentView addSubview:lblGaugeID];
[self.contentView addSubview:lblMainTitle];
}
return self;
}
@end
这里是它的实例(摘自我的视图控制器类)：
-(FavoriteCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *cellIdentifier = @"favoriteCell";
FavoriteCell *cell = (FavoriteCell*)[tableView dequeueReusableCellWithIdentifier:cellIdentifier]; //error
if(cell == nil){
cell = [[FavoriteCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
NSString *siteName = [faveKeys objectAtIndex:indexPath.row];
[cell.lblMainTitle setText:siteName];
[cell.lblGaugeID setText:[allFavorites objectForKey:siteName]];
return cell;
}
这是完整的错误消息：
* Terminating app due to uncaught exception ‘NSInvalidArgumentException’,reason: ‘-[__NSCFConstantString instantiateWithOwner:options:]: unrecognized selector sent to instance 0x24bb0’
谁能提供一些关于检查的建议？谢谢！维维安
解决方法
使用 – (void)registerNib：(UINib *)nib forCellReuseIdentifier
