我正在为 UITableView 使用自定义单元格,并且上面有一个 UIButton。我想在触摸时切换按钮的标题。
在 cellForRowAtIndexPath 我正在做
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = @"CellIdentifier";
NSLog(@"Creating Cell");
FADynamicCell *cell= (FADynamicCell *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
{
cell = [[[NSBundle mainBundle]loadNibNamed:NSStringFromClass([FADynamicCell class])
owner:nil
options:nil] lastObject];
}
switchButton = [UIButton buttonWithType:UIButtonTypeCustom];
switchButton.tag = indexPath.row;
// switchButton.titleLabel.tag = indexPath.row;
NSLog(@"Swithch Button Tag = %ld",(long)switchButton.tag );
switchButton.frame = cell.addToPFButton.frame;
switchButton.backgroundColor = [UIColor colorWithRed:102./255 green:204./255 blue: 255./255 alpha:1];
switchButton.titleLabel.numberOfLines = 2;
switchButton.titleLabel.font = [UIFont systemFontOfSize:12];
switchButton.titleLabel.textAlignment = NSTextAlignmentCenter;
[switchButton setTitle:@"Remove From Portfolio" forState:UIControlStateNormal];
[switchButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[switchButton addTarget:self action:@selector(addingToPortfolio:) forControlEvents:UIControlEventTouchUpInside];
[cell addSubview:switchButton];
return cell;
}
并在 Function addedToPortfolio
-(void) addingToPortfolio:(id) sender
{
NSLog(@"In FADymanicCellTable");
foundInPortfolio = [TOperations foundInPortfolio:selectedSymbol];
tempButton = (UIButton*)[self.view viewWithTag:self.selectedPath.row];
NSLog(@"Self selected path row = %ld", (long)self.selectedPath.row );
NSLog(@"Button tag = %d", tempButton.tag);
if (foundInPortfolio)
{
NSLog(@"Removing From Portfolio");
[TOperations deleteFromPortfolio:selectedSymbol];
tempButton.titleLabel.font = [UIFont systemFontOfSize:12];
[tempButton setTitle:@"Add To Portfolio" forState:UIControlStateNormal];
}
else
{
NSLog(@"Adding to Portfolio");
[TOperations addToPortfolio:selectedSymbol];
tempButton.titleLabel.font = [UIFont systemFontOfSize:10];
[tempButton setTitle:@"Remove From Portfolio" forState:UIControlStateNormal];
}
}
它适用于所有自定义单元格,除了一个条件,每当我单击第一个单元格上的按钮时,它就会崩溃并显示错误
-[UIView titleLabel]: unrecognized selector sent to instance 0x86e4850
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView titleLabel]: unrecognized selector sent to instance 0x86e4850'
任何帮助将不胜感激...