我在显示UITableView时出现问题：某些单元格为空,单元格中的内容仅在滚动后才会显示(如果空单元格滚出屏幕然后返回).我无法理解可能是什么问题.
这是我的代码：
- (void)viewDidLoad
{
[super viewDidLoad];
[self updateFilesList];
[tableView reloadData];
}
- (void) viewDidAppear:(BOOL)animated
{
animated = YES;
[self updateFilesList];
[self.tableView reloadData];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
[self.filesList retain];
NSString *title = [self.filesList objectAtIndex:indexPath.row];
title = [title stringByDeletingPathExtension];
title = [title lastPathComponent];
if (title.length >33) {
title = [title substringFromIndex:33];
}
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
[cell.imageView setImage:[UIImage imageNamed:@"oie_png-1.png"]];
cell.textLabel.text = title;
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
return cell;
}
提前感谢您的建议！
解决方法
好吧,您有在创建单元格之前发生的单元格自定义代码.
像这样改变它：
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
[self.filesList retain];
NSString *title = [self.filesList objectAtIndex:indexPath.row];
title = [title stringByDeletingPathExtension];
title = [title lastPathComponent];
if (title.length >33) {
title = [title substringFromIndex:33];
}
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
// This part creates the cell for the firs time
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
// This part customizes the cells
[cell.imageView setImage:[UIImage imageNamed:@"oie_png-1.png"]];
cell.textLabel.text = title;
return cell;
}