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问题:
I want to display a label showing a number in each cell of the tableview but the label is only visible when I click on a row (when the cell is highlited)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UILabel *label; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; label = [[UILabel alloc] initWithFrame:CGRectMake(200,10, 15, 15)]; label.tag = 1; [cell.contentView addSubview:label]; [label release]; } else { label = (UILabel *)[cell viewWithTag:1]; } if (indexPath.row == 0) { cell.textLabel.text = @"Photos"; label.text = [NSString stringWithFormat:@"%d",1]; } return cell; }
回答1:
I had the same problem and it was solved by setting the text for textlabel BEFORE adding the custom label as a subview.
... cell.textLabel.text = @"X"; ... [cell.contentView addSubview:label]
回答2:
When you update the textLabel property of a UITableViewCell, it lazily creates a UILabel and adds it to the cell's subviews. Usually you wouldn't use a combination of textLabel and adding subviews to contentView, but if you do you need to make sure the textLabel view isn't placed over the top of your contentView subviews.
回答3:
First, I assume this is targeting 3.0. Apple has changed how UITableViewCells are created in 3.0, and you should move over to that. -initWithFrame:reuseIdentifier: is deprecated.
That said, a likely problem is that the built-in textLabel is interfering with your added label, perhaps overlapping. You should look first at whether one of the new built-in styles meets your needs directly. If not I would recommend either just using your own views or only using the built-in views, possibly rearranging them. If you want to rearrange them, Apple suggests subclassing the cell and overloading -layoutSubviews. I also believe that -tableView:willDisplayCell:forRowAtIndexPath: is a good place to do final cell layout without subclassing.
回答4:
Using a custom UITableViewCell gives you more control over the layout of a cell. Add custom views to the cell's contentView in the subclass and override the layoutSubviews to set the order of the subviews:
- (void)layoutSubviews { [super layoutSubviews]; [self.contentView bringSubviewToFront:self.yourCustomView]; }
