問題描述
UITableViewCell 未在其中顯示 UILabel (UITableViewCell not showing UILabel within)
I have this code and it gives the result of the screenshot below. It's in the tableView:cellForRowAtIndexPath: method. I don't know why the text above the bars isn't showing. Does anyone have any ideas? Thank you.
cell.textLabel.text = @"";
cell.accessoryType = UITableViewCellAccessoryNone;
cell.textAlignment = UITextAlignmentLeft;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
UILabel * label = [[UILabel alloc] initWithFrame: cell.textLabel.frame];
label.backgroundColor = [UIColor clearColor];
label.text = [NSString stringWithFormat:@"%.1f%% (%i)",([[options_votes objectAtIndex: [indexPath row]] intValue] * 100.0 / total_votes),[[options_votes objectAtIndex: [indexPath row]] intValue]];
NSLog(@"%@",[NSString stringWithFormat:@"%.1f%% (%i)",([[options_votes objectAtIndex: [indexPath row]] intValue] * 100.0 / total_votes),[[options_votes objectAtIndex: [indexPath row]] intValue]]);
label.textAlignment = UITextAlignmentRight;
[cell.contentView addSubview:label];
[label release];
label = [[UILabel alloc] initWithFrame: cell.textLabel.frame];
label.backgroundColor = [UIColor clearColor];
label.text = [options objectAtIndex:[indexPath row]];
NSLog(@"%@",[options objectAtIndex:[indexPath row]]);
label.textAlignment = UITextAlignmentLeft;
[cell.contentView addSubview:label];
[label release];
UIImageView * image_view = [[UIImageView alloc] initWithImage:nav_delegate‑>back_bar];
image_view.frame = CGRectMake(10, 44, 280, 10);
[cell.contentView addSubview:image_view];
[image_view release];
image_view = [[UIImageView alloc] initWithImage:nav_delegate‑>blue_bar];
image_view.frame = CGRectMake(10, 44, 5 + [[options_votes objectAtIndex: [indexPath row]] intValue] * 275.0/total_votes, 10);
[cell.contentView addSubview:image_view];
[image_view release];
‑‑‑‑‑
參考解法
方法 1:
Just a stab in the dark, but because you did cell.textLabel.text = @"";, it might have shrank the frame of the textLabel there to a width of 0. Try creating your labels based off of a frame that you know to be of a correct visible size.
方法 2:
To show your 2 labels, you can use this code:
cell.accessoryType = UITableViewCellAccessoryNone;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
if (indexPath.row == 0) {
UILabel label1 = [[UILabel alloc] initWithFrame:CGRectMake(11, 10, 280, 25)];
label1.backgroundColor = [UIColor clearColor];
label1.text = @"Your Text Here";
label1.textAlignment = UITextAlignmentRight;
[cell.contentView addSubview:label1];
[label1 release];
}
if (indexPath.row == 1) {
UILabel label2 = [[UILabel alloc] initWithFrame:CGRectMake(11, 10, 280, 25)];
label2.backgroundColor = [UIColor clearColor];
label2.text = @"Your Text Here";
label2.textAlignment = UITextAlignmentLeft;
[cell.contentView addSubview:label2];
[label2 release];
}
if (indexPath.row == 2) {
// Put your imageView code here.
}</code></pre>
Note: if you are using a tableViewCell taller than defaults size, 44.0, you can change the 25 number in the initWithFrame method of the labels.
Hope this can help you :)
(by Matthew Mitchell、David Liu、matteodv)
參考文件