A(當電池是新創建):我應該如何添加Subview到cell.contentView?
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
CGRect frame = CGRectMake(0, 0, 160, 50);
UILabel *label = [[UILabel alloc] initWithFrame:frame];
label.textAlignment = UITextAlignmentRight;
label.text = @"9:00am";
[cell.contentView addSubview:label];
[label release];
}
return cell;
}
或B(每次當小區被發現時間):
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
CGRect frame = CGRectMake(0, 0, 160, 50);
UILabel *label = [[UILabel alloc] initWithFrame:frame];
label.textAlignment = UITextAlignmentRight;
label.text = @"9:00am";
[cell.contentView addSubview:label];
[label release];
return cell;
}
A或B?謝謝!
UPDATE解決方案(感謝您的答案):
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UILabel *label;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
CGRect frame = CGRectMake(0, 0, 160, 50);
label = [[UILabel alloc] initWithFrame:frame];
label.textAlignment = UITextAlignmentRight;
label.tag = 1;
[cell.contentView addSubview:label];
[label release];
} else {
label = (UILabel *) [cell viewWithTag:1];
}
label.text = [NSString stringWithFormat:@"%d", [indexPath row]];
return cell;
}
除了性能,確實乙造成內存泄漏? – ohho 2010-08-16 03:52:21
@ohho,不這麼認爲。一切看起來都很好。 – 2010-08-16 03:56:50
難道B不會給細胞添加標籤嗎?我想在一些滾動後,你最終會得到多個單元格在其子視圖中保存多個標籤。如果我錯了,請糾正我。 – Mike 2010-10-09 16:50:14