如何访问tableview单元格中的 subview ？ 在“sliderValueChange”方法中，我需要访问单元格中的标签。
这是我的代码:
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.textLabel.font = [UIFont boldSystemFontOfSize:15];
}
cell.textLabel.text = @"Soglia";
UISlider *slider = [[[UISlider alloc] initWithFrame:CGRectMake(174,12,168,23)] autorelease];
slider.maximumValue = 70;
slider.minimumValue = 5;
[cell addSubview:slider];
cell.accessoryView = slider;
[slider addTarget:self action:@selector(sliderValueChange:) forControlEvents:UIControlEventValueChanged];
[slider release];
UILabel *labelVal = [[UILabel alloc] initWithFrame:CGRectMake(218, 40, 30, 23)];
labelVal.text = @"0";
[cell addSubview:labelVal];
return cell;
}
- (void)sliderValueChange:(id)sender {
UISlider *theSlider = (UISlider *)sender;
UITableViewCell *cell = (UITableViewCell *)theSlider.superview;
UITableView *tableView = (UITableView *)cell.superview;
//here I need to access to labelVal...
}
最佳答案
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.textLabel.font = [UIFont boldSystemFontOfSize:15];
//slider
UISlider *slider = [[[UISlider alloc] initWithFrame:CGRectMake(174,12,168,23)] autorelease];
slider.maximumValue = 70;
slider.minimumValue = 5;
slider.tag=11;
[slider addTarget:self action:@selector(sliderValueChange:) forControlEvents:UIControlEventValueChanged];
[cell.contentView addSubview:slider];
//label
UILabel *labelVal = [[UILabel alloc] initWithFrame:CGRectMake(218, 40, 30, 23)];
labelVal.text = @"0";
labelVal.tag=22;
[cell.contentView addSubview:labelVal];
// cell.accessoryView = slider;
}
cell.textLabel.text = @"Soglia";
return cell;
}
- (void)sliderValueChange:(id)sender {
UISlider *theSlider = (UISlider *)sender;
UIView *cell = (UIView *)theSlider.superview;
UILabel *label=(UILabel*)[cell viewWithTag:22];
NSLog(@"label value is : %@ \n\n",label.text);
}
关于objective-c - 如何访问tableview单元格中的 subview ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6859865/