Hello其他程序员，
我真的很想知道问题是什么，但我似乎无法弄清楚问题。我已经对此进行过研究，但不幸的是，对我来说没有任何作用。问题是我有多个单元格，每个单元格都有一个特定的UITextField，我以编程方式在cellForRowAtIndexPath上绘制。问题是，当我在任何文本字段上输入一些信息并向下滚动表格视图时，文本字段上的文本消失得无影无踪。我试图理解为什么细胞再利用（我认为导致问题）导致了这一点。
这是我的cellForRowAtIndexPath代码：
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *simpleTableIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:nil];
}
cellText = [[UILabel alloc] initWithFrame:CGRectMake(15, 10, 260, 20)];
cellText.font = [UIFont boldSystemFontOfSize:11.0];
cellText.textColor = [UIColor grayColor];
[cell.contentView addSubview:cellText];
if (indexPath.section == 0)
{
cellText.text = clientInfoArray[indexPath.row];
if ([[clientInfoArray objectAtIndex:indexPath.row] isEqual:@"Customer Name"])
{
nameTxtField = [[UITextField alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
nameTxtField.placeholder = @"full name";
nameTxtField.font = [UIFont boldSystemFontOfSize:15.0];
nameTxtField.autocorrectionType = UITextAutocorrectionTypeNo;
[nameTxtField setClearButtonMode:UITextFieldViewModeWhileEditing];
[cell addSubview:nameTxtField];
}
if ([[clientInfoArray objectAtIndex:indexPath.row] isEqual:@"Phone"])
{
phoneTxtField = [[UITextField alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
phoneTxtField.placeholder = @"xxx-xxx-xxx";
phoneTxtField.font = [UIFont boldSystemFontOfSize:15.0];
phoneTxtField.autocorrectionType = UITextAutocorrectionTypeNo;
phoneTxtField.keyboardType = UIKeyboardTypePhonePad;
[phoneTxtField setClearButtonMode:UITextFieldViewModeWhileEditing];
[cell addSubview:phoneTxtField];
}
if ([[clientInfoArray objectAtIndex:indexPath.row] isEqual:@"Date"])
{
dateLabel = [[UILabel alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
dateLabel.font = [UIFont boldSystemFontOfSize:15.0];
[cell.contentView addSubview:dateLabel];
dateLabel.text = [dateFormatter stringFromDate:[NSDate date]];
}
}
if (indexPath.section == 1) {
cellText.text = vehicleInfoArray[indexPath.row];
if ([[vehicleInfoArray objectAtIndex:indexPath.row] isEqual:@"Make and Model"])
{
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
modelLabel = [[UILabel alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
modelLabel.font = [UIFont boldSystemFontOfSize:15.0];
[cell.contentView addSubview:modelLabel];
modelLabel.text = makeAndModelData;
}
if ([[vehicleInfoArray objectAtIndex:indexPath.row] isEqual:@"Color"])
{
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
colorLabel = [[UILabel alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
colorLabel.font = [UIFont boldSystemFontOfSize:15.0];
[cell.contentView addSubview:colorLabel];
colorLabel.text = colorData;
}
if ([[vehicleInfoArray objectAtIndex:indexPath.row] isEqual:@"Doors"])
{
doorsTxtField = [[UITextField alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
doorsTxtField.placeholder = @"#";
doorsTxtField.font = [UIFont boldSystemFontOfSize:15.0];
doorsTxtField.autocorrectionType = UITextAutocorrectionTypeNo;
[doorsTxtField setClearButtonMode:UITextFieldViewModeWhileEditing];
doorsTxtField.keyboardType = UIKeyboardTypeNumberPad;
[cell addSubview:doorsTxtField];
}
if ([[vehicleInfoArray objectAtIndex:indexPath.row] isEqual:@"Vehicle VIN"])
{
vinTxtField = [[UITextField alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
vinTxtField.placeholder = @"#";
vinTxtField.font = [UIFont boldSystemFontOfSize:15.0];
vinTxtField.autocorrectionType = UITextAutocorrectionTypeNo;
[vinTxtField setClearButtonMode:UITextFieldViewModeWhileEditing];
vinTxtField.keyboardType = UIKeyboardTypeNumberPad;
[cell addSubview:vinTxtField];
}
if ([[vehicleInfoArray objectAtIndex:indexPath.row] isEqual:@"Fuel"])
{
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
fuelLabel = [[UILabel alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
fuelLabel.font = [UIFont boldSystemFontOfSize:15.0];
[cell.contentView addSubview:fuelLabel];
fuelLabel.text = fuelData;
}
if ([[vehicleInfoArray objectAtIndex:indexPath.row] isEqual:@"Milage"])
{
milageLabel = [[UITextField alloc] initWithFrame:CGRectMake(15, 35, 300, 30)];
milageLabel.placeholder = @"ODO";
milageLabel.font = [UIFont boldSystemFontOfSize:15.0];
milageLabel.autocorrectionType = UITextAutocorrectionTypeNo;
[milageLabel setClearButtonMode:UITextFieldViewModeWhileEditing];
milageLabel.keyboardType = UIKeyboardTypeNumberPad;
[cell addSubview:milageLabel];
}
if ([[vehicleInfoArray objectAtIndex:indexPath.row] isEqual:@"Other description"])
{
otherDTxtView = [[UITextView alloc] initWithFrame:CGRectMake(15, 35, 300, 125)];
otherDTxtView.font = [UIFont boldSystemFontOfSize:15.0];
[cell addSubview:otherDTxtView];
}
}
if (indexPath.section == 2) {
cellText.text = InAndOutInfoArray[indexPath.row];
}
return cell;
}
有关如何解决此问题的任何想法？ +额外积分可获得有用的答案。 ：）
答案 0 :(得分：1)
无论何时使用重用单元技术，都会释放不可见的单元以释放一些内存。
由于您要在cellForRow方法中创建文本字段，因此当单元格不可见时它也将被释放，并在单元格变为可见时重新绘制。
您可以将文本字段值保存在某个数组中（使用textfield的didEndEditing委托），并使用该数组在cellForRow方法内的文本字段创建过程中填充文本。