我有一个 TableViewController，它使用分组样式并有两 (2) 个部分。第一部分有 4 行，第二部分有 3 行。我在每个单元格中放置了一个 UILabel 和一个 UITextField，并有一个自定义方法(textFieldDone:) 来在按下返回键时处理光标移动到下一个文本字段。
如果只有一个部分，那么效果很好，但我有两个:(是的，我需要两个:)
所以我开始编写一个答案，但得到的结果不起作用，我在调试过程中确实注意到单元标识符(我使用两个)只显示一个(在调试控制台中)，它是仅第一个(通用单元)。
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
switch (indexPath.section)
{
case AUTO_DETAILS:
{
static NSString *cellID = @"GenericCell";
cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue2
reuseIdentifier:cellID] autorelease];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 75, 25)];
label.tag = kLabelTag;
label.font = [UIFont boldSystemFontOfSize:14];
label.textAlignment = UITextAlignmentRight;
[cell.contentView addSubview:label];
[label release];
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(90, 12, 200, 25)];
textField.clearsOnBeginEditing = NO;
[textField setDelegate:self];
[textField addTarget:self action:@selector(topTextFieldDone:) forControlEvents:UIControlEventEditingDidEndOnExit];
[cell.contentView addSubview:textField];
}
NSInteger row = [indexPath row];
UILabel *label = (UILabel *)[cell viewWithTag:kLabelTag];
UITextField *textField = nil;
for (UIView *oneView in cell.contentView.subviews)
{
if ([oneView isMemberOfClass:[UITextField class]])
textField = (UITextField *)oneView;
}
label.text = [topCellLabels objectAtIndex:row];
NSNumber *rowAsNum = [[NSNumber alloc] initWithInt:row];
switch (row)
{
case kMakeRowIndex:
if ([[tempValues allKeys] containsObject:rowAsNum])
textField.text = [tempValues objectForKey:rowAsNum];
else
textField.text = automobile.make;
break;
case kModelRowIndex:
if ([[tempValues allKeys] containsObject:rowAsNum])
textField.text = [tempValues objectForKey:rowAsNum];
else
textField.text = automobile.model;
break;
case kYearRowIndex:
if ([[tempValues allKeys] containsObject:rowAsNum])
textField.text = [tempValues objectForKey:rowAsNum];
else
textField.text = automobile.year;
break;
case kNotesRowIndex:
if ([[tempValues allKeys] containsObject:rowAsNum])
textField.text = [tempValues objectForKey:rowAsNum];
else
textField.text = automobile.notes;
break;
default:
break;
}
if (textFieldBeingEdited == textField)
{
textFieldBeingEdited = nil;
}
textField.tag = row;
[rowAsNum release];
break;
}
case AUTO_REGISTRATION:
{
static NSString *AutoEditCellID = @"AutoEditCellID";
cell = [tableView dequeueReusableCellWithIdentifier:AutoEditCellID];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue2
reuseIdentifier:AutoEditCellID] autorelease];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 75, 25)];
label.tag = kLabelTag;
label.font = [UIFont boldSystemFontOfSize:14];
label.textAlignment = UITextAlignmentRight;
[cell.contentView addSubview:label];
[label release];
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(90, 12, 200, 25)];
textField.clearsOnBeginEditing = NO;
[textField setDelegate:self];
[textField addTarget:self action:@selector(bottomTextFieldDone:) forControlEvents:UIControlEventEditingDidEndOnExit];
[cell.contentView addSubview:textField];
}
NSInteger row = [indexPath row];
UILabel *label = (UILabel *)[cell viewWithTag:kLabelTag];
UITextField *textField = nil;
for (UIView *oneView in cell.contentView.subviews)
{
if ([oneView isMemberOfClass:[UITextField class]])
textField = (UITextField *)oneView;
}
label.text = [bottomCellLabels objectAtIndex:row];
NSNumber *rowAsNum = [[NSNumber alloc] initWithInt:row];
switch (row)
{
case 0:
if ([[tempValues allKeys] containsObject:rowAsNum])
textField.text = [tempValues objectForKey:rowAsNum];
else
textField.text = automobile.vinNumber;
break;
case 1:
if ([[tempValues allKeys] containsObject:rowAsNum])
textField.text = [tempValues objectForKey:rowAsNum];
else
textField.text = automobile.policyNumber;
break;
case 2:
if ([[tempValues allKeys] containsObject:rowAsNum])
textField.text = [tempValues objectForKey:rowAsNum];
else
textField.text = automobile.licensePlate;
break;
default:
break;
}
if (textFieldBeingEdited == textField)
{
textFieldBeingEdited = nil;
}
textField.tag = row;
[rowAsNum release];
break;
}
default:
break;
}
return cell;
}
现在请记住，第一部分工作正常，该方法的代码如下:
-(IBAction)topTextFieldDone:(id)sender
{
UITableViewCell *cell = (UITableViewCell *)[[sender superview] superview];
UITableView *table = (UITableView *)[cell superview];
NSIndexPath *textFieldIndexPath = [table indexPathForCell:cell];
NSUInteger row = [textFieldIndexPath row];
row++;
if (row > kNumOfEditableRows)
row = 0;
NSUInteger newIndex[] = {0, row};
NSIndexPath *newPath = [[NSIndexPath alloc] initWithIndexes:newIndex length:2];
UITableViewCell *nextCell = [self.tableView cellForRowAtIndexPath:newPath];
UITextField *nextField = nil;
for (UIView *oneView in nextCell.contentView.subviews)
{
if ([oneView isMemberOfClass:[UITextField class]])
nextField = (UITextField *)oneView;
}
[nextField becomeFirstResponder];
}
我的想法是创建第二个方法(secondSectionTextFieldDone:)，如下所示
-(IBAction)bottomTextFieldDone:(id)sender
{
UITableViewCell *cell = (UITableViewCell *)[[sender superview] superview];
UITableView *table = (UITableView *)[cell superview];
NSIndexPath *textFieldIndexPath = [table indexPathForCell:cell];
NSUInteger row = [textFieldIndexPath row];
row++;
if (row > 3)
row = 0;
NSUInteger newIndex[] = {0, row};
NSIndexPath *newPath = [[NSIndexPath alloc] initWithIndexes:newIndex length:2];
UITableViewCell *nextCell = [self.tableView cellForRowAtIndexPath:newPath];
UITextField *nextField = nil;
NSString *string = [NSString stringWithFormat:@"AutoEditCellID"];
for (UIView *oneView in nextCell.contentView.subviews)
{
NSLog(@"%@", nextCell.reuseIdentifier); /* DEBUG LOG */
if ([oneView isMemberOfClass:[UITextField class]] && (nextCell.reuseIdentifier == string))
nextField = (UITextField *)oneView;
}
[nextField becomeFirstResponder];
}
但结果并没有解决问题。
所以我的问题是，如何让光标跳转到它所在部分中的下一个文本字段，如果有，如果没有，则发送一条消息“resignFirstResponder”，以便键盘进入离开。
最佳答案
实现 UITextFieldDelegate
yourFirstTextFeld.delegate = self;
yourSecondTextFeld.delegate=self;
实现这个方法
- (BOOL)textFieldShouldReturn:(UITextField *)theTextField {
if(theTextField==yourFirstTextFeld){
[yourSecondTextFeld becomeFirstResponder];
}
return YES;
}
关于iPhone 键盘返回键会将光标移动到下一个文本字段，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/2586467/