我正在tableview控制器中创建一个带有文本字段的表单。在输入字段值后按下返回键时,我试图在这里实现两件事:
1)将光标移动到下一个字段 2)向上滚动表格视图
我的代码正在将光标移动到下一个字段,但滚动部分不起作用。你能让我知道我在这里失踪了吗?我研究了堆栈溢出的类似问题,并且遵循他们的建议,但仍面临问题。感谢您的意见。
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
if ([textField isEqual:self.firstName]){
//Move cursor to next field
[self.lastName becomeFirstResponder];
//scroll
id cellContainingFirstResponder = textField.superview.superview ;
NSIndexPath *currentRowIndexPath = [self.signUpTable indexPathForCell:cellContainingFirstResponder];
NSIndexPath *nextRowIndexPath = [NSIndexPath indexPathForRow:currentRowIndexPath.row+1 inSection:currentRowIndexPath.section];
[self.signUpTable scrollToRowAtIndexPath:nextRowIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
if ([textField isEqual:self.lastName]){
//Move cursor to next field
[self.emailId becomeFirstResponder];
//scroll
id cellContainingFirstResponder = textField.superview.superview ;
NSIndexPath *currentRowIndexPath = [self.signUpTable indexPathForCell:cellContainingFirstResponder];
NSIndexPath *nextRowIndexPath = [NSIndexPath indexPathForRow:currentRowIndexPath.row+1 inSection:currentRowIndexPath.section];
[self.signUpTable scrollToRowAtIndexPath:nextRowIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
if ([textField isEqual:self.emailId]){
//Move cursor to next field
[self.phoneNumber becomeFirstResponder];
//scroll
id cellContainingFirstResponder = textField.superview.superview ;
NSIndexPath *currentRowIndexPath = [self.signUpTable indexPathForCell:cellContainingFirstResponder];
NSIndexPath *nextRowIndexPath = [NSIndexPath indexPathForRow:currentRowIndexPath.row+1 inSection:currentRowIndexPath.section];
[self.signUpTable scrollToRowAtIndexPath:nextRowIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
if ([textField isEqual:self.phoneNumber]){
//Move cursor to next field
[self.password becomeFirstResponder];
//scroll
id cellContainingFirstResponder = textField.superview.superview ;
NSIndexPath *currentRowIndexPath = [self.signUpTable indexPathForCell:cellContainingFirstResponder];
NSIndexPath *nextRowIndexPath = [NSIndexPath indexPathForRow:currentRowIndexPath.row+1 inSection:currentRowIndexPath.section];
[self.signUpTable scrollToRowAtIndexPath:nextRowIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
// This is the last field hence dismiss keyboard -> This part is working
if ([textField isEqual:self.password]){
[textField resignFirstResponder];
}
return YES ;
}
答案 0 :(得分:6)
根据textfield的焦点滚动tableview,请尝试:
- (void) textFieldDidBeginEditing:(UITextField *)textField {
UITableViewCell *cell = (UITableViewCell*) [[textField superview] superview];
[yourTableView scrollToRowAtIndexPath:[yourTableView indexPathForCell:cell] atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
}
您可以使用UITableViewScrollPositionTop
您可能想知道为什么两个超级视图用于textfield
。一个用于UITableViewCellContentView
,另一个用于UITableViewCell
,以便您可以获取表格当前/聚焦单元格的实例。
它有效,我们在其中一个项目中使用了它
答案 1 :(得分:2)
我使用viewcontroller作为表视图的数据源。我的解决方案:
在cellForRowAtIndexPath中,将目标添加到UIControlEventEditingDidBegin控制事件的文本字段:
[((YourCustomCell *) cell).textfield addTarget:self action:@selector(textFieldDidBeginEditing:) forControlEvents:UIControlEventEditingDidBegin];
实现命名方法:找到文本字段的单元格并滚动到该单元格
- (void)textFieldDidBeginEditing:(UITextField *)textField{
for ( NSIndexPath *ip in [self.tableview indexPathsForVisibleRows] ){
UITableViewCell * cell = [self.tableview cellForRowAtIndexPath:ip];
if ( [cell isKindOfClass:[YourCustomCell class]]){
if ( [textField isEqual:((YourCustomCell *)cell).textfield] ){
[self.tableview selectRowAtIndexPath:ip animated:YES scrollPosition:UITableViewScrollPositionTop];
[self setContinueButtonEnabled:YES];
}
}
}
}
答案 2 :(得分:1)
答案 3 :(得分:1)
尝试使用此代码可能会对您有所帮助
CGPoint pt;
CGRect rc = [textField bounds];
rc = [textField convertRect:rc toView:scrView];
pt = rc.origin;
pt.x = 0;
pt.y =0;
[scrView setContentOffset:pt animated:YES];