带文本字段的UiTableView - 键盘出现时滚动

时间:2013-07-18 05:26:30

标签: ios objective-c uitableview

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 ;

}

4 个答案:

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

将滚动位置设置为顶部

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:

  1. 将UITextField作为自定义UITableViewCell的公共属性。
  2. 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];
    
  3. 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)

您使用TKKeyboardAvoidingTableview,因此无需手动滚动tableview,它会在光标点击时自动滚动

在select tableview中设置xib并像这样设置自定义类

enter image description here

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];
相关问题