Keyboard avoiding tableview with textviews

Question

I have a table view with text views in each cell. How can I scroll the tableview so that the text being entered into a cell's textview is always visible? This is different from a tableview with textfields, because a textfield does not change it's height, while textview does, if a new line is entered.

Thanks!

score 0 · Answer 1 · answered Sep 26 '16 at 05:02

0

The UITextView changes its height each time return is pressed. Detect when return is pressed and scroll the UITableView slightly upwards.

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {

    if([text isEqualToString:@"\n"]) {

        CGPoint currentOffset=myTableView.contentOffset;
        currentOffset.y-=10;
        [myTableview setContentOffset:currentOffset];

    }

    return YES;
}

answered Sep 26 '16 at 05:02

Kamil

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But what if the user does not press return? Text is simply wrapped on to the next line – Balázs Vincze Sep 26 '16 at 06:07
@BalázsVincze Check this out http://stackoverflow.com/questions/20008713/detect-moment-when-newline-starts-in-uitextview – Kamil Sep 26 '16 at 06:33

score 0 · Answer 2 · answered Sep 26 '16 at 06:01

Declare new variable UITextView *activeTextView;
In ViewDidLoad method, register the keyboard notification while show/hide.
```
[self keyboardNotifications];
```
Add the following method. - (void)keyboardNotifications { // Register notification when the keyboard will be show [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
```
    // Register notification when the keyboard will be hide
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillHide:)
                                                 name:UIKeyboardWillHideNotification
                                               object:nil];
}
```

Set UITextview tag using indexpath in cellForRowAtIndexPath.

 #pragma mark - Keyboard handling
-(void) keyboardWillShow:(NSNotification *)note {
    if(activeTextView)
        if ([TableCell count] < activeTextView.tag) { // It is validate table cell count and activeTextView.tag
            NSDictionary* info = [note userInfo];
            CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

            UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
            tableV.contentInset = contentInsets;
            tableV.scrollIndicatorInsets = contentInsets;
            [tableV scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:activeTextView.tag inSection:0] atScrollPosition:UITableViewScrollPositionBottom animated:YES];
        }
    }

}

-(void) keyboardWillHide:(NSNotification *)note {
    [UIView animateWithDuration:.3 animations:^(void) {
         tableV.contentInset = UIEdgeInsetsZero;
         tableV.scrollIndicatorInsets = UIEdgeInsetsZero;
     }];
}

UITextView delegate set as activeTextView with current UITextView.

#pragma mark - UITextViewDelegate ::

- (BOOL)textViewShouldBeginEditing:(UITextView *)textView
{
    return YES;
}

- (BOOL)textViewShouldEndEditing:(UITextView *)textView
{
    return YES;
}

// To be link with your TextView event "Editing Did Begin"
//  memoryze the current TextView
- (void)textViewDidBeginEditing:(UITextView *)textView
{
    activeTextView = textView;
    [textView becomeFirstResponder];
}

// To be link with your TextView event "Editing Did End"
//  release current TextView
- (void)textViewDidEndEditing:(UITextView *)textView
{
    activeTextView = nil;
    [textView resignFirstResponder];
}

Keyboard avoiding tableview with textviews

2 Answers2