avoid view when opening keyboard from a UITextView inside a UITableView with custom cell

Question

I have a UIViewController that contains a UITableView with custom cells, inside the cell are UILabels, a couple of uneditable UI

Answer 1

I've always used a two fold solution for this.

1. Resize table so it now fits in the smaller area.
2. Scroll to the cell we want visible. (we needed to re-size the table for this or you'd still wind up being unable to get to the last couple of cells in the table.)

To do this, I register keyboard show/hide events and act accordingly when they get called.

- (void)keyboardWillShow:(NSNotification *)note {
    [self updateForKeyboardShowHide:note appearing:YES];
}
- (void)keyboardWillHide:(NSNotification *)note {
    [self updateForKeyboardShowHide:note appearing:NO];
}

- (void)updateForKeyboardShowHide:(NSNotification *)note appearing:(BOOL)isAppearing {
    // ignore notifications if our view isn't attached to the window
    if (self.view.window == nil)
        return;

    CGFloat directionalModifier = isAppearing?-1:1;
    CGRect keyboardBounds = [[note.userInfo valueForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
    CGFloat animationDuration = [[note.userInfo valueForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];

    // figure out table re-size based on keyboard
    CGFloat keyboardHeight;
    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
    if (UIInterfaceOrientationIsPortrait(orientation))
        keyboardHeight = keyboardBounds.size.height;
    else 
        keyboardHeight = keyboardBounds.size.width;

    [UIView animateWithDuration:animationDuration animations:^{
        // resize table
        CGRect newFrame = table.frame;
        newFrame.size.height += [self calculateKeyboardOffsetWithHeight:keyboardHeight] * directionalModifier;
        table.frame = newFrame;        
    }  completion:^(BOOL finished){
        // scroll to selected cell
        if (isAppearing) {
            NSIndexPath *indexPath = [NSIndexPath indexPathForRow:textFieldInEdit.tag inSection:0];
            [table scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:YES];
        }
    }];
}

- (CGFloat)calulateKeyboardOffsetWithHeight:(CGFloat)keyboardHeight {
    // This depends on the size and position of your table.
    //   If your table happen to go all the way to the bottom of
    // the screen, you'll needs to adjust it's size by the whole keyboard height.
    // You might as well ditch this method and inline the value.
    return keyboardHeight;

    //   My table did not go to the bottom of the screen and the position was
    // change dynamically so and there was long boring calculation I needed to
    // do to figure out how much my table needed to shrink/grow.
}