iphone - UITextView in a UITableViewCell smooth auto-resize

Question

I have a UITextView in a UITableViewCell contentview and allow the cell to autoresize so that the entered text is fully shown - what I am trying to accomplish is an autoresizing cell like the native iOS4 Contacts app has, when you enter "notes" for contact - i.e. when the contentSize of the textView changes - I call reloadRowsAtIndexPaths and in the delegate's heightForRowAtIndexPath I provide the new height for row - this does the job, however it is not nice and smooth like the contact's app - I am almost sure Apple uses some undocumented trick in that app to make the cell's contentView expand smooth and animated without calling reloadRowsAtIndexPaths. My question is how would you suggest to implement such functionality? I hope I didn't miss any details in explanation.

Answer 1

Try this code below, it will be help. You don't have to use any reload functions like reloadRowsAtIndexPaths.

// textview delegate

- (void)textViewDidChange:(UITextView *)textView {
    if (contentView.contentSize.height > contentRowHeight) {

    contentRowHeight = contentView.contentSize.height;

    [theTableView beginUpdates];
    [theTableView endUpdates];

    [contentView setFrame:CGRectMake(0, 0, 300.0, contentView.contentSize.height)];
    }
}

// tableview delegate

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    CGFloat height;

    if (indexPath.row == 0)
        height = kTitleRowHeight;
    else 
        height = contentRowHeight;

    return height;
}