display popover when user click into text field?

Question

Hi i have been following a book a how to display the popover when the user clicks on a toolbar button item. It works fine but I want to display the popover when user clicks into a textField. It seems like it would be some minor adjustment. Like changing the IBAction "showPopover" method a bit. This is what the code looks like for that method:

- (IBAction)showPopover:(id)sender{

    if(popoverController == nil){   //make sure popover isn't displayed more than once in the view
        popoverController = [[UIPopoverController alloc]initWithContentViewController:popoverDetailContent]; 

    [popoverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    popoverController.delegate = self;
    }
}

There is a another instance method other than "presentPopoverFromBarItem" that is called "presentPopoverFromRect".Would I use that instead? I tried to write the code for it but I'm not sure how to relate it to my TextField or how draw the rectangle needed.Can anyone help me with this?Thanks.

Answer 1

you have to use the textfields delegate method textViewShouldBeginEditing:

Something like this:

- (BOOL)textViewShouldBeginEditing:(UITextView *)textView {
    if(popoverController == nil){   //make sure popover isn't displayed more than once in the view
        popoverController = [[UIPopoverController alloc]initWithContentViewController:popoverDetailContent]; 
    }
    [popoverController presentPopoverFromRect:textView.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    popoverController.delegate = self;
    return NO; // tells the textfield not to start its own editing process (ie show the keyboard)
}