iphone - How to toggle between UITextView's inputviews -

I'm having trouble making my application compatible with iPhone 4.0

My problem is this kind of is.

When I click on Uitextview, a custom keyboard is showing

  UIView * test = [[UIView alloc] initWithFrame: CGRectMake (0, 160, 320, 215)]; UIExtendedKeyBoard * objKeyBoard = [[UIExtendedKeyBoard alloc] initWithFrame: [test limit]]; ObjKeyBoard.tag = 1001; [Ed sbueview: ozcabord]; [ObjKeyBoard release]; [VTxtPoem set Inputview Test]; [Test release];  

But when I click on the special button, I have to toggle between the default key board and my custom key board .... I am using the following code to do this I

  [vTxtPoem setInputView: zero];  

but it does not work ... even if it is not showing the default keyboard. It is still the same custom keyboard control also coming in this line .

My first guess would be something like this:

  [vTxtPoem resignation first Responder]; [VTxtPoem setInputView: zero]; [VTxtPoem Be First Responder];