I am working in iPhone messaging based app.
I want to show keyboard with keyboard inputAccessoryView in keyboard without using UITextView and
See the documentation for doing that here:
Simple Text Input
All you need to do is have your view implement UIKeyInput and call [inputView becomeFirstResponder] when the view is touched. Your view also needs to implement canBecomeFirstResponder and return YES.
Sample code from the iOS documentation which does this.