How do I give a UITextView focus programmatically?

Swift:

textView.becomeFirstResponder()

Since UITextView inherits from UIResponder (indirectly, it actually inherits from UIScrollView, which inherits from UIView which then inherits from UIResponder) you can call the -becomeFirstResponder method on your text field, which will cause it to become the first responder and begin editing:

[textView becomeFirstResponder];