I just push a viewcontroller, the viewcontroller has a containerView, and containerView has a MessageViewController.
The inputBar faded into containerView.

@xiaowinner You probably need to call messageInputBar.becomeFirstResponder()
Thanks锛孖 test add self.becomeFirstResponder() in the viewdidApper function, work out my question.
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Thanks锛孖 test add self.becomeFirstResponder() in the viewdidApper function, work out my question.