I am working on a chat application similar to whatsapp etc. It has a tableview in view controller and a text field and button in the bottom toolbar. I came across the various question on sliding the view upwards and using this link I managed to slide the view upwards. However I want to dismiss the keyboard and the view comes down and fits the screen .I tried using tap gesture and click on return button but nothing seems to work. How do I do make the view slide down and keyboard disappear?

Moreover how can i change the width of text field so that multiple lines can appear when the user is writing the message?

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