UI picker Trying to do it the right way

I am trying to use a UI picker like a combo box in C#. User clicks on a TextField, I have set the inputView to be the picker. This works fine. User clicks on the row and I get the item on that row and place it in the textfield.

However, when the application loads, this picker is visible! I don't want it to be visible. I want to be able to make it visible when the user clicks on the textbox and then when he or she moved off I want to hide it. How do you do this?

Also , is it possible to have the picker only if the user wants to do a lookup like CTRL click. Otherwise, it uses the keyboard? How do you toggle back and开发者_如何学C forth between the keyboard and the picker.

For example suppose user wants to add a new book. He/she clicks on the authors textfield and he/she either types the author ( a new author that does not exist in the database) or select and existing author from the list.

Thanks

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The best way to do this is using the inputView property of the textField. You can just set that to the picker and it should handle the rest for you.