iPhone/iPad UI: seeking drop-down control

Question

My universal app has a settings page, wherein the user must choose a theme from a dozen available themes.

Problem is, if I am using a picker-view, it takes up most of the screen on an iPhone.

I think what I want is something like your standard Windows drop-down menu, where it just displays on a single line the current selection, and clicking it expands into a scrollable list of possible items. Selecting an item collapses the list back into the original form.

So my question is: What is my best method for handling this situation? Can anyone point me to pictures or code examples of how this situation is handled successfully?

EDIT: This is the behaviour I'm looking for:

• only the currently selected profile is displayed
• when the user taps on this, it expands into a list
• when the user selects an item (or taps outside of the view) it collapses back to its original form, now displaying the new selection

ie functionally equivalent to a dropdown.

Answer 1

Firstly, this question is a duplicate of:

(not much good) Picker view as subview

(same) How to make an iPhone dropdown-looking button

(better) How to create drop down list box for an iphone app

(even better) Creating a drop-down list in iPhone app

(that last one links to some handy code)

Secondly, Google image search for 'dropdown control iphone' restricting the image size to 320x480 shows how everyone is doing this.

Basically a picker view scrolls in from the bottom, the same way as the keyboard does.