How to create a horizontal transparent scroll bar?

I am trying to create something like this (look at the time), you can basically slide it horizontally.

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Can anyone give me any suggestions on how to do this in iOS?

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You'd use UIScrollView which you can constrain to just horizontal movement. The Scrolling demo may help to get you started.

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It is pretty easy:

1. create a scrollview with frame of (xOrigin,yOrigin,SCREEN WIDTH,Height).
2. set the content size to (CONTENT WIDTH, Height).
3. setShowsHorizontolScrollIndicator to no to hide the scroll indicator.

Note: Width of the contentSize property should be greater than the frame width to make it horizontally scrollable.