uisegmentedcontrol - iOS segmented control with a little triangle on top -

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how can draw little triangle above selected item in uisegmentedcontrol? know open-source extends it?
(if not - pointers of how it)

design should (this in bottom of screen) enter image description here

i don't believe there's native way that. can either find library allows it, can easily, recommend.

i can think of few out of box ways approach it, here @ 2 think worth mentioning off bat:

1) use uisegmentedcontrol images. make segmented controller have height includes triangle, , have image selected , normal states shows want. normal states have rectangle of transparency on top, wide entire image , tall triangle. selected image include triangle. both images should end same width , height.

2) subclass uisegmentedcontrol , custom drawing in drawrect:. draw triangle outside (above) bounds of segmented controller, make sure set segmented controller's cliptobounds property no, layer's maskstobounds property.

if you'd more help, or other suggestions, ask.


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