iOS How can I show a PcikerView with indicator?

[mikezang]

I want to show a PickerView with a indicator like in picture, this is copied from my iPad, please give me some siggestion.

 

[dejo]

UIPopoverController, UITableView, UIPickerView.

 

[mikezang]

UIPopoverController, UITableView, UIPickerView.

How to show that above triangle?

 

[dejo]

How to show that above triangle?

Oh, sorry. By "indicator" you meant "triangle". I guess I wasn't able to derive that from the first post.

Anyways, UIPopoverController has two instance methods to present the popover: one doesn't apply in your case (no related bar) and the other can, if handled properly.

 

[mikezang]

Oh, sorry. By "indicator" you meant "triangle". I guess I wasn't able to derive that from the first post.

Anyways, UIPopoverController has two instance methods to present the popover: one doesn't apply in your case (no related bar) and the other can, if handled properly.

Is popover lighter than alert or action sheet? I mean which is faster to be shown?

 

[dejo]

Is popover lighter than alert or action sheet? I mean which is faster to be shown?

Popovers are probably "heavier", depending on the complexity of the enclosed view and how much UI-blocking processing might be going on before it's rendered. But normally I would think the difference is insignificant.

P.S. I had a feeling this would veer into a performance concern.