Is there a function that triggers UIImagePickerController to take a photo?

I would like to trigger the camera with a non-standard button.

What function do I call to tri开发者_如何学编程gger the camera?

---

When you use the Overlay view property of the UIImagePickerController to specify your own view, you can use the -takePicture method to trigger the camera to take a picture here is a reference, hope it helps