如何获取iPhone视图的当前方向或设备的最后方向？

Question

In my app an image appears when user shakes the device. There are different images for landscape and portrait mode. If the iPhone's orientation is portrait or landscape , it works fine. But if it is UIDeviceOrientationFaceDown or UIDeviceOrientationFaceUp , the image should depend on the last orientation used, because the view is still displayed for this orientation.

How can I get the last orientation of the device?

Answer 1

I've figured it out! I had to check the status bar's orientation!

[UIApplication sharedApplication].statusBarOrientation

Answer 2

Well in the shouldAutoRotate method of a class it passes in a parameter called interfaceOrientation. This method is called anytime the device orientation changes. You can store this as a variable and the look at it at a later time to determine the last orientation.

 1 = standard portrait
 2 = upsidedown
 3 = button right landscape
 4 = button left landscape. 

Also the call of self.interfaceOrientation will give you the current device orientation.

Hope this at least get you started in the correct direction.