iOS - Showing airplay button for my game app

Question

I'm creating iPhone app for kids which they can play with alphabets and numbers.
I want to providing the option for airplay so that playing on bigger screen will be more fun.

I'm using the following code to show the airplay button:

MPVolumeView *volumeView = [[MPVolumeView alloc] initWithFrame:CGRectMake(0, 0, 105, 40)];
[bottomPanel addSubview:volumeView];

I'm able to see the volume view, but not the airplay button. Can some one help me how to show the airplay button for my app?

Answer 1

Your code fragment should show the AirPlay button, if run on a device, and with AirPlay devices on your local network.

It worked for me, in an otherwise empty test application. When I switched Wi-Fi off (and therefore there were no AirPlay devices), the button disappeared.

As for interacting with external screens, have a look at the UIScreen class, and the AirPlay and External Displays in iOS apps session from the 2011 WWDC. However, as @Till mentions, your users may have to enable screen mirroring from the UI in the multi-tasking bar.