iMedia share is a nice little app for your Android phone or tablet that lets you use the Apple AirPlay to stream content from your Android device to your Apple TV. (The also have an IOS version but I have not tested it yet.) We have deployed Apple TV's in a big way within our school district for one major reason. The ability to mirror the iPad (Or other IOS devices) to the Apple TV's hooked up to ceiling mounted projectors. This solution turns the iPad into a valuable device for educators. Now with the iMedia share on the Android devices, you can do some similar things. I am rating this as a 4 star app, for the simple reason it does not totally mirror the device, but does mirror many streaming contents. This function is similar to using Airplay to stream a YouTube video from the iPad.
In my tests this app works great for streaming a lot of different video sources right to your Apple TV. The app may be worth downloading even if you do not have an Apple TV, for the simple fact that it arranges a lot of great video sources into one nice app interface. They have a lite version (Which is what I tested) and a paid version for $4.99 that adds even more features. (The lite version has ads.)
This app is definitely worth downloading if you have an Android device! (I would guess that is true for their IOS app as well.) I would give a full 5 out of 5 stars if it did true mirroring of the entire device, which would be invaluable for the Android devices. Thanks to my friend Joe Gehr (@joegehr ) for turning me onto this app. The man is a phone and gadget freak and wealth of information!
There are some similar apps, AppleTV AirPlay Media Player, but it does require you to create an online account. It streams media similar to the iMedia share app, but does not offer true "mirroring" of the entire device.