SimpleAdTest can have some problems:

• NoClassDefFoundError on instantiating AdView^

  • Properties -> Java Build Path -> "Order and Export"
  • google-play-services must be upper then "src" and "gen" and it must be checked

• adView.loadAd() is crashing my entire program.

  • it must be present res -> values -> vesion.xml and add <integer name="google_play_services_version">4242000</integer>