1.MapView ,MapActivity 这种的局限在于，必须要继承MapActivity，否则无法使用MapView。纠结就在于此。但是，最新官网上已经弃用了这糟粕的MapActivity。 Version 1 of the Google Maps Android API as been officially deprecated as of December 3rd, 2012. This means that from March 3rd, 2013 you will no longe
