Android官方的例子下载。必须才能下到，所以这里做个备份，方便大家。DisplayingGraphicswithOpenGLESTheexamplecodeinthisclassusestheOpenGLES2.0APIs,whichistherecommendedAPIversiontousewithcurrentAndroiddevices.FormoreinformationaboutversionsofOpenGLES,seetheOpenGLdeveloperguide.原来的下载地址+GUIDEhttp://developer.android.com