android--------解决Entities and POJOs must have a usable public constructor
今天在学习android数据库,运行程序的时候报错,错误是:EntitiesandPOJOsmusthaveausablepublicconstructor.Youcanhaveanemptyconstructororaconstructorwhoseparametersmatchthefields(bynameandtype).Triedthefollowingconstructorsbutth