481_make sure class name exists错误

make sure class name exists错误




make sure class name exists, is public, and has an empty constructor that is public
一般这种情况就是建了一个类(Fragment,Activity等)
然后有一个带参数的构造函数,比如
public MyFragment(int tag){
}


这样的话要新增一个无参构造函数


public MyFragment(){
}