.replace(R.id.container, new User()).commit();/The method replace(int, Fragment) in the type FragmentTransaction is not app

提示错误：The method replace(int, Fragment) in the type FragmentTransaction is not applicable for the arguments (int, MyFragment)

 getFragmentManager().beginTransaction()
                 .replace(R.id.container, new User()).commit();

Fragment Activity导入的库不一样，导入一样的即可。

看图：http://www.cnblogs.com/xiaobo-Linux qq463431476

都导入 android.app Fragment;

V4的是兼容低版本的，目前4.4---5.0以上不需要；

http://www.cnblogs.com/xiaobo-Linux