androidx的头文件引用更新

//import android.app.Fragment;
import androidx.fragment.app.Fragment;

//import android.support.v7.app.AppCompatActivity;
import androidx.appcompat.app.AppCompatActivity;

//import android.support.design.widget.TabLayout;
import com.google.android.material.tabs.TabLayout;

//import android.support.v7.widget.LinearLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;

//import android.support.v4.app.ActivityCompat;
import androidx.core.app.ActivityCompat;

//import android.support.v4.content.ContextCompat;
import androidx.core.content.ContextCompat;

//import android.support.v4.app.FragmentManager;
import androidx.fragment.app.FragmentManager;

//import android.support.v4.app.FragmentPagerAdapter;
import androidx.fragment.app.FragmentPagerAdapter;

//import android.support.v4.view.PagerAdapter;
import androidx.viewpager.widget.PagerAdapter;

//import android.support.v4.view.ViewPager;
import androidx.viewpager.widget.ViewPager;

//import android.support.annotation.NonNull;
import androidx.annotation.NonNull;

//import android.support.v7.widget.RecyclerView;
import androidx.recyclerview.widget.RecyclerView;

//import android.support.v7.widget.StaggeredGridLayoutManager;
import androidx.recyclerview.widget.StaggeredGridLayoutManager;