android 项目升级 androidx - 修改包名（补充）

import androidx.core.app.Fragment;
import androidx.fragment.app.Fragment;

import androidx.core.widget.DrawerLayout;
import androidx.drawerlayout.widget.DrawerLayout;

android.support.design.widget.AppBarLayout
com.google.android.material.appbar.AppBarLayout

android.support.design.widget.CoordinatorLayout
androidx.coordinatorlayout.widget.CoordinatorLayout

android.support.v7.widget.Toolbar
androidx.appcompat.widget.Toolbar

android.support.v4.view.ViewPager
androidx.viewpager.widget.ViewPager

androidx.appcompat.widget.RecyclerView
androidx.recyclerview.widget.RecyclerView

androidx.core.view.ViewPager
androidx.viewpager.widget.ViewPager

import androidx.core.app.FragmentPagerAdapter;
import androidx.fragment.app.FragmentPagerAdapter;

import androidx.core.app.FragmentActivity;
import androidx.fragment.app.FragmentActivity;

import androidx.core.app.FragmentStatePagerAdapter;
import androidx.fragment.app.FragmentStatePagerAdapter;

import android.support.design.widget.Snackbar;
import com.google.android.material.snackbar.Snackbar;

import android.support.multidex.MultiDex;
import androidx.multidex.MultiDex;
import android.support.multidex.MultiDexApplication;
import androidx.multidex.MultiDexApplication;

import androidx.appcompat.util.DiffUtil;
import androidx.recyclerview.widget.DiffUtil;

import androidx.appcompat.widget.SimpleItemAnimator;

import android.support.annotation.

import androidx.appcompat.widget.SnapHelper;
import androidx.recyclerview.widget.SnapHelper;

import androidx.appcompat.widget.LinearSmoothScroller;
import androidx.recyclerview.widget.LinearSmoothScroller;

import androidx.appcompat.widget.OrientationHelper;
import androidx.recyclerview.widget.OrientationHelper;

import androidx.appcompat.widget.LinearSnapHelper;
import androidx.recyclerview.widget.LinearSnapHelper;

import androidx.core.widget.ViewDragHelper;
import androidx.customview.widget.ViewDragHelper;

import androidx.core.util.SparseArrayCompat;
import androidx.collection.SparseArrayCompat;

androidx.cardview.widget.CardView
androidx.appcompat.widget.CardView

android.support.v7.widget.AppCompatCheckBox
androidx.appcompat.widget.AppCompatCheckBox

android.support.v7.widget.RecyclerView
androidx.recyclerview.widget.RecyclerView

import android.arch.lifecycle.LifecycleObserver;
import androidx.lifecycle.LifecycleObserver;

import android.arch.lifecycle.LifecycleObserver;
import androidx.lifecycle.LifecycleObserver;

android.support.v7.widget.LinearLayoutCompat
androidx.appcompat.widget.LinearLayoutCompat

import androidx.core.util.LruCache;
import android.util.LruCache;

import androidx.appcompat.widget.helper.ItemTouchHelper;
import androidx.recyclerview.widget.ItemTouchHelper;

import androidx.appcompat.widget.SimpleItemAnimator;
import androidx.recyclerview.widget.SimpleItemAnimator;

import android.support.design.widget.CollapsingToolbarLayout;
import com.google.android.material.appbar.CollapsingToolbarLayout;

import androidx.core.widget.SwipeRefreshLayout;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

import androidx.appcompat.widget.PagerSnapHelper;
import androidx.recyclerview.widget.PagerSnapHelper;

import android.arch.lifecycle.Observer;
import androidx.lifecycle.Observer;

import android.arch.lifecycle.ViewModelProviders;
import androidx.lifecycle.ViewModelProviders;

import android.arch.lifecycle.ViewModel;
import androidx.lifecycle.ViewModel;

import android.arch.lifecycle.LiveData;
import androidx.lifecycle.LiveData;

import android.arch.lifecycle.MutableLiveData;  
import androidx.lifecycle.MutableLiveData;

androidx.constraintlayout.ConstraintLayout
androidx.constraintlayout.widget.ConstraintLayout

android.support.design.widget.TabLayout
com.google.android.material.tabs.TabLayout

本文地址：https://blog.csdn.net/u013023167/article/details/108586535