1.設(shè)置 android.useAndroidX=true 和 android.enableJetifier=true
2.一鍵遷移至androidx：Refactor -> Migrate to Androidx
3.手動(dòng)修改未能自動(dòng)遷移到androidx的部分：

android.support.v4.view.ViewPager.PageTransformer ->?androidx.viewpager.widget.ViewPager.PageTransformer

android.support.annotation.NonNull -> androidx.annotation.NonNull

android.support.annotation.Nullable ->?androidx.annotation.Nullable

android.support.v4.content.ContextCompat ->?androidx.core.content.ContextCompat

android.support.v7.widget.DividerItemDecoration ->?androidx.recyclerview.widget.DividerItemDecoration

android.support.v7.widget.RecyclerView ->?androidx.recyclerview.widget.RecyclerView

android.arch.lifecycle.MutableLiveData ->?androidx.lifecycle.MutableLiveData

android.arch.lifecycle.ViewModel ->?androidx.lifecycle.ViewModel

android.support.v7.widget.LinearLayoutManager ->?androidx.recyclerview.widget.LinearLayoutManager

android.support.constraint.ConstraintLayout ->?androidx.constraintlayout.widget.ConstraintLayout

android.support.constraint.Group ->?androidx.constraintlayout.widget.Group

android.support.v4.widget.NestedScrollView ->?androidx.core.widget.NestedScrollView

android.support.v4.widget.SwipeRefreshLayout ->?androidx.swiperefreshlayout.widget.SwipeRefreshLayout

android.support.constraint.Guideline ->?androidx.constraintlayout.widget.Guideline

android.support.design.widget.CoordinatorLayout ->?androidx.coordinatorlayout.widget.CoordinatorLayout

android.support.design.widget.AppBarLayout ->?com.google.android.material.appbar.AppBarLayout

android.support.design.widget.CollapsingToolbarLayout -> com.google.android.material.appbar.CollapsingToolbarLayout

android.support.v7.widget.Toolbar?->?androidx.appcompat.widget.Toolbar

android.support.v4.view.ViewPager?->?androidx.viewpager.widget.ViewPager

android.support.multidex.MultiDexApplication?->?androidx.multidex.MultiDexApplication

android.support.v4.view.PagerAdapter?->?androidx.viewpager.widget.PagerAdapter

android.support.v7.util.DiffUtil?->?androidx.recyclerview.widget.DiffUtil

android.support.v4.app.Fragment?->?androidx.fragment.app.Fragment

android.support.v4.app.FragmentActivity?->?androidx.fragment.app.FragmentActivity
android.support.annotation.IntDef?->?androidx.annotation.IntDef

android.support.annotation.RequiresApi?->?androidx.annotation.RequiresApi

android.support.v4.app.ActivityCompat?->?androidx.core.app.ActivityCompat

android.support.v4.widget.Space?->?androidx.legacy.widget.Space(為使用space，還需要implementation 'androidx.legacy:legacy-support-v4:1.0.0)

android.support.annotation.ColorRes?->?androidx.annotation.ColorRes

android.support.annotation.StringRes?->?androidx.annotation.StringRes

android.support.v7.widget.GridLayoutManager?->?androidx.recyclerview.widget.GridLayoutManager

android.support.annotation.LayoutRes?->?androidx.annotation.LayoutRes

android.support.v4.util.ArrayMap?->?androidx.collection.ArrayMap

android.support.design.internal.BottomNavigationMenuView?->?com.google.android.material.bottomnavigation.BottomNavigationMenuView

android.support.design.widget.BottomNavigationView?->?com.google.android.material.bottomnavigation.BottomNavigationView

android.support.v7.widget.SimpleItemAnimator?->?androidx.recyclerview.widget.SimpleItemAnimator

android.support.v8.renderscript.?->?androidx.renderscript.

android.support.design.widget.FloatingActionButton?->?com.google.android.material.floatingactionbutton.FloatingActionButton

android.support.v7.widget.PagerSnapHelper?->?androidx.recyclerview.widget.PagerSnapHelper

android.support.v7.widget.AppCompatImageView?->?androidx.appcompat.widget.AppCompatImageView

android.arch.lifecycle.ViewModelProviders ->?androidx.lifecycle.ViewModelProviders

android.arch.lifecycle.Observer ->?androidx.lifecycle.Observer

android.support.v4.app.FragmentManager ->?androidx.fragment.app.FragmentManager

android.support.v4.app.FragmentPagerAdapter ->?androidx.fragment.app.FragmentPagerAdapter

android.support.v7.app.AppCompatActivity ->?androidx.appcompat.app.AppCompatActivity

android.support.transition.Transition ->?androidx.transition.Transition

android.support.v7.app.ActionBar ->?androidx.appcompat.app.ActionBar

android.support.v7.app.AppCompatDelegate ->?androidx.appcompat.app.AppCompatDelegate

4.更新 ButterKnife 和 ShadowLayout 庫到androidx兼容版本

implementation 'com.jakewharton:butterknife:8.8.1' -> implementation 'com.jakewharton:butterknife:10.2.1'

annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1' -> annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.1'?

5.升級(jí)gradle

com.android.tools.build:gradle:3.4.1 ->?com.android.tools.build:gradle:7.1.2

distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip ->?distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-all.zip

6.根目錄的build.gradle文件中的依賴路徑全部改為https的

7.注銷build.gradle文件中的自定義路徑(gradle tool插件7.x版本好像不支持自定義路徑)

variant.outputs.all {
? ? ? ? ? ? // 自定義輸出路徑
? ? ? ? ? ? if (variant.buildType.name == "release") {
? ? ? ? ? ? ? ? variant.getPackageApplication().outputDirectory = new File(project.rootDir.absolutePath + File.separator + "app/build/outputs/apk/release")
? ? ? ? ? ? } else {
? ? ? ? ? ? ? ? variant.getPackageApplication().outputDirectory = new File(project.rootDir.absolutePath + File.separator + "app/build/outputs/apk/debug")
? ? ? ? ? ? }
? ? ? ? }

8.適配webView

mWebSettings.setAppCachePath(appCachePath);

webView.getSettings().setAppCacheEnabled(false); ->?webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);

mWebSettings.setAppCacheEnabled(true) ->?mWebSettings.setCacheMode(WebSettings.LOAD_DEFAULT);

9.適配截屏服務(wù)：

在manifest.xml文件中添加權(quán)限和service

<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<uses-permission android:name="android.permission.MEDIA_PROJECTION" />

<service

? ? ? ? ? ? android:name=".xxxService"
? ? ? ? ? ? android:foregroundServiceType="mediaProjection"
? ? ? ? ? ? tools:node="replace"
? ? ? ? ? ? android:exported="false"/>

10.其他改動(dòng)待補(bǔ)充

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