android.support已死，androidx当立—

本文主要是介绍android.support已死，androidx当立——弃用support库指南，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

前言
androidx 是对 android.support.xxx 包的整理后产物。由于之前的support包过于混乱，所以，google推出了 androidX。

自support v7:28.+开始，大部分support包都会迁移到androidx下，，所以建议开发者们尽早将项目转移到androidx下

迁移步骤
1.先备份项目！
2.使用Android Studio自动迁移
在菜单栏中依次进入Refactor > Migrate to AndroidX，之后as会提示备份项目，如果已备份就不用勾选备份选项。

迁移完成之后，gradle.properties里会多出这两行

android.useAndroidX=true
android.enableJetifier=true

如果你的项目中没有使用任何三方依赖，那么android.enableJetifier可以设置为false

3. 旧依赖包名与新包名对照表（建议使用Ctrl + F搜索）
执行Migrate to AndroidX完成之后，虽然常用的support包都会被转成对应的androidx里的包名，但还是依然有部分包名未能转换成功，这时候需要我们手动修改。转载请注明出处，本文来自https://blog.csdn.net/yin_ol/article/details/89421390

原包名   新包名
android.arch.core:common androidx.arch.core:core-common
android.arch.core:core androidx.arch.core:core
android.arch.core:core-testing    androidx.arch.core:core-testing
android.arch.core:runtime      androidx.arch.core:core-runtime
android.arch.lifecycle:common    androidx.lifecycle:lifecycle-common
android.arch.lifecycle:common-java8   androidx.lifecycle:lifecycle-common-java8
android.arch.lifecycle:compiler   androidx.lifecycle:lifecycle-compiler
android.arch.lifecycle:extensions    androidx.lifecycle:lifecycle-extensions
android.arch.lifecycle:livedata   androidx.lifecycle:lifecycle-livedata
android.arch.lifecycle:livedata-core   androidx.lifecycle:lifecycle-livedata-core
android.arch.lifecycle:reactivestreams   androidx.lifecycle:lifecycle-reactivestreams
android.arch.lifecycle:runtime   androidx.lifecycle:lifecycle-runtime
android.arch.lifecycle:viewmodel    androidx.lifecycle:lifecycle-viewmodel
android.arch.paging:common   androidx.paging:paging-common
android.arch.paging:runtime    androidx.paging:paging-runtime
android.arch.paging:rxjava2   androidx.paging:paging-rxjava2
android.arch.persistence.room:common    androidx.room:room-common
android.arch.persistence.room:compiler   androidx.room:room-compiler
android.arch.persistence.room:guava   androidx.room:room-guava
android.arch.persistence.room:migration   androidx.room:room-migration
android.arch.persistence.room:runtime   androidx.room:room-runtime
android.arch.persistence.room:rxjava2      androidx.room:room-rxjava2
android.arch.persistence.room:testing    androidx.room:room-testing
android.arch.persistence:db   androidx.sqlite:sqlite
android.arch.persistence:db-framework   androidx.sqlite:sqlite-framework
com.android.support.constraint:constraint-layout   androidx.constraintlayout:constraintlayout
com.android.support.constraint:constraint-layout-solver   androidx.constraintlayout:constraintlayout-solver
com.android.support.test.espresso.idling:idling-concurrent    androidx.test.espresso.idling:idling-concurrent
com.android.support.test.espresso.idling:idling-net      androidx.test.espresso.idling:idling-net
com.android.support.test.espresso:espresso-accessibility    androidx.test.espresso:espresso-accessibility
com.android.support.test.espresso:espresso-contrib   androidx.test.espresso:espresso-contrib
com.android.support.test.espresso:espresso-core   androidx.test.espresso:espresso-core
com.android.support.test.espresso:espresso-idling-resource    androidx.test.espresso:espresso-idling-resource
com.android.support.test.espresso:espresso-intents   androidx.test.espresso:espresso-intents
com.android.support.test.espresso:espresso-remote   androidx.test.espresso:espresso-remote
com.android.support.test.espresso:espresso-web   androidx.test.espresso:espresso-web
com.android.support.test.janktesthelper:janktesthelper   androidx.test.jank:janktesthelper
com.android.support.test.services:test-services   androidx.test:test-services
com.android.support.test.uiautomator:uiautomator      androidx.test.uiautomator:uiautomator
com.android.support.test:monitor   androidx.test:monitor
com.android.support.test:orchestrator      androidx.test:orchestrator
com.android.support.test:rules   androidx.test:rules
com.android.support.test:runner   androidx.test:runner
com.android.support:animated-vector-drawable      androidx.vectordrawable:vectordrawable-animated
com.android.support:appcompat-v7      androidx.appcompat:appcompat
com.android.support:asynclayoutinflater   androidx.asynclayoutinflater:asynclayoutinflater
com.android.support:car androidx.car:car
com.android.support:cardview-v7   androidx.cardview:cardview
com.android.support:collections      androidx.collection:collection
com.android.support:coordinatorlayout    androidx.coordinatorlayout:coordinatorlayout
com.android.support:cursoradapter   androidx.cursoradapter:cursoradapter
com.android.support:customtabs   androidx.browser:browser
com.android.support:customview   androidx.customview:customview
com.android.support:design   com.google.android.material:material
com.android.support:documentfile   androidx.documentfile:documentfile
com.android.support:drawerlayout   androidx.drawerlayout:drawerlayout
com.android.support:exifinterface   androidx.exifinterface:exifinterface
com.android.support:gridlayout-v7   androidx.gridlayout:gridlayout
com.android.support:heifwriter   androidx.heifwriter:heifwriter
com.android.support:interpolator   androidx.interpolator:interpolator
com.android.support:leanback-v17   androidx.leanback:leanback
com.android.support:loader   androidx.loader:loader
com.android.support:localbroadcastmanager   androidx.localbroadcastmanager:localbroadcastmanager
com.android.support:media2   androidx.media2:media2:1.0.0-alpha03
com.android.support:media2-exoplayer   androidx.media2:media2-exoplayer
com.android.support:mediarouter-v7   androidx.mediarouter:mediarouter
com.android.support:multidex   androidx.multidex:multidex
com.android.support:multidex-instrumentation   androidx.multidex:multidex-instrumentation
com.android.support:palette-v7   androidx.palette:palette
com.android.support:percent   androidx.percentlayout:percentlayout
com.android.support:preference-leanback-v17   androidx.leanback:leanback-preference
com.android.support:preference-v14   androidx.legacy:legacy-preference-v14
com.android.support:preference-v7   androidx.preference:preference
com.android.support:print   androidx.print:print
com.android.support:recommendation   androidx.recommendation:recommendation
com.android.support:recyclerview-selection   androidx.recyclerview:recyclerview-selection
com.android.support:recyclerview-v7   androidx.recyclerview:recyclerview
com.android.support:slices-builders   androidx.slice:slice-builders
com.android.support:slices-core   androidx.slice:slice-core
com.android.support:slices-view   androidx.slice:slice-view
com.android.support:slidingpanelayout   androidx.slidingpanelayout:slidingpanelayout
com.android.support:support-annotations   androidx.annotation:annotation
com.android.support:support-compat   androidx.core:core
com.android.support:support-content   androidx.contentpager:contentpager
com.android.support:support-core-ui   androidx.legacy:legacy-support-core-ui
com.android.support:support-core-utils   androidx.legacy:legacy-support-core-utils
com.android.support:support-dynamic-animation   androidx.dynamicanimation:dynamicanimation
com.android.support:support-emoji   androidx.emoji:emoji
com.android.support:support-emoji-appcompat   androidx.emoji:emoji-appcompat
com.android.support:support-emoji-bundled   androidx.emoji:emoji-bundled
com.android.support:support-fragment   androidx.fragment:fragment
com.android.support:support-media-compat   androidx.media:media
com.android.support:support-tv-provider   androidx.tvprovider:tvprovider
com.android.support:support-v13   androidx.legacy:legacy-support-v13
com.android.support:support-v4   androidx.legacy:legacy-support-v4
com.android.support:support-vector-drawable   androidx.vectordrawable:vectordrawable
com.android.support:swiperefreshlayout   androidx.swiperefreshlayout:swiperefreshlayout
com.android.support:textclassifier   androidx.textclassifier:textclassifier
com.android.support:transition   androidx.transition:transition
com.android.support:versionedparcelable   androidx.versionedparcelable:versionedparcelable
com.android.support:viewpager   androidx.viewpager:viewpager
com.android.support:wear   androidx.wear:wear
com.android.support:webkit   androidx.webkit:webkit