迁移到 AndroidX 后，我遇到了 Google Auth lib 的以下问题：
在 Android 9 API 28 上：
java.lang.IncompatibleClassChangeError: Class 'com.google.android.gms.auth.api.signin.internal.SignInHubActivity' does not implement interface 'androidx.lifecycle.LifecycleOwner' in call to 'androidx.lifecycle.Lifecycle androidx.lifecycle.LifecycleOwner.getLifecycle()' (declaration of 'androidx.lifecycle.LiveData' appears in /data/app/fourbottles.bsg.workinghours4b-G1onPKgFFE-l3aqjx0qDJw==/split_lib_dependencies_apk.apk)
at androidx.lifecycle.LiveData.observe(LiveData.java:172)
at androidx.loader.app.LoaderManagerImpl$LoaderInfo.setCallback(LoaderManagerImpl.java:100)
at androidx.loader.app.LoaderManagerImpl.createAndInstallLoader(LoaderManagerImpl.java:400)
at androidx.loader.app.LoaderManagerImpl.initLoader(LoaderManagerImpl.java:421)
at com.google.android.gms.auth.api.signin.internal.SignInHubActivity.zzn(Unknown Source:80)
at com.google.android.gms.auth.api.signin.internal.SignInHubActivity.onActivityResult(Unknown Source:68)
at android.app.Activity.dispatchActivityResult(Activity.java:7454)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4353)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4402)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
在 Android 5.0.2 API 22 上
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'androidx.lifecycle.Lifecycle$State androidx.lifecycle.Lifecycle.getCurrentState()' on a null object reference
at androidx.lifecycle.LiveData.observe(LiveData.java:172)
at androidx.loader.app.LoaderManagerImpl$LoaderInfo.setCallback(LoaderManagerImpl.java:100)
at androidx.loader.app.LoaderManagerImpl.createAndInstallLoader(LoaderManagerImpl.java:400)
at androidx.loader.app.LoaderManagerImpl.initLoader(LoaderManagerImpl.java:421)
at com.google.android.gms.auth.api.signin.internal.SignInHubActivity.zzn(Unknown Source)
at com.google.android.gms.auth.api.signin.internal.SignInHubActivity.onActivityResult(Unknown Source)
at android.app.Activity.dispatchActivityResult(Activity.java:6139)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3535)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3582)
at android.app.ActivityThread.access$1300(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1327)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
我正在使用以下库版本：
implementation 'com.google.android.gms:play-services-gcm:16.0.0'
implementation 'com.google.android.gms:play-services-auth:16.0.1'
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.multidex:multidex:2.0.1'
一旦我开始有意图的活动，代码就会崩溃：
val signInIntent = Auth.GoogleSignInApi.getSignInIntent(googleApiClient)
startActivityForResult(signInIntent, LOGIN_WITH_GOOGLE_CODE)
我在 settings.gradle 文件中有以下属性：
android.useAndroidX=true
android.enableJetifier=true
Google Auth 库不支持使用 AndroidX 库进行身份验证？
有没有办法从一个支持 lib 行为的 androidX lib 开始一个意图？
我接受 java 和 kotlin 语言的答案。
更新 1: 27.12.2017
谷歌api客户端创建：
GoogleSignInOptions googleSignInOptions = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
googleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this, this)
.addApi(Auth.GOOGLE_SIGN_IN_API, googleSignInOptions)
.build();
可能是因为enableAutoManage？
更新 2：28.12.2018
我设法使用以下代码登录：
Task<GoogleSignInAccount> sign = googleSignInClient.silentSignIn();
GoogleSignInAccount result = sign.getResult();
所以我认为凭据或其他配置文件没有问题。这样，用户将无法选择帐户。
我认为 Jetifier 以同样的方式失败。
使用 API 27 我得到了同样的错误。