android - AndroidX Build Fails in Release Mode regarding appComponentFactory

Question

I'm using Android P and compiling against AndroidX. Works great in debug/beta, but when I make a release I get a cryptic crash during runtime:

2018-06-24 00:21:26.080 11971-11971/? E/LoadedApk: Unable to instantiate appComponentFactory java.lang.ClassNotFoundException: Didn't find class "androidx.core.app.CoreComponentFactory" on path: DexPathList[[zip file "/data/app/app.itsyour.elegantstocks-EuVZWdDgzplhm0Hpa90VwA==/base.apk"],nativeLibraryDirectories=[/data/app/app.itsyour.elegantstocks-EuVZWdDgzplhm0Hpa90VwA==/lib/x86, /system/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:126) at java.lang.ClassLoader.loadClass(ClassLoader.java:379) at java.lang.ClassLoader.loadClass(ClassLoader.java:312) at android.app.LoadedApk.createAppFactory(LoadedApk.java:226) at android.app.LoadedApk.createOrUpdateClassLoaderLocked(LoadedApk.java:731) at android.app.LoadedApk.getClassLoader(LoadedApk.java:772) at android.app.LoadedApk.getResources(LoadedApk.java:994) at android.app.ContextImpl.createAppContext(ContextImpl.java:2345) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5736) at android.app.ActivityThread.access$1000(ActivityThread.java:197) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1634) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6642) 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) 2018-06-24 00:21:26.145 1667-1854/? E/SurfaceFlinger: ro.sf.lcd_density must be defined as a build property 2018-06-24 00:21:26.233 1667-1703/? E/SurfaceFlinger: ro.sf.lcd_density must be defined as a build property 2018-06-24 00:21:29.627 1796-1913/? E/TaskPersister: File error accessing recents directory (directory doesn't exist?). 2018-06-24 00:21:30.087 11971-11971/? E/AndroidRuntime: FATAL EXCEPTION: main Process: app.itsyour.elegantstocks, PID: 11971 java.lang.IllegalArgumentException: Parameter specified as non-null is null: method c.d.b.h.b, parameter $receiver at app.itsyour.elegantstocks.a.b.a(Unknown Source:2) at app.itsyour.elegantstocks.feature.navigator.b.a$a.a(Unknown Source:24) at app.itsyour.elegantstocks.feature.navigator.b.a.a(Unknown Source:13) at app.itsyour.elegantstocks.feature.navigator.b.a.a(Unknown Source:2) at androidx.recyclerview.widget.RecyclerView$a.a(Unknown Source:0) at androidx.recyclerview.widget.RecyclerView$a.b(Unknown Source:29) at androidx.recyclerview.widget.RecyclerView$p.a(Unknown Source:39) at androidx.recyclerview.widget.RecyclerView$p.a(Unknown Source:510) at androidx.recyclerview.widget.RecyclerView$p.a(Unknown Source:5) at androidx.recyclerview.widget.RecyclerView$p.c(Unknown Source:1) at androidx.recyclerview.widget.LinearLayoutManager$c.a(Unknown Source:11) at androidx.recyclerview.widget.LinearLayoutManager.a(Unknown Source:0) at androidx.recyclerview.widget.LinearLayoutManager.a(Unknown Source:44) at androidx.recyclerview.widget.LinearLayoutManager.c(Unknown Source:371) at androidx.recyclerview.widget.RecyclerView.O(Unknown Source:42) at androidx.recyclerview.widget.RecyclerView.q(Unknown Source:41) at androidx.recyclerview.widget.RecyclerView.onLayout(Unknown Source:5) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at androidx.constraintlayout.widget.ConstraintLayout.onLayout(Unknown Source:66) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at androidx.swiperefreshlayout.widget.SwipeRefreshLayout.onLayout(Unknown Source:60) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at androidx.coordinatorlayout.widget.CoordinatorLayout.d(Unknown Source:143) at androidx.coordinatorlayout.widget.CoordinatorLayout.a(Unknown Source:32) at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout(Unknown Source:48) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1812) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1656) at android.widget.LinearLayout.onLayout(LinearLayout.java:1565) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1812) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1656) at android.widget.LinearLayout.onLayout(LinearLayout.java:1565) at android.view.View.layout(View.java:20670) at android.view.ViewGroup.layout(ViewGroup.java:6194) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at com.android.internal.policy.DecorView.onLayout(DecorView.java:753) at android.view.View.layout(View.java:20670) 2018-06-24 00:21:30.087 11971-11971/? E/AndroidRuntime: at android.view.ViewGroup.layout(ViewGroup.java:6194) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2767) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2294) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1447) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7130) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:935) at android.view.Choreographer.doCallbacks(Choreographer.java:747) at android.view.Choreographer.doFrame(Choreographer.java:682) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:921) at android.os.Handler.handleCallback(Handler.java:873) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6642) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 2018-06-24 00:21:30.137 1796-1880/? E/InputDispatcher: channel '5896582 app.itsyour.elegantstocks/app.itsyour.elegantstocks.feature.navigator.NavigatorActivity (server)' ~ Channel is unrecoverably broken and will be disposed! 2018-06-24 00:21:30.253 5198-9377/? E/EntrySyncManager: Cannot determine account name: drop request 2018-06-24 00:21:30.253 5198-9377/? E/NowController: Failed to access data from EntryProvider. ExecutionException. java.util.concurrent.ExecutionException: com.google.android.apps.gsa.sidekick.main.h.n: Could not complete scheduled request to refresh entries. ClientErrorCode: 3 at com.google.common.util.concurrent.d.eA(SourceFile:85) at com.google.common.util.concurrent.d.get(SourceFile:23) at com.google.common.util.concurrent.l.get(SourceFile:2) at com.google.android.apps.gsa.staticplugins.nowstream.b.a.be.caI(SourceFile:47) at com.google.android.apps.gsa.staticplugins.nowstream.b.a.be.caH(SourceFile:176) at com.google.android.apps.gsa.staticplugins.nowstream.b.a.bh.run(Unknown Source:2) at com.google.android.apps.gsa.shared.util.concurrent.at.run(SourceFile:4) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:458) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:458) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at com.google.android.apps.gsa.shared.util.concurrent.b.g.run(Unknown Source:4) at com.google.android.apps.gsa.shared.util.concurrent.b.aw.run(SourceFile:4) at com.google.android.apps.gsa.shared.util.concurrent.b.aw.run(SourceFile:4) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:764) at com.google.android.apps.gsa.shared.util.concurrent.b.i.run(SourceFile:6) Caused by: com.google.android.apps.gsa.sidekick.main.h.n: Could not complete scheduled request to refresh entries. ClientErrorCode: 3 at com.google.android.apps.gsa.staticplugins.nowstream.b.a.aq.az(Unknown Source:4) at com.google.common.util.concurrent.q.ap(SourceFile:7) at com.google.common.util.concurrent.p.run(SourceFile:32) at com.google.common.util.concurrent.bt.execute(SourceFile:3) at com.google.common.util.concurrent.d.b(SourceFile:275) at com.google.common.util.concurrent.d.addListener(SourceFile:135) at com.google.common.util.concurrent.p.b(SourceFile:3) at com.google.android.apps.gsa.shared.util.concurrent.h.a(SourceFile:16) at com.google.android.apps.gsa.shared.util.concurrent.h.a(SourceFile:13) at com.google.android.apps.gsa.staticplugins.nowstream.b.a.be.caI(SourceFile:45) at com.google.android.apps.gsa.staticplugins.nowstream.b.a.be.caH(SourceFile:176)? at com.google.android.apps.gsa.staticplugins.nowstream.b.a.bh.run(Unknown Source:2)? at com.google.android.apps.gsa.shared.util.concurrent.at.run(SourceFile:4)? at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:458)? at java.util.concurrent.FutureTask.run(FutureTask.java:266)? at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:458)? at java.util.concurrent.FutureTask.run(FutureTask.java:266)? at com.google.android.apps.gsa.shared.util.concurrent.b.g.run(Unknown Source:4)? at com.google.android.apps.gsa.shared.util.concurrent.b.aw.run(SourceFile:4)? at

Answer 1

Add -keep class androidx.core.app.CoreComponentFactory { *; } to your proguard config so that this class won't be proguarded out