Hi support,
I'm planning to use anbox-cloud to setup a test environment for my application, more than one use accessibility service, but when I try to enable the setting for my app in android UI the settings app crash.
Some logcat just after the crash :
```
2023-05-25 18:17:30.675 16915-16915 HighlightableTopLevelAdapter com.android.settings D Request highlight position 9
2023-05-25 18:17:30.675 16915-16915 HighlightableTopLevelAdapter com.android.settings D Is highlight needed: false
2023-05-25 18:17:30.677 256-1615 ActivityTaskManager system_server I START u0 {act=android.intent.action.MAIN cmp=com.android.settings/.SubSettings (has extras)} from uid 1000
2023-05-25 18:17:30.680 256-1615 ActivityTaskManager system_server W Tried to set launchTime (0) < mLastActivityLaunchTime (96217191)
2023-05-25 18:17:30.684 16915-16915 ActivityEmbeddingUtils com.android.settings D isFlagEnabled = true
2023-05-25 18:17:30.684 16915-16915 ActivityEmbeddingUtils com.android.settings D isSplitSupported = true
2023-05-25 18:17:30.687 16915-16915 SettingsActivity com.android.settings D Starting onCreate
2023-05-25 18:17:30.688 16915-16915 SettingsActivity com.android.settings D Starting to set activity title
2023-05-25 18:17:30.688 16915-16915 SettingsActivity com.android.settings D Done setting title
2023-05-25 18:17:30.688 16915-16915 SettingsActivity com.android.settings D Switching to fragment com.android.settings.accessibility.AccessibilitySettings
2023-05-25 18:17:30.688 16915-16915 SubSettings com.android.settings D Launching fragment com.android.settings.accessibility.AccessibilitySettings
2023-05-25 18:17:30.689 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.TextReadingFragmentForA11ySettingsController
2023-05-25 18:17:30.690 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.ReduceBrightColorsPreferenceController
2023-05-25 18:17:30.690 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.MagnificationPreferenceController
2023-05-25 18:17:30.690 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.VibrationPreferenceController
2023-05-25 18:17:30.690 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.LiveCaptionPreferenceController
2023-05-25 18:17:30.690 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.CaptioningPreferenceController
2023-05-25 18:17:30.690 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.RTTSettingPreferenceController
2023-05-25 18:17:30.690 16915-16915 RTTSettingsCtr com.android.settings D init controller
2023-05-25 18:17:30.690 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.AudioDescriptionPreferenceController
2023-05-25 18:17:30.691 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.accessibility.AccessibilityHearingAidPreferenceController
2023-05-25 18:17:30.691 16915-16915 BluetoothAdapter com.android.settings E Bluetooth service is null
2023-05-25 18:17:30.691 16915-16915 BluetoothAdapter com.android.settings E Bluetooth service is null
2023-05-25 18:17:30.691 16915-16915 PrefCtrlListHelper com.android.settings D Could not find Context-only controller for pref: com.android.settings.language.TtsPreferenceController
2023-05-25 18:17:30.692 256-1615 UserRestrictionsUtils system_server E Unknown restriction queried by uid 1000 (com.android.providers.settings et al): null
2023-05-25 18:17:30.693 16915-16915 AccessibilitySettings com.android.settings D NO dashboard tiles for AccessibilitySettings
2023-05-25 18:17:30.693 16915-16915 AccessibilitySettings com.android.settings D All preferences added, reporting fully drawn
2023-05-25 18:17:30.697 16915-16915 SettingsActivity com.android.settings D Executed frag manager pendingTransactions
2023-05-25 18:17:30.701 16915-16915 AndroidRuntime com.android.settings D Shutting down VM
2023-05-25 18:17:30.701 16915-16915 AndroidRuntime com.android.settings E FATAL EXCEPTION: main
Process: com.android.settings, PID: 16915
java.lang.RuntimeException: Failed to call observer method
at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:226)
at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:194)
at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeCallbacks(ClassesInfoCache.java:186)
at androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:37)
at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:354)
at androidx.lifecycle.LifecycleRegistry.forwardPass(LifecycleRegistry.java:265)
at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:307)
at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:148)
at androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:134)
at com.android.settingslib.core.lifecycle.ObservablePreferenceFragment.onStart(ObservablePreferenceFragment.java:80)
at com.android.settings.core.InstrumentedPreferenceFragment.onStart(InstrumentedPreferenceFragment.java:71)
at com.android.settings.dashboard.DashboardFragment.onStart(DashboardFragment.java:201)
at com.android.settings.accessibility.AccessibilitySettings.onStart(AccessibilitySettings.java:202)
at androidx.fragment.app.Fragment.performStart(Fragment.java:3019)
at androidx.fragment.app.FragmentStateManager.start(FragmentStateManager.java:568)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:277)
at androidx.fragment.app.FragmentStore.moveToExpectedState(FragmentStore.java:113)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1331)
at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2772)
at androidx.fragment.app.FragmentManager.dispatchStart(FragmentManager.java:2722)
at androidx.fragment.app.FragmentController.dispatchStart(FragmentController.java:273)
at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:486)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1510)
at android.app.Activity.performStart(Activity.java:8315)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3701)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2308)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.app.ActivityThread.main(ActivityThread.java:7898)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'com.android.settingslib.bluetooth.BluetoothEventManager com.android.settingslib.bluetooth.LocalBluetoothManager.getEventManager()' on a null object reference
at com.android.settings.accessibility.AccessibilityHearingAidPreferenceController.onStart(AccessibilityHearingAidPreferenceController.java:113)
at com.android.settingslib.core.lifecycle.Lifecycle.onStart(Lifecycle.java:124)
at com.android.settingslib.core.lifecycle.Lifecycle.-$$Nest$monStart(Unknown Source:0)
at com.android.settingslib.core.lifecycle.Lifecycle$LifecycleProxy.onLifecycleEvent(Lifecycle.java:222)
at java.lang.reflect.Method.invoke(Native Method)
2023-05-25 18:17:30.701 16915-16915 AndroidRuntime com.android.settings E at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:222)
... 36 more
2023-05-25 18:17:30.702 256-1615 ActivityTaskManager system_server W Force finishing activity com.android.settings/.SubSettings
2023-05-25 18:17:30.702 256-16975 DropBoxManagerService system_server I add tag=system_app_crash isTagEnabled=true flags=0x2
2023-05-25 18:17:30.724 256-1615 ActivityTaskManager system_server W Force finishing activity com.android.settings/.Settings
2023-05-25 18:17:30.725 16915-16915 Process com.android.settings I Sending signal. PID: 16915 SIG: 9
2023-05-25 18:17:30.733 256-572 ActivityManager system_server I Process com.android.settings (pid 16915) has died: fg TOP
2023-05-25 18:17:30.733 256-1615 ActivityTaskManager system_server W Force remove immediately ActivityRecord{e80052 u0 com.android.settings/.Settings} t32 f}} state=STOPPING
2023-05-25 18:17:30.734 256-284 libprocessgroup system_server I Successfully killed process cgroup uid 1000 pid 16915 in 0ms
2023-05-25 18:17:30.734 256-1615 WindowManager system_server W removeAppToken: Attempted to remove non-existing token: Token{78d0cdd ActivityRecord{e80052 u0 com.android.settings/.Settings} t32 f} isExiting}}
2023-05-25 18:17:30.734 256-1615 InputManager-JNI system_server W Input channel object 'd9174fe com.android.settings/com.android.settings.Settings (client)' was disposed without first being removed with the input manager!
2023-05-25 18:17:30.735 256-1615 ActivityTaskManager system_server W Force remove immediately ActivityRecord{4f9dc47 u0 com.android.settings/.SubSettings} t32 f}} state=PAUSING
2023-05-25 18:17:30.736 256-15435 WindowManager system_server W Failed looking up window session=Session{2991b03 16915:1000} callers=com.android.server.wm.WindowManagerService.windowForClientLocked:5898 com.android.server.wm.WindowState$DeathRecipient.binderDied:3126 android.os.IBinder$DeathRecipient.binderDied:317
2023-05-25 18:17:30.736 256-15435 WindowManager system_server I WIN DEATH: null
2023-05-25 18:17:30.736 256-359 NetworkStats system_server E Fail to set UidCounterSet: Null bpf map
2023-05-25 18:17:30.737 73-73 Zygote zygote64 I Process 16915 exited due to signal 9 (Killed)
2023-05-25 18:17:30.737 256-286 libprocessgroup system_server W Failed to open /dev/stune/top-app/cgroup.procs: No such file or directory
2023-05-25 18:17:30.737 256-286 libprocessgroup system_server W Failed to open /dev/cpuset/top-app/cgroup.procs: No such file or directory
2023-05-25 18:17:30.737 256-286 libprocessgroup system_server W Failed to open /dev/blkio//cgroup.procs: No such file or directory
2023-05-25 18:17:30.738 256-274 ActivityManager system_server W setHasOverlayUi called on unknown pid: 16915
2023-05-25 18:17:30.749 105-105 BpTransactionCompletedListener surfaceflinger E Failed to transact (-32)
2023-05-25 18:17:30.806 733-1034 EGL_emulation com.android.launcher3 E tid 1034: eglSurfaceAttrib(1417): error 0x3009 (EGL_BAD_MATCH)
2023-05-25 18:17:30.806 733-1034 OpenGLRenderer com.android.launcher3 W Failed to set EGL_SWAP_BEHAVIOR on surface 0x7f6bafa6c0a0, error=EGL_BAD_MATCH
2023-05-25 18:17:30.838 256-2001 OpenGLRenderer system_server W Failed to initialize 101010-2 format, error = EGL_SUCCESS
2023-05-25 18:17:31.224 256-274 ActivityTaskManager system_server W Activity top resumed state loss timeout for ActivityRecord{4f9dc47 u0 com.android.settings/.SubSettings} t-1 f}}
2023-05-25 18:17:31.790 256-335 InputReader system_server W Received unexpected event (0x35, 0xf6) for slot 0 with tracking id 0
2023-05-25 18:17:31.790 256-335 InputReader system_server W Received unexpected event (0x36, 0x1f2) for slot 0 with tracking id 0
2023-05-25 18:17:31.811 256-335 InputReader system_server W Received unexpected event (0x35, 0xf8) for slot 0 with tracking id 0
2023-05-25 18:17:31.811 256-335 InputReader system_server W Received unexpected event (0x36, 0x1f2) for slot 0 with tracking id 0
2023-05-25 18:17:31.814 256-335 InputReader system_server W Received unexpected event (0x35, 0xf9) for slot 0 with tracking id 0
2023-05-25 18:17:31.814 256-335 InputReader system_server W Received unexpected event (0x36, 0x1f1) for slot 0 with tracking id 0
2023-05-25 18:17:31.823 256-335 InputReader system_server W Received unexpected event (0x35, 0xfc) for slot 0 with tracking id 0
2023-05-25 18:17:31.823 256-335 InputReader system_server W Received unexpected event (0x36, 0x1ef) for slot 0 with tracking id 0
2023-05-25 18:17:31.831 256-335 InputReader system_server W Received unexpected event (0x35, 0xfc) for slot 0 with tracking id 0
2023-05-25 18:17:31.831 256-335 InputReader system_server W Received unexpected event (0x36, 0x1ee) for slot 0 with tracking id 0
2023-05-25 18:17:31.840 256-335 InputReader system_server W Received unexpected event (0x35, 0xfe) for slot 0 with tracking id 0
2023-05-25 18:17:31.840 256-335 InputReader system_server W Received unexpected event (0x36, 0x1ed) for slot 0 with tracking id 0
2023-05-25 18:17:31.848 256-335 InputReader system_server W Received unexpected event (0x35, 0xff) for slot 0 with tracking id 0
2023-05-25 18:17:31.848 256-335 InputReader system_server W Received unexpected event (0x36, 0x1ec) for slot 0 with tracking id 0
2023-05-25 18:17:31.857 256-335 InputReader system_server W Received unexpected event (0x35, 0x100) for slot 0 with tracking id 0
2023-05-25 18:17:31.857 256-335 InputReader system_server W Received unexpected event (0x36, 0x1ea) for slot 0 with tracking id 0
2023-05-25 18:17:31.868 256-335 InputReader system_server W Received unexpected event (0x35, 0x101) for slot 0 with tracking id 0
2023-05-25 18:17:31.868 256-335 InputReader system_server W Received unexpected event (0x36, 0x1e9) for slot 0 with tracking id 0
2023-05-25 18:17:31.873 256-335 InputReader system_server W Received unexpected event (0x35, 0x104) for slot 0 with tracking id 0
2023-05-25 18:17:31.873 256-335 InputReader system_server W Received unexpected event (0x36, 0x1e6) for slot 0 with tracking id 0
2023-05-25 18:17:31.881 256-335 InputReader system_server W Received unexpected event (0x35, 0x105) for slot 0 with tracking id 0
2023-05-25 18:17:31.882 256-335 InputReader system_server W Received unexpected event (0x36, 0x1e5) for slot 0 with tracking id 0
2023-05-25 18:17:31.889 256-335 InputReader system_server W Received unexpected event (0x35, 0x106) for slot 0 with tracking id 0
2023-05-25 18:17:31.889 256-335 InputReader system_server W Received unexpected event (0x36, 0x1e4) for slot 0 with tracking id 0
```
Hey Paolo,
thanks for your report!
Which Android version are you seeing this on? It looks like a bug in AOSP that the accessibility service doesn't work nicely when Bluetooth isn't existent. We can fix this for the upcoming 1.18.1 release.