IssueTracker

To uninstall an app that has been enabled as a device administrator on the phone (specifically, Wear Mini Launcher), I attempted to uninstall it the regular way. I got the message that the app is, in fact, a device administrator which I should first deactivate. I clicked on the helpfully placed button to do so, which launched Settings into the appropriate screen.

I received a list of all the device managers configured for the phone. I attempted to uncheck the box next to Wear Mini Launcher. This has crashed the Settings app.

This means I currently have an app with (to me) unknown capabilities sitting on my phone, and I cannot remove it.

This has been happening on 6.0 and 6.0.1 builds for Nexus 5, and is happening on the current build I have installed (identifier available upon request).

Based on the system log excerpt below (collected via logcat), it seems as if the app's process (!) is responsible for displaying the deactivation UI, and is being prohibited from doing so (!!).

12-13 17:37:31.457  1939  1957 I ActivityManager: Displayed com.android.settings/.Settings$DeviceAdminSettingsActivity: +561ms
12-13 17:37:31.461  3641  3641 I Keyboard.Facilitator: onFinishInput()
12-13 17:37:33.961  1939 32232 D NetlinkSocketObserver: NeighborEvent{elapsedMs=109880756, 10.0.64.1, [6266B3FAAAE5], RTM_NEWNEIGH, NUD_STALE}
12-13 17:37:34.119  1430  1977 D audio_hw_primary: disable_audio_route: reset and update mixer path: low-latency-playback
12-13 17:37:34.120  1430  1977 D audio_hw_primary: disable_snd_device: snd_device(2: speaker)
12-13 17:37:35.028  1939  2672 D ConnectivityService: notifyType CAP_CHANGED for NetworkAgentInfo [WIFI () - 121]
12-13 17:37:35.365  1939  2847 I ActivityManager: START u0 {cmp=com.android.settings/.DeviceAdminAdd (has extras)} from uid 1000 on display 0
12-13 17:37:35.378  1430  1977 D audio_hw_primary: out_set_parameters: enter: usecase(1: low-latency-playback) kvpairs: routing=2
12-13 17:37:35.399  1430  1977 D audio_hw_primary: select_devices: out_snd_device(2: speaker) in_snd_device(0: none)
12-13 17:37:35.399  1430  1977 D msm8974_platform: platform_send_audio_calibration: sending audio calibration for snd_device(2) acdb_id(15)
12-13 17:37:35.399  1430  1977 D audio_hw_primary: enable_snd_device: snd_device(2: speaker)
12-13 17:37:35.401  1430  1977 D audio_hw_primary: enable_audio_route: apply and update mixer path: low-latency-playback
12-13 17:37:35.409  8846  8846 D AndroidRuntime: Shutting down VM
12-13 17:37:35.409  8846  8846 E AndroidRuntime: FATAL EXCEPTION: main
12-13 17:37:35.409  8846  8846 E AndroidRuntime: Process: com.android.settings, PID: 8846
12-13 17:37:35.409  8846  8846 E AndroidRuntime: java.lang.RuntimeException: Unable to resume activity {com.android.settings/com.android.settings.DeviceAdminAdd}: java.lang.SecurityException: com.npi.wearminilauncher from uid 10205 not allowed to perform SYSTEM_ALERT_WINDOW
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3103)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.ActivityThread.-wrap11(ActivityThread.java)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.os.Handler.dispatchMessage(Handler.java:102)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.os.Looper.loop(Looper.java:148)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.ActivityThread.main(ActivityThread.java:5417)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at java.lang.reflect.Method.invoke(Native Method)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
12-13 17:37:35.409  8846  8846 E AndroidRuntime: Caused by: java.lang.SecurityException: com.npi.wearminilauncher from uid 10205 not allowed to perform SYSTEM_ALERT_WINDOW
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.AppOpsManager.checkOp(AppOpsManager.java:1521)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at com.android.settings.DeviceAdminAdd.onResume(DeviceAdminAdd.java:384)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1258)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.Activity.performResume(Activity.java:6327)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3092)
12-13 17:37:35.409  8846  8846 E AndroidRuntime:        ... 10 more
12-13 17:37:35.412  1939  2843 W ActivityManager:   Force finishing activity com.android.settings/.DeviceAdminAdd
12-13 17:37:35.415  1939  2843 W ActivityManager:   Force finishing activity com.android.settings/.Settings$DeviceAdminSettingsActivity
12-13 17:37:35.448  1939  8943 W DropBoxManagerService: Dropping: system_app_crash (1614 > 0 bytes)
12-13 17:37:35.464  1939  2052 I OpenGLRenderer: Initialized EGL, version 1.4
12-13 17:37:35.916  1939  1952 W ActivityManager: Activity pause timeout for ActivityRecord{7b93fad u0 com.android.settings/.DeviceAdminAdd t11676 f}
12-13 17:37:36.587  3713  3922 W OpenGLRenderer: Incorrectly called buildLayer on View: ShortcutAndWidgetContainer, destroying layer...
12-13 17:37:37.792  3813  3105 I DeviceStateChecker: screenOn: true, isCharging: true