UiAutomator findObject is throwing IllegalStateException: UiAutomation not connected!

[sravanmedarapu]

Getting below Exception for every consecutive execution

java.lang.IllegalStateException: UiAutomation not connected!
at android.app.UiAutomation.throwIfNotConnectedLocked(UiAutomation.java:971)
at android.app.UiAutomation.waitForIdle(UiAutomation.java:577)
at android.support.test.uiautomator.UiAutomatorBridge.waitForIdle(UiAutomatorBridge.java:112)
at android.support.test.uiautomator.UiDevice.waitForIdle(UiDevice.java:639)
at android.support.test.uiautomator.UiDevice.waitForIdle(UiDevice.java:629)
at android.support.test.uiautomator.UiDevice.getWindowRoots(UiDevice.java:1074)
at android.support.test.uiautomator.UiDevice.findObject(UiDevice.java:164)

observed throwing above exception immediately after executing below statement in logcat

W WindowManager: Attempted to remove non-existing token: android.os.Binder@2728fc2

Tested on API Level: 19, 21, 23 emulators, issue also replicating in real device
Uiautomator Version: com.android.support.test.uiautomator:uiautomator-v18:2.1.2

Please let me know if you need any other information.

[bootstraponline]

Why is there no way for UiAutomation to automatically reconnect on disconnect?

[tpetsas]

I am getting the same error. Is there a way to work around this?

[kevin-brotcke]

Possible workaround is restarting adb before the test run with adb kill-server; adb start-server. That worked for me on another project.

[tpetsas]

@kevin-brotcke thanks for the advice. The thing is that this exception is raised during the test and AFAIK there is no way to catch it and issue those commands. Have you experienced the same behavior?

[kevin-brotcke]

I'm re-running the tests when we hit this failure. Although, my workaround above only decreases the frequency, I still see it occasionally.

[Arvind0203]

I am also having the same problem
java.lang.IllegalStateException: UiAutomation not connected!
at android.app.UiAutomation.throwIfNotConnectedLocked(UiAutomation.java:971)

Getting this occasionally while test case execution, so count not be possible to kill and start adb server in the middle and there is no way to catch it as well.
please help you somebody have solution for this.

Thanks.

[r-sharma]

Consistently happening for me. Device restart resolves sometimes but once it appears, consistency is 10/10 post that:

04-23 17:22:13.108 12796-12812/? E/AndroidRuntime: FATAL EXCEPTION: Thread-2
Process: com.example.rakeshs.uiautomator, PID: 12796
java.lang.IllegalStateException: UiAutomation not connected!
at android.app.UiAutomation.throwIfNotConnectedLocked(UiAutomation.java:1034)
at android.app.UiAutomation.executeShellCommand(UiAutomation.java:982)
at com.example.rakeshs.uiautomator.util.Utils.runCommand(Utils.java:387)
at com.example.rakeshs.uiautomator.util.Utils.profileCPUInfo(Utils.java:120)
at com.example.rakeshs.uiautomator.util.Utils$1.run(Utils.java:99)

For me it is always happening at executeShellCommand step.

[r-sharma]

Looks to be some sync issue which got resolved for me on adding some sleep before executeShellCommand():

mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
assertThat(mDevice, notNullValue());
mDevice.pressHome();
InstrumentationRegistry.getInstrumentation().getUiAutomation().executeShellCommand("pm clear <app_package_name>");
openApp(getConfigProperty(<app_package_name>));
....
....
Thread.sleep(5000);
....
p = InstrumentationRegistry.getInstrumentation().getUiAutomation().executeShellCommand(cmd);

[GauravCreed]

Hi @sravanmedarapu

i have also same issue , Error log ...

Fatal Exception: java.lang.IllegalStateException: UiAutomation not connected! at android.app.UiAutomation.throwIfNotConnectedLocked(UiAutomation.java:914) at android.app.UiAutomation.disconnect(UiAutomation.java:236) at android.app.Instrumentation.finish(Instrumentation.java:220) at android.support.test.runner.MonitoringInstrumentation.finish(MonitoringInstrumentation.java:351) at android.support.test.runner.AndroidJUnitRunner.finish(AndroidJUnitRunner.java:405) at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:394) at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1933)

[snijsure]

I am also getting same issue, when running robo tests on Firebase Cloud test infrastructure.

Fatal Exception: java.lang.IllegalStateException: UiAutomation not connected!
       at android.app.UiAutomation.throwIfNotConnectedLocked(UiAutomation.java:1034)
       at android.app.UiAutomation.disconnect(UiAutomation.java:275)
       at android.app.Instrumentation.finish(Instrumentation.java:210)
       at android.support.test.runner.MonitoringInstrumentation.finish(MonitoringInstrumentation.java:351)
       at android.support.test.runner.AndroidJUnitRunner.finish(AndroidJUnitRunner.java:405)
       at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:394)
       at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1932)

[manuelrego27]

Also getting the exact same report, when submitting an app for Alpha Testing on the Play Store