Android Studio fails taking screenshot of device

Question

Android Studio sometimes gives the following errors when I try to take a screenshot of physical device from the Debug tab.

These errors appear on the "Dump #1" sub-tab of the Debug tab:

"GAC_Executor[0]@5406" prio=5 tid=0x51eb nid=NA waiting
  java.lang.Thread.State: WAITING
     blocks GAC_Executor[0]@5406
      at java.lang.Object.wait(Object.java:-1)
      at java.lang.Thread.parkFor$(Thread.java:2135)
      - locked <0x1aa5> (a java.lang.Object)
      at sun.misc.Unsafe.park(Unsafe.java:358)
      at java.util.concurrent.locks.LockSupport.park(LockSupport.java:190)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2059)
      at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
      at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1087)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
      at Os.run(SourceFile:5)
      at java.lang.Thread.run(Thread.java:764)

Another type of error:

"CrAsyncTask #1@4908" prio=5 tid=0x161 nid=NA waiting
  java.lang.Thread.State: WAITING
     blocks CrAsyncTask #1@4908
      at java.lang.Object.wait(Object.java:-1)
      at java.lang.Thread.parkFor$(Thread.java:2135)
      - locked <0x180a> (a java.lang.Object)
      at sun.misc.Unsafe.park(Unsafe.java:358)
      at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:230)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2101)
      at java.util.concurrent.ArrayBlockingQueue.poll(ArrayBlockingQueue.java:402)
      at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1086)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
      at java.lang.Thread.run(Thread.java:764)

Another type of error:

"FinalizerDaemon@6149" daemon prio=5 tid=0x158 nid=NA waiting
  java.lang.Thread.State: WAITING
     blocks FinalizerDaemon@6149
      at java.lang.Object.wait(Object.java:-1)
      at java.lang.Object.wait(Object.java:422)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:188)
      - locked <0x1808> (a java.lang.Object)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:209)
      at java.lang.Daemons$FinalizerDaemon.runInternal(Daemons.java:232)
      at java.lang.Daemons$Daemon.run(Daemons.java:103)
      at java.lang.Thread.run(Thread.java:764)

Another type of error:

"CleanupReference@5418" daemon prio=5 tid=0x16b nid=NA waiting
  java.lang.Thread.State: WAITING
     blocks CleanupReference@5418
      at java.lang.Object.wait(Object.java:-1)
      at java.lang.Object.wait(Object.java:422)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:188)
      - locked <0x180e> (a java.lang.Object)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:209)
      at ayH.run(SourceFile:3)

Another type of error:

"ReferenceQueueDaemon@6148" daemon prio=5 tid=0x157 nid=NA waiting
  java.lang.Thread.State: WAITING
     blocks ReferenceQueueDaemon@6148
      at java.lang.Object.wait(Object.java:-1)
      at java.lang.Daemons$ReferenceQueueDaemon.runInternal(Daemons.java:178)
      - locked <0xc44> (a java.lang.Class)
      at java.lang.Daemons$Daemon.run(Daemons.java:103)
      at java.lang.Thread.run(Thread.java:764)

Another type of error:

"FinalizerWatchdogDaemon@6150" daemon prio=5 tid=0x159 nid=NA sleeping
  java.lang.Thread.State: TIMED_WAITING
     blocks FinalizerWatchdogDaemon@6150
      at java.lang.Thread.sleep(Thread.java:-1)
      at java.lang.Thread.sleep(Thread.java:373)
      - locked <0x1809> (a java.lang.Object)
      at java.lang.Thread.sleep(Thread.java:314)
      at java.lang.Daemons$FinalizerWatchdogDaemon.sleepFor(Daemons.java:342)
      at java.lang.Daemons$FinalizerWatchdogDaemon.waitForFinalization(Daemons.java:364)
      at java.lang.Daemons$FinalizerWatchdogDaemon.runInternal(Daemons.java:281)
      at java.lang.Daemons$Daemon.run(Daemons.java:103)
      at java.lang.Thread.run(Thread.java:764)

Usually I can work around it by restarting Android Studio but today I'm getting it more consistently.

I've also tried restarting my Mac, restarting the Nexus 5x physical device, replugging the device into a different port, and issuing the adb kill-server command. None of that helped.

Anyone know what causes this problem and how to avoid it?

Long shot here, but by any chance don't you have a missing update to Android Studio? — cmota
– cmota, Commented Jan 9, 2019 at 22:19
@cmota good suggestion, updating Android Studio fixed the problem. I upgraded from Android Studio 3.2 to 3.2.1 and now I can take screenshots again. You can submit this as a solution and I'll accept it. — Michael Osofsky
– Michael Osofsky, Commented Jan 9, 2019 at 22:25

cmota · Accepted Answer · 2019-01-09 23:51:29Z

2

This might be something from Android Studio 3.2. Can you update it to a newer one?

I'm using 3.2.1 (October 09, 2018) on my Mac without any problem.

answered Jan 9, 2019 at 23:51

cmota

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2 Comments

Michael Osofsky Over a year ago

Although this solution did work yesterday, I am getting the errors again. A temporary workaround is to take a screenshot on the device (e.g. on Nexus 5X press and hold simultaneously the power and volume-down buttons). Then in Android Studio go to the View -> Tools Windows -> Device File Explorer and navigate to \sdcard\Pictures\Screenshots.

3c71 Over a year ago

Having the same issue with Android Studio 2022.2.1 Patch 2 on a particular device that used to work fine. Other device report screenshot ok! Did you solve your issue since ?

rajkabbur · Accepted Answer · 2020-05-06 08:24:01Z

2

It happens if you attach a debugger to the app and then try to press a camera icon at Tool Windows > Debug. Actually the camera icon on debug window is for thread dump not for a screenshot. So it is misleading.

You have to press Logcat window > camera. Follow the below instructions as mentioned at

https://developer.android.com/studio/debug/am-screenshot

Run your app on a connected device or emulator. If using a connected device, be sure you have enabled USB debugging. In Android Studio, select View > Tool Windows > Logcat to open Logcat. Select the device and a process from the drop-down at the top of the window. Click Screen Capture on the left side of the window.

answered May 6, 2020 at 8:24

rajkabbur

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