Android "Screenshot2" Tool NullPointerException on OSX 10.12

Asked Feb 26 '18 at 23:27

Active Mar 25 '19 at 14:38

Viewed 322 times

I'm trying to implement bitbar's opencv library to do automated testing on Android devices. The library uses Android's "screenshot2" tool. But whenever I run it either through the library or directly from the terminal on OSX 10.12 I get the following error

Exception in thread "main" java.lang.NullPointerException
    at com.android.ddmlib.MonitorThread.wakeup(MonitorThread.java:453)
    at com.android.ddmlib.MonitorThread.quit(MonitorThread.java:461)
    at com.android.ddmlib.AndroidDebugBridge.terminate(AndroidDebugBridge.java:293)
    at com.android.screenshot.Screenshot.main(Screenshot.java:280)

I'm using version 26.1.1 of Android SDK tools and JDK 8u151

asked Feb 26 '18 at 23:27

MMiller

How do you call it? – maszter Feb 27 '18 at 22:08
Just from the terminal: `screenshot2 -s [serial of my device] screencap.png` – MMiller Feb 28 '18 at 23:00
Must be something wrong with the OS or SDK itself. I would try to decompile Screenshot.class and check line 280 – maszter Mar 03 '18 at 15:27

Android "Screenshot2" Tool NullPointerException on OSX 10.12

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