Android Camera2 API - lack of privileges on resume

Question

I'm developing the app using Camera2 API. My problem looks like that: when I hit the device's sleep button while the camera fragment is working and after that I wake up the device, the application restarts

12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime: FATAL EXCEPTION: main
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime: Process: com.snapsportz.nexus5camera.app, PID: 5081
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime: java.lang.RuntimeException: Unable to pause activity {com.snapsportz.nexus5camera.app/com.snapsportz.handheldcamera.app.CameraActivity}: java.lang.SecurityException: Lacking privileges to access camera service
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3381)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3340)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4047)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.-wrap15(ActivityThread.java)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1350)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:102)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:148)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5417)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:  Caused by: java.lang.SecurityException: Lacking privileges to access camera service
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.utils.CameraBinderDecorator.throwOnError(CameraBinderDecorator.java:108)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.utils.CameraBinderDecorator$CameraBinderDecoratorListener.onAfterInvocation(CameraBinderDecorator.java:73)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.utils.Decorator.invoke(Decorator.java:81)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at java.lang.reflect.Proxy.invoke(Proxy.java:393)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at $Proxy1.cancelRequest(Unknown Source)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.impl.CameraDeviceImpl.stopRepeating(CameraDeviceImpl.java:899)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.impl.CameraCaptureSessionImpl.close(CameraCaptureSessionImpl.java:373)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.snapsportz.handheldcamera.app.Camera2BasicFragment.closeCamera(Camera2BasicFragment.java:899)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.snapsportz.handheldcamera.app.Camera2BasicFragment.onPause(Camera2BasicFragment.java:771)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.Fragment.performPause(Fragment.java:2379)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1019)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1130)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentManagerImpl.dispatchPause(FragmentManager.java:1967)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentController.dispatchPause(FragmentController.java:185)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.Activity.performPause(Activity.java:6346)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1311)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3367)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3340) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4047) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.-wrap15(ActivityThread.java) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1350) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:102) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:148) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5417) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

I believe that it's not a lack of camera permission in manifest file because it is included in it and the app works fine unless I try to wake it up.

I'll be really glad for any hint.

Google's official Sample App for Camera2 has the same issue: https://github.com/googlesamples/android-Camera2Basic/issues/42 — RoundSparrow hilltx, May 25 '16 at 14:01
The comments from Google in the Chromium browser source code imply this is a "undocumented Exception", reference: https://1252-00bb8fd8c843-dot-chromiumcodereview-hr.appspot.com/1910793002/ — RoundSparrow hilltx, May 25 '16 at 14:23

score 2 · Answer 1 · edited Jan 04 '17 at 07:43

2

If you used the Google Camera2Basic Sample App - issue #42 seems to describe the problem. The solution is to review your use of onResume method in your Fragment - and call closeCamera() before you call openCamera() in the onResume(). Seems to fix the problem in my testing of Camera2Basic.

edited Jan 04 '17 at 07:43

Vasily Kabunov

6,511
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answered May 25 '16 at 15:11

RoundSparrow hilltx

799
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score 1 · Answer 2 · answered Oct 21 '16 at 21:26

Usually, It's because you didn't stop the camera device. I solved this in onPause/onResume activity override methods:

@Override
protected void onResume() {
    super.onResume();
    Log.e(TAG, "onResume");
    ...
    openCamera();
    ...
}
@Override
protected void onPause() {
    Log.e(TAG, "onPause");
    closeCamera();
    super.onPause();
}

This worked for me.

Regards.-

Android Camera2 API - lack of privileges on resume

2 Answers2