Failed to open camera in Marshmallow

I have a problem when I run

IntentIntegrator.forSupportFragment(this).setOrientationLocked(true).setBeepEnabled(true).initiateScan();

I tried to run the same application in Lollipop, where it works flawlessly, and in Marshmallow, where I get an alert: “Sorry, the Android camera encountered a problem, etc. etc.”.

I’m running on the 3.0.3 version, although it happens on the 3.0.1 and 3.0.2 as well. It happens on both my Nexus 5 and the emulator.

That’s the stacktrace:

D/CameraPreview: resume()
D/CameraInstance: Opening camera
E/Surface: getSlotFromBufferLocked: unknown buffer: 0xb3fd4140
W/CameraBase: An error occurred while connecting to camera: 0
E/CameraInstance: Failed to open camera
E/CameraInstance: java.lang.RuntimeException: Fail to connect to camera service
E/CameraInstance:     at android.hardware.Camera.<init>(Camera.java:495)
E/CameraInstance:     at android.hardware.Camera.open(Camera.java:341)
E/CameraInstance:     at com.google.zxing.client.android.camera.open.OpenCameraInterface.open(OpenCameraInterface.java:83)
E/CameraInstance:     at com.journeyapps.barcodescanner.camera.CameraManager.open(CameraManager.java:121)
E/CameraInstance:     at com.journeyapps.barcodescanner.camera.CameraInstance$3.run(CameraInstance.java:158)
E/CameraInstance:     at android.os.Handler.handleCallback(Handler.java:739)
E/CameraInstance:     at android.os.Handler.dispatchMessage(Handler.java:95)
E/CameraInstance:     at android.os.Looper.loop(Looper.java:148)
E/CameraInstance:     at android.os.HandlerThread.run(HandlerThread.java:61)
W/EGL_emulation: eglSurfaceAttrib not implemented
W/OpenGLRenderer: Failed to set EGL_SWAP_BEHAVIOR on surface 0xabebff00, error=EGL_SUCCESS
D/CameraInstance: Configuring camera
W/CameraManager: Failed to set rotation.
W/CameraManager: Camera rejected even safe-mode parameters! No configuration
E/CameraInstance: Failed to configure camera
E/CameraInstance: java.lang.NullPointerException: Attempt to invoke virtual method 'android.hardware.Camera$Parameters android.hardware.Camera.getParameters()' on a null object reference
E/CameraInstance:     at com.journeyapps.barcodescanner.camera.CameraManager.setParameters(CameraManager.java:359)
E/CameraInstance:     at com.journeyapps.barcodescanner.camera.CameraManager.configure(CameraManager.java:139)
E/CameraInstance:     at com.journeyapps.barcodescanner.camera.CameraInstance$4.run(CameraInstance.java:171)
E/CameraInstance:     at android.os.Handler.handleCallback(Handler.java:739)
E/CameraInstance:     at android.os.Handler.dispatchMessage(Handler.java:95)
E/CameraInstance:     at android.os.Looper.loop(Looper.java:148)
E/CameraInstance:     at android.os.HandlerThread.run(HandlerThread.java:61)
D/CameraPreview: pause()
D/CameraInstance: Closing camera

[wseemann]

These changes don’t appear to be fool proof. When using the latest version if you

1.) Grant permission to the camera and open a CaptureActivity 2.) Minimize the app, turn the camera permission off 3.) Return to the app

This will produce a crash. There should be a check when resuming the camera to ensure the permission has been granted.

[fahimk]

If you are compiling against sdk 23, you need to ask for camera permissions with the new permissions api before the scanner is launched