java.lang.RuntimeException: getParameters failed (empty parameters)

[ligi]

Wast just opening the app again as I was setting up a pretix installation. Unfortunately the first time opening the app crashed and even worse I cannot reproduce this anymore currently. Opening the app after this and until now worked like a charm.

11-02 21:29:24.176   515  2358 W QCamera2Factory: getCameraInfo: E, camera_id = 0
11-02 21:29:24.176   515  2358 I QCamera2HWI: getFlashInfo cameraId:0 hasFlash:1
11-02 21:29:24.176   515  2358 I QCamera2HWI: getCapabilities id:0 hasFlash:1
11-02 21:29:24.176   515  2358 W QCamera2HWI: __dbg: info->orientation : 90 rc = 0
11-02 21:29:24.176   515  2358 W QCamera2Factory: getCameraInfo: X
11-02 21:29:24.176   515  2358 W QCamera2Factory: cameraDeviceOpen : E
11-02 21:29:24.176 13358 13358 E AndroidRuntime: FATAL EXCEPTION: main
11-02 21:29:24.176 13358 13358 E AndroidRuntime: Process: eu.pretix.pretixdroid.debug, PID: 13358
11-02 21:29:24.176 13358 13358 E AndroidRuntime: java.lang.RuntimeException: getParameters failed (empty parameters)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at android.hardware.Camera.native_getParameters(Native Method)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at android.hardware.Camera.getParameters(Camera.java:1996)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at me.dm7.barcodescanner.core.CameraUtils.isFlashSupported(CameraUtils.java:47)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at me.dm7.barcodescanner.core.BarcodeScannerView.setFlash(BarcodeScannerView.java:153)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at me.dm7.barcodescanner.core.BarcodeScannerView.setupCameraPreview(BarcodeScannerView.java:90)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at me.dm7.barcodescanner.core.CameraHandlerThread$1$1.run(CameraHandlerThread.java:31)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at android.os.Handler.handleCallback(Handler.java:739)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at android.os.Handler.dispatchMessage(Handler.java:95)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at android.os.Looper.loop(Looper.java:158)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at android.app.ActivityThread.main(ActivityThread.java:7225)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at java.lang.reflect.Method.invoke(Native Method)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
11-02 21:29:24.176 13358 13358 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
11-02 21:29:24.176   515  2358 I QCamera2HWI: [KPI Perf] openCamera: E
11-02 21:29:24.176   515  2358 W QCamera2HWI: [CORELOCK_DBG] perf_lock_acq was called by openCamera
11-02 21:29:24.176   515  2358 W QCamera2HWI: [CORELOCK_DBG] perf_lock_acq limit max clock for protection peak current!!. mPerfMaxLockHandle = 40
11-02 21:29:24.176   515  2358 I QCamera2HWI: getFlashInfo cameraId:0 hasFlash:1

[ligi]

just found dm77/barcodescanner#235 which might be the source of this

[jfwiebe]

You can reproduce the error by removing the camera permisson again and than restart the app.

[raphaelm]

Good catch! So we probably need to add

• more permission checks
• find out why it occured for @ligi

[ligi]

github.com/hotchemi/PermissionsDispatcher is really nice to handle runtime-permissions

[deanveggy]

had same issue. fixed by explicitly requesting camera permission before switching to the page containing the code that uses the camera. in my case zxing scanner for xamarin. It's a messy business due to different android versions so i used of a great NuGet plugin (helper). PlugIn.Permissions (https://www.nuget.org/packages/Plugin.Permissions/).

[raphaelm]

e9eabc6 might fix this, let's see