java.lang.RuntimeException: Fail to connect to camera service at android.hardware.Camera.(Camera.java:531) at android.hardware.Camera.open(Camera.java:377) at n8.a.j(Unknown Source:32) at n8.a.d(Unknown Source:9) at com.entitcs.office_attendance.camera.CameraSourcePreview.f(Unknown Source:29) at com.entitcs.office_attendance.camera.CameraSourcePreview.onLayout(Unknown Source:28) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1083) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635) at android.widget.LinearLayout.onLayout(LinearLayout.java:1544) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1083) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635) at android.widget.LinearLayout.onLayout(LinearLayout.java:1544) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635) at android.widget.LinearLayout.onLayout(LinearLayout.java:1544) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at com.android.internal.policy.DecorView.onLayout(DecorView.java:762) at android.view.View.layout(View.java:19806) at android.view.ViewGroup.layout(ViewGroup.java:6150) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2605) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2310) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1446) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7014) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:916) at android.view.Choreographer.doCallbacks(Choreographer.java:728) at android.view.Choreographer.doFrame(Choreographer.java:660) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:902) at android.os.Handler.handleCallback(Handler.java:790) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6523) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:857)