java.lang.RuntimeException: Unable to start service com.hyechon.etrackermv.ServiceClass@7566889 with Intent { cmp=com.hyechon.etrackermv/.ServiceClass }: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.hyechon.etrackermv.camera.CameraSourcePreview.start(com.google.android.gms.vision.CameraSource)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void com.hyechon.etrackermv.camera.CameraSourcePreview.start(com.google.android.gms.vision.CameraSource)' on a null object reference

      at com.hyechon.etrackermv.ServiceClass.startCameraSource()
    2. com.hyechon.etrackermv
      ServiceClass.onStartCommand
      1. com.hyechon.etrackermv.ServiceClass.startCameraSource(ServiceClass.java:255)
      2. com.hyechon.etrackermv.ServiceClass.onStartCommand(ServiceClass.java:136)
      2 frames
    3. Android Platform
      ActivityThread.handleServiceArgs
      1. android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4062)
      1 frame