CoreMotion apparently calls UI API from background thread











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At some point in my app I am initializing a CMMotionManager. This happens on the main thread. After doing so, the Xcode 10 main thread checker indicates that



-[UIApplication applicationState] 


is not being called from the main thread. Indeed it is coming from



Thread name: com.apple.CoreMotion.MotionThread


Since this is Apple's private framework it appears to me that I just have to wait until this issue is fixed on Apple's side. Am I correct and/or is there any way to remedy this issue without switching off the main thread checker?










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    up vote
    4
    down vote

    favorite












    At some point in my app I am initializing a CMMotionManager. This happens on the main thread. After doing so, the Xcode 10 main thread checker indicates that



    -[UIApplication applicationState] 


    is not being called from the main thread. Indeed it is coming from



    Thread name: com.apple.CoreMotion.MotionThread


    Since this is Apple's private framework it appears to me that I just have to wait until this issue is fixed on Apple's side. Am I correct and/or is there any way to remedy this issue without switching off the main thread checker?










    share|improve this question
























      up vote
      4
      down vote

      favorite









      up vote
      4
      down vote

      favorite











      At some point in my app I am initializing a CMMotionManager. This happens on the main thread. After doing so, the Xcode 10 main thread checker indicates that



      -[UIApplication applicationState] 


      is not being called from the main thread. Indeed it is coming from



      Thread name: com.apple.CoreMotion.MotionThread


      Since this is Apple's private framework it appears to me that I just have to wait until this issue is fixed on Apple's side. Am I correct and/or is there any way to remedy this issue without switching off the main thread checker?










      share|improve this question













      At some point in my app I am initializing a CMMotionManager. This happens on the main thread. After doing so, the Xcode 10 main thread checker indicates that



      -[UIApplication applicationState] 


      is not being called from the main thread. Indeed it is coming from



      Thread name: com.apple.CoreMotion.MotionThread


      Since this is Apple's private framework it appears to me that I just have to wait until this issue is fixed on Apple's side. Am I correct and/or is there any way to remedy this issue without switching off the main thread checker?







      xcode uikit xcode10 core-motion






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      asked Nov 20 at 17:35









      ff10

      1,6012142




      1,6012142
























          1 Answer
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          up vote
          1
          down vote



          accepted










          Its currently a bug in the API, something is triggering in background thread.



          i could stop it with



          lazy var motionManager = CMMotionManager()


          see also https://github.com/JonasGessner/JGProgressHUD/issues/98, but there is no solution right now.






          share|improve this answer























          • It did'nt work for me.
            – Shota Nakagami
            Dec 12 at 11:04










          • The lazy call will only postpone the exception.
            – ff10
            Dec 12 at 12:25











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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          1
          down vote



          accepted










          Its currently a bug in the API, something is triggering in background thread.



          i could stop it with



          lazy var motionManager = CMMotionManager()


          see also https://github.com/JonasGessner/JGProgressHUD/issues/98, but there is no solution right now.






          share|improve this answer























          • It did'nt work for me.
            – Shota Nakagami
            Dec 12 at 11:04










          • The lazy call will only postpone the exception.
            – ff10
            Dec 12 at 12:25















          up vote
          1
          down vote



          accepted










          Its currently a bug in the API, something is triggering in background thread.



          i could stop it with



          lazy var motionManager = CMMotionManager()


          see also https://github.com/JonasGessner/JGProgressHUD/issues/98, but there is no solution right now.






          share|improve this answer























          • It did'nt work for me.
            – Shota Nakagami
            Dec 12 at 11:04










          • The lazy call will only postpone the exception.
            – ff10
            Dec 12 at 12:25













          up vote
          1
          down vote



          accepted







          up vote
          1
          down vote



          accepted






          Its currently a bug in the API, something is triggering in background thread.



          i could stop it with



          lazy var motionManager = CMMotionManager()


          see also https://github.com/JonasGessner/JGProgressHUD/issues/98, but there is no solution right now.






          share|improve this answer














          Its currently a bug in the API, something is triggering in background thread.



          i could stop it with



          lazy var motionManager = CMMotionManager()


          see also https://github.com/JonasGessner/JGProgressHUD/issues/98, but there is no solution right now.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Dec 7 at 9:37

























          answered Dec 7 at 0:54









          Skyborg

          19627




          19627












          • It did'nt work for me.
            – Shota Nakagami
            Dec 12 at 11:04










          • The lazy call will only postpone the exception.
            – ff10
            Dec 12 at 12:25


















          • It did'nt work for me.
            – Shota Nakagami
            Dec 12 at 11:04










          • The lazy call will only postpone the exception.
            – ff10
            Dec 12 at 12:25
















          It did'nt work for me.
          – Shota Nakagami
          Dec 12 at 11:04




          It did'nt work for me.
          – Shota Nakagami
          Dec 12 at 11:04












          The lazy call will only postpone the exception.
          – ff10
          Dec 12 at 12:25




          The lazy call will only postpone the exception.
          – ff10
          Dec 12 at 12:25


















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