java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference

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    java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference

      at android.graphics.Bitmap.createScaledBitmap()
    2. Android Platform
      Bitmap.createScaledBitmap
      1. android.graphics.Bitmap.createScaledBitmap(Bitmap.java:658)
      1 frame
    3. wear.trombettonj.prova2
      AnalogWatchface$Engine.onSurfaceChanged
      1. wear.trombettonj.prova2.AnalogWatchface$Engine.onSurfaceChanged(AnalogWatchface.java:126)
      1 frame
    4. Android Platform
      WallpaperService$IWallpaperEngineWrapper.executeMessage
      1. android.service.wallpaper.WallpaperService$Engine.updateSurface(WallpaperService.java:770)
      2. android.service.wallpaper.WallpaperService$Engine.attach(WallpaperService.java:878)
      3. android.service.wallpaper.WallpaperService$IWallpaperEngineWrapper.executeMessage(WallpaperService.java:1165)
      3 frames
    5. Android
      HandlerCaller$MyHandler.handleMessage
      1. com.android.internal.os.HandlerCaller$MyHandler.handleMessage(HandlerCaller.java:37)
      1 frame
    6. Android Platform
      ActivityThread.main
      1. android.os.Handler.dispatchMessage(Handler.java:102)
      2. android.os.Looper.loop(Looper.java:154)
      3. android.app.ActivityThread.main(ActivityThread.java:5974)
      3 frames
    7. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      1 frame
    8. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:801)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691)
      2 frames