java.lang.NullPointerException: Attempt to invoke virtual method 'void java.io.RandomAccessFile.close()' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void java.io.RandomAccessFile.close()' on a null object reference

      at org.mapsforge.map.reader.MapFile.closeFile()
    2. org.mapsforge.map
      MapFile.<init>
      1. org.mapsforge.map.reader.MapFile.closeFile(MapFile.java:288)
      2. org.mapsforge.map.reader.MapFile.<init>(MapFile.java:243)
      3. org.mapsforge.map.reader.MapFile.<init>(MapFile.java:0)
      3 frames
    3. com.example.lifemakers
      MainActivity.onCreate
      1. com.example.lifemakers.mapsforge.MainActivity.onCreate(MainActivity.java:46)
      1 frame
    4. Android Platform
      ActivityThread.handleLaunchActivity
      1. android.app.Activity.performCreate(Activity.java:6237)
      2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
      3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
      4. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
      4 frames