java.lang.NullPointerException

Attempt to invoke virtual method 'android.app.Fragment android.app.FragmentManager.findFragmentById(int)' on a null object reference

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Solutions on the web21085

  • Attempt to invoke virtual method 'android.app.Fragment android.app.FragmentManager.findFragmentById(int)' on a null object reference
  • Attempt to invoke virtual method 'void android.graphics.drawable.Drawable.setBounds(int, int, int, int)' on a null object reference
  • Attempt to invoke virtual method 'void android.graphics.drawable.Drawable.setBounds(int, int, int, int)' on a null object reference
  • Stack trace

    • java.lang.NullPointerException: Attempt to invoke virtual method 'android.app.Fragment android.app.FragmentManager.findFragmentById(int)' on a null object reference at com.gpstracker.viktor.gpstracker2.Home_Fragment.<init>(Home_Fragment.java:82) at com.gpstracker.viktor.gpstracker2.GPSTracker2.selectItemFromDrawer(GPSTracker2.java:105) at com.gpstracker.viktor.gpstracker2.GPSTracker2.access$000(GPSTracker2.java:28) at com.gpstracker.viktor.gpstracker2.GPSTracker2$1.onItemClick(GPSTracker2.java:67) at android.widget.AdapterView.performItemClick(AdapterView.java:310) at android.widget.AbsListView.performItemClick(AbsListView.java:1145) at android.widget.AbsListView$PerformClick.run(AbsListView.java:3066) at android.widget.AbsListView$3.run(AbsListView.java:3903) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5461) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

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