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Attempt to invoke interface method 'void de.tuhh.et5.tills.biocontrol.activity.BLEListFragment$OnBLEDeviceSelectedListener.OnBLEDeviceSelected(android.bluetooth.BluetoothDevice)' on a null object reference at de.tuhh.et5.tills.biocontrol.activity.BLEListFragment.onListItemClick(BLEListFragment.java:92)
java.lang.NullPointerException: Attempt to invoke interface method 'void de.tuhh.et5.tills.biocontrol.activity.BLEListFragment$OnBLEDeviceSelectedListener.OnBLEDeviceSelected(android.bluetooth.BluetoothDevice)' on a null object reference                                                                                    at de.tuhh.et5.tills.biocontrol.activity.BLEListFragment.onListItemClick(BLEListFragment.java:92)	at android.app.ListFragment$2.onItemClick(ListFragment.java:160)	at android.widget.AdapterView.performItemClick(AdapterView.java:305)	at android.widget.AbsListView.performItemClick(AbsListView.java:1185)	at android.widget.AbsListView$PerformClick.run(AbsListView.java:3222)	at android.widget.AbsListView$3.run(AbsListView.java:4138)	at android.os.Handler.handleCallback(Handler.java:815)	at android.os.Handler.dispatchMessage(Handler.java:104)	at android.os.Looper.loop(Looper.java:194)	at android.app.ActivityThread.main(ActivityThread.java:5568)	at java.lang.reflect.Method.invoke(Native Method)	at java.lang.reflect.Method.invoke(Method.java:372)