private List<Weaponset> userWeaponsets;

    private Button addButton;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_weaponsetlist);

        addButton = (Button)findViewById(R.id.addButton);

        addButton.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                editWeaponset(null);

            }

        });

    }

    @Override

    public void onResume() {

        super.onResume();

        updateList();

        getListView().setOnItemClickListener(this);

        registerForContextMenu(getListView());

    }

    private List<Map<String, ?>> weaponsetsToMap(List<Weaponset> weaponsets) {

        List<Map<String, ?>> result = new ArrayList<Map<String, ?>>();

        for(Weaponset weaponset : weaponsets) {

            result.add(Collections.singletonMap("txt", weaponset.name));

        }

        return result;

    }

    public void onItemClick(AdapterView<?> adapterView, View v, int position, long arg3) {

        editWeaponset(userWeaponsets.get(position).name);

    }

    @Override

    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuinfo){

        menu.add(ContextMenu.NONE, 0, ContextMenu.NONE, R.string.edit);

        menu.add(ContextMenu.NONE, 1, ContextMenu.NONE, R.string.delete);

    }

    @Override

    public boolean onContextItemSelected(MenuItem item){

        AdapterView.AdapterContextMenuInfo menuInfo = (AdapterContextMenuInfo) item.getMenuInfo();

        int position = menuInfo.position;

        Weaponset weaponset = userWeaponsets.get(position);

        switch(item.getItemId()){

        case 0:

            editWeaponset(weaponset.name);

            return true;

        case 1:

            try {

                Weaponsets.deleteUserWeaponset(this, weaponset.name);

            } catch (IOException e) {

                Toast.makeText(this.getApplicationContext(), R.string.error_missing_sdcard_or_files, Toast.LENGTH_SHORT).show();

            }

            updateList();

            return true;

        }

        return false;

    }

    private void updateList() {

        try {

            userWeaponsets = Weaponsets.loadUserWeaponsets(this);

        } catch (IOException e) {

            Toast.makeText(this, R.string.error_missing_sdcard_or_files, Toast.LENGTH_LONG).show();

            finish();

        }

        Collections.sort(userWeaponsets, Weaponset.NAME_ORDER);

        ListAdapter adapter = new SimpleAdapter(this, weaponsetsToMap(userWeaponsets), android.R.layout.simple_list_item_1, new String[]{"txt"}, new int[]{android.R.id.text1});

        setListAdapter(adapter);

    }

    private void editWeaponset(String weaponsetName) {

        Intent i = new Intent(this, WeaponsetCreatorActivity.class);

        i.putExtra(WeaponsetCreatorActivity.PARAMETER_EXISTING_WEAPONSETNAME, weaponsetName);

        startActivity(i);

    }