Java 比较json中的值时自动选中复选框

我想检查滚动和滚动检查天数是否相等，然后自动选中该复选框，如果用户需要，也可以取消选中该复选框

1.）检查roll和来自Json的

rollcheck

数据是否相等，然后自动选中

复选框

2.）用户也可以取消选中自动选中的复选框

MainActivity.java

public class MainActivity extends AppCompatActivity {

    Toolbar toolbar;
    FloatingActionButton fab;
    ListView list;
    TextView txt_menu;
    String dipilih;
    private static final String TAG = MainActivity.class.getSimpleName();

    Adapter adapter;
    ProgressDialog pDialog;

    List<Data> itemList = new ArrayList<Data>();


    private static String url = "http://url.php";

    public static final String TAG_NAMA = "nama";
     public static final String TAG_ROLL = "roll";
    public static final String TAG_ROLLCheck = "rollcheck";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        fab     = (FloatingActionButton) findViewById(R.id.fab);
        list    = (ListView) findViewById(R.id.list_menu);

        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String checkbox = "";
                for (Data hold : adapter.getAllData()) {
                    if (hold.isCheckbox()) {
                        checkbox += "\n" + hold.getMenu();
                    }
                }
                if (!checkbox.isEmpty()) {
                    dipilih = checkbox;
                } else {
                    dipilih = "No check box selected";
                }

                formSubmit(dipilih);
            }
        });

        callVolley();

        adapter = new Adapter(this, (ArrayList<Data>) itemList);
        list.setAdapter(adapter);

        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, 
  int position, long l) {
                adapter.setCheckBox(position);
            }
        });

    }

    private void formSubmit(String hasil){
        AlertDialog.Builder dialog = new AlertDialog.Builder(this);
        LayoutInflater inflater = getLayoutInflater();
        View dialogView = inflater.inflate(R.layout.form_submit, null);
        dialog.setView(dialogView);
        dialog.setIcon(R.mipmap.ic_launcher);
        dialog.setTitle("title");
        dialog.setCancelable(true);

        txt_menu = (TextView) dialogView.findViewById(R.id.txt_menu);

        txt_menu.setText(hasil);

        dialog.setNeutralButton("CLOSE", new 
     DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });

        dialog.show();
    }

    private void callVolley(){
        itemList.clear();
        // menapilkan dialog loading
        pDialog = new ProgressDialog(this);
        pDialog.setMessage("Loading...");
        showDialog();

        // membuat request JSON
        JsonArrayRequest jArr = new JsonArrayRequest(url, new 
       Response.Listener<JSONArray>() {
                    @Override
                    public void onResponse(JSONArray response) {
                        Log.d(TAG, response.toString());
                        hideDialog();

                        // Parsing json
                        for (int i = 0; i < response.length(); i++) {
                            try {
                                JSONObject obj = response.getJSONObject(i);

                                Data item = new Data();

                                item.setMenu(obj.getString(TAG_NAMA));

                                 item.setRoll(obj.getString(TAG_ROLL));

          item.setRollCheck(obj.getString(TAG_ROLLCheck));

                                // menambah item ke array
                                itemList.add(item);
                            } catch (JSONException e) {
                                e.printStackTrace();
                            }
                        }

                        // notifikasi adanya perubahan data pada adapter
                        adapter.notifyDataSetChanged();
                    }
                }, new Response.ErrorListener() {

            @Override
            public void onErrorResponse(VolleyError error) {
                VolleyLog.d(TAG, "Error: " + error.getMessage());
                hideDialog();
            }
        });

        // menambah request ke request queue
        AppController.getInstance().addToRequestQueue(jArr);
    }

    private void showDialog() {
        if (!pDialog.isShowing())
            pDialog.show();
    }

    private void hideDialog() {
        if (pDialog.isShowing())
            pDialog.dismiss();
    }

}

public class Adapter extends BaseAdapter {

    private Context activity;
    private ArrayList<Data> data;
    private static LayoutInflater inflater = null;
    private View vi;
    private ViewHolder viewHolder;

    public Adapter(Context context, ArrayList<Data> items) {
        this.activity = context;
        this.data = items;
        inflater = 
 (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public int getCount() {
        return data.size();
    }

    @Override
    public Object getItem(int i) {
        return i;
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(int position, View view, ViewGroup viewGroup) {
        vi = view;
        final int pos = position;
        Data items = data.get(pos);

        if(view == null) {
            vi = inflater.inflate(R.layout.list_row, null);
            viewHolder = new ViewHolder();
            viewHolder.checkBox = (CheckBox) vi.findViewById(R.id.cb);
            viewHolder.menu = (TextView) vi.findViewById(R.id.nama_menu);
            viewHolder.roll = (TextView) vi.findViewById(R.id.roll);
            vi.setTag(viewHolder);
        }else {
            viewHolder = (ViewHolder) view.getTag();
            viewHolder.menu.setText(items.getMenu());
            viewHolder.roll.setText(items.getRoll());
        }

        if(items.isCheckbox()){
            viewHolder.checkBox.setChecked(true);
        } else {
            viewHolder.checkBox.setChecked(false);
        }

        return vi;
    }

    public ArrayList<Data> getAllData(){
        return data;
    }

    public void setCheckBox(int position){
        Data items = data.get(position);
        items.setCheckbox(!items.isCheckbox());
        notifyDataSetChanged();
    }

    public class ViewHolder{
        TextView roll;
        TextView menu;
        CheckBox checkBox;
    }
 }

public class Data {
    private String roll;
    private String menu;
    private boolean check;
    private String roll_check;
    public Data() {}

    public Data(String roll,String menu, boolean check,String roll_check) {
        this.roll=roll;
        this.menu = menu;
        this.check = check;
        this.roll_check = roll_check;
    }

    public String getRoll() {
        return roll;
    }

    public void setRoll(String roll) {
        this.roll = roll;
    }

    public String getRollCheck() {
        return roll_check;
    }

    public void setRollCheck(String roll_check) {
        this.roll_check = roll_check;
    }

 public String getMenu() {
        return menu;
    }

    public void setMenu(String menu) {
        this.menu = menu;
    }

    public boolean isCheckbox() {
        return check;
    }

    public void setCheckbox(boolean check) {
        this.check = check;
    }
}

请注意这个问题请注意这个问题