TrendsMainFragment [with Bars]

package com.example.iptea.hearingclub.fragments;


import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.support.v4.app.Fragment;
import android.widget.Button;

import com.example.iptea.hearingclub.App;
import com.example.iptea.hearingclub.HearingResults;
import com.example.iptea.hearingclub.HourAxisValueFormatter;
import com.example.iptea.hearingclub.MyMarkerView;
import com.example.iptea.hearingclub.R;
import com.example.iptea.hearingclub.RealmHelper;
import com.example.iptea.hearingclub.activities.MainActivity;
import com.github.mikephil.charting.charts.BarChart;
import com.github.mikephil.charting.components.AxisBase;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.data.BarData;
import com.github.mikephil.charting.data.realm.implementation.RealmBarDataSet;
import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;

import java.util.ArrayList;

import io.realm.Realm;
import io.realm.RealmResults;

/**
 * A simple {@link Fragment} subclass.
 */
public class TrendsMainFragment extends Fragment {

    private Button[] btn = new Button[4];
    private Button btn_unfocus;
    private int[] btn_id = {R.id.btn0, R.id.btn1, R.id.btn2, R.id.btn3};
    private long referenceTimestamp;
    private Realm realm;
    //HearingResults hearingAllResults;

    public TrendsMainFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        final View root = inflater.inflate(R.layout.fragment_trends_main, container, false);

        realm = Realm.getDefaultInstance();


        BarChart barChart = root.findViewById(R.id.barchart1);

/*        RealmResults<Score> results = realm.where(Score.class).findAll();
        RealmBarDataSet<Score> dataSet = new RealmBarDataSet<Score>(results, "scoreNr", "totalScore");*/



        Bundle bundle=getArguments();

            //here is your list array



        RealmResults<HearingResults> allHearingResults = realm.where(HearingResults.class).findAllAsync();

        referenceTimestamp = (allHearingResults.min("timeStampDate")).longValue();//0; //bundle.getLong("ReferenceTimeStamp");
        Log.d("ADebugTag", "Value: " + Long.toString(referenceTimestamp));
        HourAxisValueFormatter xAxisFormatter = new HourAxisValueFormatter(referenceTimestamp);

        XAxis xAxis = barChart.getXAxis();
        xAxis.setValueFormatter(xAxisFormatter);


        //MyMarkerView myMarkerView= new MyMarkerView(getContext(), R.layout.custom_marker_view, referenceTimestamp);
        //mChart.setMarkerView(myMarkerView);

        RealmBarDataSet<HearingResults> dataSet = new RealmBarDataSet<HearingResults>(allHearingResults, "timeStampDate", "minFrequency");

        ArrayList<IBarDataSet> dataSetList = new ArrayList<IBarDataSet>();
        dataSetList.add(dataSet); // add the dataset





        //long min = (long) allHearingResults.min("timeStampDate");
/*        RealmResults<HearingResults> someResult = realm.where(HearingResults.class).findAllSorted("timeStampDate");
        float min = someResult.min("timeStampDate");*/

// create a data object with the dataset list
        BarData data = new BarData(dataSetList);
        barChart.setData(data);
        barChart.invalidate(); // refresh
// additional data styling...

















        //RealmResults<HearingResults> hearingResults = realm.where(HearingResults.class).findAllAsync();

        for(int i = 0; i < btn.length; i++) {
            btn[i] = root.findViewById(btn_id[i]);
            btn[i].setBackgroundColor(Color.rgb(207, 207, 207));
        }

        btn_unfocus = btn[0];

        for(int i = 0; i < btn.length; i++) {
            btn[i].setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    // Your Code Lines

                    switch (v.getId()) {
                        case R.id.btn0:
                            setFocus(btn_unfocus, btn[0]);
                            break;

                        case R.id.btn1:
                            setFocus(btn_unfocus, btn[1]);
                            break;

                        case R.id.btn2:
                            setFocus(btn_unfocus, btn[2]);
                            break;

                        case R.id.btn3:
                            setFocus(btn_unfocus, btn[3]);
                            break;
                    }
                }
            });
        }
            //btn[i].setOnClickListener((View.OnClickListener) getActivity());


        return root;
    }



    private void setFocus(Button btn_unfocus, Button btn_focus){
        btn_unfocus.setTextColor(Color.rgb(49, 50, 51));
        btn_unfocus.setBackgroundColor(Color.rgb(207, 207, 207));
        btn_focus.setTextColor(Color.rgb(255, 255, 255));
        btn_focus.setBackgroundColor(Color.rgb(3, 106, 150));
        this.btn_unfocus = btn_focus;
    }
}