Fragment_diagramjava

import android.os.Bundle;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.github.mikephil.charting.charts.BarChart;
import com.github.mikephil.charting.components.Description;
import com.github.mikephil.charting.data.BarData;
import com.github.mikephil.charting.data.BarDataSet;
import com.github.mikephil.charting.data.BarEntry;
import com.github.mikephil.charting.utils.ColorTemplate;

import java.util.ArrayList;
import java.util.List;

import androidx.fragment.app.Fragment;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;


public class mtbf3001 extends Fragment {
    private BarChart mBarchart;



    public mtbf3001() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_mtbf3001, container, false);

        mBarchart = view.findViewById(R.id.barChart);

        getDiag1(getArguments().getString("method"));
        return view;
    }
    private void getDiag1(final String method)
    {
        Call<List<diag1>> call = ApiClient.getApiClient().create(ApiInterface.class).getMtbf3001Info();

        call.enqueue(new Callback<List<diag1>>() {
            @Override
            public void onResponse(Call<List<diag1>> call, Response<List<diag1>> response)
            {
                if(response.body()!=null)
                {
                    List<BarEntry> barEntries = new ArrayList<>();
                    for (diag1 diag1 : response.body())
                    {
                        barEntries.add( new BarEntry((diag1.getMonth()), diag1.getHours()));
                    }
                    BarDataSet barDataSet = new BarDataSet(barEntries, "meantime");
                    barDataSet.setColors(ColorTemplate.COLORFUL_COLORS);

                    BarData barData = new BarData(barDataSet);
                    barData.setBarWidth(0.9f);

                    mBarchart.setVisibility(View.VISIBLE);
                    mBarchart.animateY(5000);
                    mBarchart.setData(barData);
                    mBarchart.setFitBars(true);

                    Description description = new Description();
                    description.setText("Mean Time Between Failure");
                    mBarchart.setDescription(description);
                    mBarchart.invalidate();


                }
            }

            @Override
            public void onFailure(Call<List<diag1>> call, Throwable t) {

            }

        });
    }
}