ダイナミックデータを使用したLineChartのプロット？

Question

これは、私がグラフで作業していて初めてのことです。静的線グラフをプロットすることはできますが、ダイナミックデータで線グラフをプロットすることはできません。チャートは、動的データ？

fragment_dashboard

 <com.github.mikephil.charting.charts.LineChart 
      android:id="@+id/chart1" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" /> 

ダッシュボード

public class Dashboard extends Fragment { 

    ListView listViewNotice, listviewpendingbills; 
    String Navigation_URL = "http://192.168.100.5:84/api/academics/getNotices"; 
    String Navigation_URL_BIlls = "http://192.168.100.5:84/Api/financeApi/getAllFees"; 
    String Navigation_URL_CHART = "http://192.168.100.5:84/api/academics/getSingleStudentsMarks"; 

    String access_token; 
    String Notice, BillNumber, Status, AmountPaid, ReceiptIssueDate; 
    String master_id; 
    TextView pendingbills, NoNotice; 
    BarChart lineChart; 


    LineChart chart; 


    private static final String TAG = "Test"; 


    ArrayList<Entry> entries = new ArrayList<>(); 
    LineDataSet set = new LineDataSet(entries, "Wow"); 
    LineData data = new LineData(set); 
    ArrayList<Object> labels = new ArrayList<>(); 


    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     // Inflate the layout for this fragment 
     View view = inflater.inflate(R.layout.fragment_dashboard, container, false); 
     // getActivity().setTitle("St. Xavier's High School"); 
     setHasOptionsMenu(true); 

     listViewNotice = (ListView) view.findViewById(R.id.list_student_notice_dashboard); 
     listviewpendingbills = (ListView) view.findViewById(R.id.student_dashboard_pendingbills); 
     pendingbills = (TextView) view.findViewById(R.id.textpendingbills); 
     NoNotice = (TextView) view.findViewById(R.id.textnoticedashboard); 
     // lineChart = (BarChart) view.findViewById(R.id.chart1); 
     chart = (LineChart) view.findViewById(R.id.chart1); 


     SessionManagement session = new SessionManagement(getContext()); 
     session.checkLogin(); 
     access_token = session.getAccesstToken(); 
     master_id = session.getMasterId(); 
     makeJsonObjectRequest(); 
     makeJsonObjectRequestBills(); 
     makeJsonObjectRequestGraph(); 
     return view; 
    } 
    private void makeJsonObjectRequestGraph() { 

     RequestQueue requestQueue = Volley.newRequestQueue(getContext()); 
     String URL1 = Navigation_URL_CHART + "?StdID=" + master_id; 
     StringRequest stringRequest = new StringRequest(Request.Method.GET, URL1, 
       new Response.Listener<String>() { 
        @Override 
        public void onResponse(String response) { 
         try { 


          JSONArray jArray = new JSONArray(response); 
          for (int i = 0; i < jArray.length(); i++) { 
           JSONObject jsonObject = jArray.getJSONObject(i); 
           String Marks = jsonObject.getString("Marks"); 
           String examDescription = jsonObject.getString("examDescription"); 

           if (examDescription == "First Term") { 

            entries.add(new BarEntry(Float.parseFloat(Marks), i)); 
           } 


          } 


          chart.notifyDataSetChanged(); 
          chart.invalidate(); 
          set = new LineDataSet(entries, "Wow"); 
          //data = new LineData(labels,set); 
          chart.setData(data); 

          setListViewHeightBasedOnChildren(listviewpendingbills); 


         } catch (JSONException e) { 
          Toast.makeText(getContext(), "Fetch failed!", Toast.LENGTH_SHORT).show(); 
          e.printStackTrace(); 
         } 
        } 

       }, new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 
       Toast.makeText(getContext(), error.toString(), LENGTH_LONG).show(); 
      } 
     }) { 

      @Override 
      public Map<String, String> getHeaders() throws AuthFailureError { 
       Map<String, String> headers = new HashMap<String, String>(); 
       headers.put("Authorization", "Bearer " + access_token); 
       headers.put("Content-Type", "application/x-www-form-urlencoded"); 
       return headers; 
      } 
/* 
      @Override 
      protected Map<String, String> getParams() throws com.android.volley.AuthFailureError { 
       Map<String, String> map = new HashMap<String, String>(); 

       map.put("id", master_id); 
       map.put("accessID", accessID); 
       map.put("currentUser", master_id); 
       return map; 

      } */ 
     }; 


     requestQueue.add(stringRequest); 

    } 


    @Override 
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 
     // TODO Auto-generated method stub 
     super.onCreateOptionsMenu(menu, inflater); 
     inflater.inflate(R.menu.dashboard, menu); 
    } 


    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // handle item selection 
     switch (item.getItemId()) { 
      case R.id.action_settings: 
       // do s.th. 
       return true; 
      default: 
       return super.onOptionsItemSelected(item); 
     } 
    } 

    public static void setListViewHeightBasedOnChildren(ListView listView) { 
     ListAdapter listAdapter = listView.getAdapter(); 
     if (listAdapter == null) { 
      // pre-condition 
      return; 
     } 

     int totalHeight = 0; 
     int desiredWidth = View.MeasureSpec.makeMeasureSpec(listView.getWidth(), View.MeasureSpec.AT_MOST); 
     for (int i = 0; i < listAdapter.getCount(); i++) { 
      View listItem = listAdapter.getView(i, null, listView); 
      listItem.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED); 
      totalHeight += listItem.getMeasuredHeight(); 
     } 

     ViewGroup.LayoutParams params = listView.getLayoutParams(); 
     params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1)); 
     listView.setLayoutParams(params); 
     listView.requestLayout(); 
    } 
} 

JSON

[ 
    { 
    "CLASSNO": "8", 
    "CLASS_ID": 8, 
    "CourseID": 1012, 
    "Marks": 80, 
    "Sno": 1, 
    "StdID": 2, 
    "TermID": 6014, 
    "CourseName": "Math", 
    "Terminal_FM": 100, 
    "Terminal_PM": 40, 
    "UT_FM": 50, 
    "UT_PM": 20, 
    "examDescription": "First Term", 
    "type": "Terminal", 
    "NAME": "Oren Oneill" 
    }, 
    { 
    "CLASSNO": "8", 
    "CLASS_ID": 8, 
    "CourseID": 1013, 
    "Marks": 80, 
    "Sno": 2, 
    "StdID": 2, 
    "TermID": 6014, 
    "CourseName": "Nepali", 
    "Terminal_FM": 100, 
    "Terminal_PM": 40, 
    "UT_FM": 50, 
    "UT_PM": 20, 
    "examDescription": "First Term", 
    "type": "Terminal", 
    "NAME": "Oren Oneill" 
    } 
] 

MPAndroidChartを使用してAndroidでダイナミックデータをプロットするにはどうすればよいですか？

Answer 1

ループのため、

 chart.notifyDataSetChanged(); 
    chart.invalidate(); 
    set = new LineDataSet(entries, "Wow"); 
    data = new LineData(labels,set); 
    chart.setData(data);