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  • How to Resolve AppActivity Crash Issue On This Code and Barchart Not See?

    @nagendrayadav0786
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    Need a help in appactivity crash issue My code is:

    1. package wallet.ask.com.abcd;
    2. import android.app.ProgressDialog;
    3. import android.graphics.Color;
    4. import android.os.AsyncTask;
    5. import android.support.v7.app.AppCompatActivity;
    6. import android.os.Bundle;
    7. import android.util.Log;
    8. import com.github.mikephil.charting.charts.BarChart;
    9. import com.github.mikephil.charting.data.BarData;
    10. import com.github.mikephil.charting.data.BarDataSet;
    11. import com.github.mikephil.charting.data.BarEntry;
    12. import com.github.mikephil.charting.utils.ColorTemplate;
    13. import org.json.JSONArray;
    14. import org.json.JSONObject;
    15. import java.util.ArrayList;
    16. import java.util.List;
    17.  
    18. public class MainActivity extends AppCompatActivity {
    19. String[] stringArray1, stringArray2;
    20. ArrayList<String> arrayListString1, arrayListString2;
    21. List<ChartPojo> list;
    22.  ChartPojo object;
    23. ArrayList<BarEntry> valueSet1 = new ArrayList<>();
    24. @Override
    25.     protected void onCreate(Bundle savedInstanceState) {
    26.         super.onCreate(savedInstanceState);
    27.         setContentView(R.layout.activity_main);
    28.  
    29.         list = new ArrayList<ChartPojo>();
    30.  
    31.         new LoadDataAsyncTask().execute();
    32.  
    33.         arrayListString1 = new ArrayList<String>();
    34.         arrayListString2 = new ArrayList<String>();
    35.  
    36.         stringArray1 = new String[arrayListString1.size()];
    37.         stringArray2 = new String[arrayListString2.size()];
    38.  
    39.  
    40.         BarChart chart = (BarChart) findViewById(R.id.chart);
    41. BarData data = new BarData(arrayListString1, getDataSet());
    42.  
    43.         chart.setData(data);
    44.         chart.setDescription("My Chart");
    45.         chart.animateXY(2000, 2000);
    46.         chart.invalidate();
    47.  
    48.     }
    49.  private ArrayList<BarDataSet> getDataSet() {
    50.         ArrayList<BarDataSet> dataSets = null;
    51.  
    52. BarEntry v1e1 = new BarEntry(new float[stringArray2.length], stringArray1.length); // Jan
    53.         valueSet1.add(v1e1);
    54.  
    55. BarDataSet barDataSet1 = new BarDataSet(valueSet1, "Brand 1");
    56.         barDataSet1.setColor(Color.rgb(0, 155, 0));
    57.  
    58.         dataSets = new ArrayList<>();
    59.         dataSets.add(barDataSet1);
    60.         return dataSets;
    61. }
    62. private ArrayList<String> getXAxisValues() {
    63.         ArrayList<String> xAxis = new ArrayList<>();
    64.         xAxis.add("JAN");
    65.         xAxis.add("FEB");
    66.         xAxis.add("MAR");
    67.         xAxis.add("APR");
    68.         xAxis.add("MAY");
    69.         xAxis.add("JUN");
    70.         return xAxis;
    71.     }
    72. class LoadDataAsyncTask extends AsyncTask<String, String, String> {
    73.         private ProgressDialog dialog;
    74.         String response = "";
    75.         private JSONObject res;
    76.         String runtime;
    77.  
    78.         @Override
    79.         protected void onPreExecute() {
    80.             super.onPreExecute();
    81.             dialog = new ProgressDialog(MainActivity.this);
    82.             dialog.setMessage("Please Wait..");
    83.             dialog.setCancelable(false);
    84.             dialog.show();
    85.         }
    86.  
    87.         @Override
    88.         protected String doInBackground(String... params) {
    89.             try {
    90.  
    91.                 JSONObject vehicle_json = new JSONObject();
    92.  
    93.                 vehicle_json.put("pAccountId", "2");
    94.                 vehicle_json.put("unitId", "160323132");
    95.                 vehicle_json.put("startDate", "2017-07-22 11:23:12");
    96.                 vehicle_json.put("endDate", "2017-07-29 11:23:12");
    97.                 //  vehicle_json.put("minSpeed",speed);
    98. //                Log.d("stopstop123456", AccountId + " " + unitId + " " + fromDate + toDate);
    99.  
    100.  
    101.                 res = CustomHttpClient.postJsonObject("http://", vehicle_json, MainActivity.this);
    102.  
    103.  
    104.                 String resData = res.getString("ResponseData");
    105.                 Log.d("stopstop12345", resData);
    106. //                JSONObject jres = new JSONObject(resData);
    107.  
    108.                 JSONArray array1 = new JSONArray(resData);
    109.                 //JSONArray array=new JSONArray(array1.get(0).toString());
    110.                 //JSONObject jobj=array1.get(0);
    111.                 JSONArray array = new JSONArray(array1.get(0).toString());
    112.  
    113.                 for (int i = 0; i < array.length(); i++) {
    114.                     JSONObject jsonVehicleObj = new JSONObject(array.get(i).toString());
    115.  
    116.                     ChartPojo p = new ChartPojo();
    117.  
    118.                     p.setStrDate(jsonVehicleObj.getString("date"));
    119.                     p.setStrDistance(jsonVehicleObj.getString("distance"));
    120.                     p.setStrRunTime(jsonVehicleObj.getString("run_time"));
    121.  
    122.                     list.add(p);
    123. }
    124.  
    125.             } catch (Exception e) {
    126.                 Log.d("errorrrr", e.toString());
    127.             }
    128. for (int j = 0; j < list.size(); j++) {
    129.  
    130.                 object = list.get(j);
    131. arrayListString1.add(object.getStrDate());
    132.  stringArray2 = arrayListString1.toArray(stringArray1);
    133.  
    134.    arrayListString2.add(object.getStrRunTime());
    135.    stringArray2 = arrayListString2.toArray(stringArray2);
    136. }
    137.             return response;
    138.         }
    139.  
    140.         @Override
    141.         protected void onPostExecute(String s) {
    142.             super.onPostExecute(s);
    143.             if (dialog.isShowing()) {
    144.                 dialog.dismiss();
    145.             }}
    146.     }}

     

    android ACharts Android
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