Android Open Source - GasMileage Main Activity

• Back to App/code  ↑

From Project

Back to project page GasMileage.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.ving.gasmileage;
/* w  w w  .  j av  a  2s. c  om*/
import java.io.File;
import java.util.ArrayList;
import java.util.Calendar;

import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.DatePickerDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.text.Editable;
import android.text.method.ScrollingMovementMethod;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.ExpandableListView;
import android.widget.TextView;
import com.ving.gasmileage.MyApplication;
import com.ving.gasmileage.MyApplication.MileageData;
import com.ving.gasmileage.MyApplication.YearData;

public class MainActivity extends Activity {

  private MyApplication myApp = null;
  private Context mContext = null;
  private TextView totalArea = null;
  private TextView lastArea = null;
  private ExpandableListView mExpandableList = null;
  private MPGListAdapter adapter = null;
  private SharedPreferences settings = null;
    private SharedPreferences.Editor editor = null;
  private String csvFile = null;
  private String dateToUse = null;
  private Button dateView = null;
  private int day;
  private int month;
  private int year;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    myApp = (MyApplication) getApplication();
    setContentView(R.layout.activity_main);
    myApp.setChanged(false);
    mContext = this;
    Calendar c = Calendar.getInstance();
    year = c.get(Calendar.YEAR);
    month = c.get(Calendar.MONTH);
    day = c.get(Calendar.DAY_OF_MONTH);
    myApp.setDate(month, year);
    dateToUse = (month+1) + "/" + day + "/" + year;
    myApp.setUp();
    totalArea = (TextView)findViewById(R.id.total);
    lastArea = (TextView)findViewById(R.id.last);
    mExpandableList = (ExpandableListView)findViewById(R.id.result);
    setResultAdapter();
    settings = getPreferences(MODE_PRIVATE);
    editor = settings.edit();
    csvFile = settings.getString("filename", "");
    if (! csvFile.equals("")) {
      ReadMileageData readTask = new ReadMileageData(mContext, csvFile);
      readTask.execute(myApp);
    } else {
      myApp.setFileState(false);
    }
  }
  
  public void setResultAdapter() {
    adapter = new MPGListAdapter(mContext,myApp.getExpArray(),myApp);
    mExpandableList.setAdapter(adapter);
    mExpandableList.setOnItemLongClickListener(new OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
          Log.i("onItemLongClick","Did a long click "+ExpandableListView.getPackedPositionType(id));
          int groupPosition = ExpandableListView.getPackedPositionGroup(id);
          int childPosition = ExpandableListView.getPackedPositionChild(id);
            if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
                // You now have everything that you would as if this was an OnChildClickListener() 
                // Add your logic here.
//                Log.i("LongPress","did a long press "+groupPosition+" "+childPosition);
                YearData yd = myApp.getExpArray().get(groupPosition);
                AlertDialog.Builder yearDialog = new AlertDialog.Builder(mContext);
                yearDialog.setTitle(yd.getTitle()+" Results");
                yearDialog.setMessage(yd.toFullString());
                yearDialog.setCancelable(false);
                yearDialog.setPositiveButton("OK",new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface di,int id) {
                      di.dismiss();
                    }
                });
                yearDialog.show();

                // Return true as we are handling the event.
                return true;
            }
            return false;
        }
    });
    myApp.setExpandAdapter(adapter, totalArea, lastArea, mContext);
  }
  
  public void onClickCallback (View target) {
    
    switch (target.getId()) {
    case R.id.enter:
      View dialogView = getLayoutInflater().inflate(R.layout.add_data_dialog,null);
      final Button datePicker = (Button)dialogView.findViewById(R.id.dateVal);
      datePicker.setText(dateToUse);
      Button pos = (Button)dialogView.findViewById(R.id.enter);
      Button neg = (Button)dialogView.findViewById(R.id.cancel);
      final EditText od = (EditText)dialogView.findViewById(R.id.od);
      final EditText miles = (EditText)dialogView.findViewById(R.id.miles);
      final EditText gallons = (EditText)dialogView.findViewById(R.id.gallons);
      final EditText cost = (EditText)dialogView.findViewById(R.id.cost);
//      final TextView tv = (TextView)findViewById(R.id.result);
      AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
      dialog.setView(dialogView);
            dialog.setTitle("Enter the new set of mileage data.");
            dialog.setCancelable(false);
            final AlertDialog enterDataDialog = dialog.create();
            final DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
        public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) {
          year = selectedYear;
          month = selectedMonth;
          day = selectedDay;
          dateToUse = (month+1) + "/" + day + "/" + year;
          datePicker.setText(dateToUse);
            }
        };
            datePicker.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          Log.i("Main","About to call DatePickerDialog");
          DatePickerDialog dpd = new DatePickerDialog(mContext, datePickerListener, year, month, day);
          dpd.show();
        }
            });
            neg.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          enterDataDialog.dismiss();
        }
      });
            pos.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
          imm.hideSoftInputFromWindow(od.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
          String[] newData = new String[5];
          newData[0] = dateToUse;
          newData[1] = od.getText().toString();
          newData[2] = miles.getText().toString();
          newData[3] = gallons.getText().toString();
          newData[4] = cost.getText().toString();
          MileageData md;
          try {
            md = myApp.addData(newData);
            lastArea.setText(md.toFullString());
            myApp.setChanged(true);
              myApp.notifyDataSetChanged(false);
              enterDataDialog.dismiss();
          } catch (Exception e) {
            Log.i("Adding New Data","There was an error "+e.toString());
            final AlertDialog.Builder errorDialog = new AlertDialog.Builder(mContext);
                  errorDialog.setTitle("Error");
                  errorDialog.setMessage("There was an error with the value(s) supplied and a mileage record could not be created.\n\n"+e.toString());
                  errorDialog.setCancelable(false);
                  errorDialog.setPositiveButton("OK",new DialogInterface.OnClickListener() {
                      public void onClick(DialogInterface di,int id) {
                        di.dismiss();
                      }
                  });
                  errorDialog.show();
          }
        }
            });
      enterDataDialog.show();
      break;
    default:
      break;
    }
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
  }
  
  @Override
  public boolean onOptionsItemSelected (MenuItem item) {
    boolean rtn;
    AlertDialog.Builder dialog = null;
    switch (item.getItemId()) {
    case R.id.setFileName:
      Log.i("onOptionsItemSelected","file select");
      View dialogView = getLayoutInflater().inflate(R.layout.setfiledialog,null);
      Button pos = (Button)dialogView.findViewById(R.id.positiveB);
      Button neg = (Button)dialogView.findViewById(R.id.negitiveB);
      final EditText et = (EditText)dialogView.findViewById(R.id.enterFileName);
      et.setText(csvFile);
      final CheckBox cb = (CheckBox)dialogView.findViewById(R.id.replaceDataCB);
      dialog = new AlertDialog.Builder(mContext);
      dialog.setView(dialogView);
            dialog.setTitle("Set the name of the CSV data file.");
            dialog.setCancelable(false);
            final AlertDialog alertDialog = dialog.create();
      pos.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          Log.i("setFileName","pos.OnClickListener");
                csvFile = et.getText().toString();
                editor.putString("filename", csvFile);
              editor.commit();
              if (cb.isChecked()) {
                Log.i("setFileName","Selection is checked, erasing all existing data.");
                myApp.setUp();
                setResultAdapter();
              } else {
                Log.i("setFileName","Selection is not checked, keeping all existing data.");
              }
                ReadMileageData readTask = new ReadMileageData(mContext, csvFile);
                readTask.execute(myApp);
                alertDialog.dismiss();
              }
          });
      neg.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          alertDialog.dismiss();
        }
      });
            alertDialog.show();
            rtn = true;
            break;
    case R.id.resetFileName:
      csvFile = "";
      editor.putString("filename", csvFile);
        editor.commit();
        myApp.setFileState(false);
        rtn = true;
        break;
    case R.id.saveFile:
      if ((myApp.changed()) && (! csvFile.equals(""))) {
        WriteMileageData writeTask = new WriteMileageData(mContext, csvFile);
        writeTask.execute(myApp);
      } else if (! myApp.changed()) {
        dialog = new AlertDialog.Builder(mContext);
              dialog.setTitle("No Changes to Save");
              dialog.setCancelable(false);
              dialog.setPositiveButton("OK",new DialogInterface.OnClickListener() {
                  public void onClick(DialogInterface dialog,int id) {
                    dialog.dismiss();
                  }
              });
              dialog.show();
      } else {
        View dialogSaveAs = getLayoutInflater().inflate(R.layout.saveasfiledialog,null);
        Button posSA = (Button)dialogSaveAs.findViewById(R.id.positiveB);
        Button negSA = (Button)dialogSaveAs.findViewById(R.id.negitiveB);
        final EditText etSA = (EditText)dialogSaveAs.findViewById(R.id.enterFileName);
        etSA.setText(csvFile);
        dialog = new AlertDialog.Builder(mContext);
        dialog.setView(dialogSaveAs);
              dialog.setTitle("Set the name of the CSV data file.");
              dialog.setCancelable(false);
              final AlertDialog saveAsDialog = dialog.create();
        posSA.setOnClickListener(new OnClickListener() {
          public void onClick(View v) {
            Log.i("setFileName","pos.OnClickListener");
                  csvFile = etSA.getText().toString();
                  editor.putString("filename", csvFile);
                editor.commit();
                WriteMileageData writeTask = new WriteMileageData(mContext, csvFile);
            writeTask.execute(myApp);
                  saveAsDialog.dismiss();
                }
            });
        negSA.setOnClickListener(new OnClickListener() {
          public void onClick(View v) {
            saveAsDialog.dismiss();
          }
        });
              saveAsDialog.show();
      }
      rtn = true;
      break;
    case R.id.saveFileAs:
      Log.i("onOptionsItemSelected","save file as...");
      View dialogSaveAs = getLayoutInflater().inflate(R.layout.saveasfiledialog,null);
      Button posSA = (Button)dialogSaveAs.findViewById(R.id.positiveB);
      Button negSA = (Button)dialogSaveAs.findViewById(R.id.negitiveB);
      final EditText etSA = (EditText)dialogSaveAs.findViewById(R.id.enterFileName);
      etSA.setText(csvFile);
      dialog = new AlertDialog.Builder(mContext);
      dialog.setView(dialogSaveAs);
            dialog.setTitle("Set the name of the CSV data file.");
            dialog.setCancelable(false);
            final AlertDialog saveAsDialog = dialog.create();
      posSA.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          Log.i("setFileName","pos.OnClickListener");
                csvFile = etSA.getText().toString();
                editor.putString("filename", csvFile);
              editor.commit();
              WriteMileageData writeTask = new WriteMileageData(mContext, csvFile);
          writeTask.execute(myApp);
                saveAsDialog.dismiss();
              }
          });
      negSA.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          saveAsDialog.dismiss();
        }
      });
            saveAsDialog.show();
            rtn = true;
      break;
    case R.id.emailFile:
      if (myApp.changed()) {
        dialog = new AlertDialog.Builder(mContext);
              dialog.setTitle("Save the file first.");
              dialog.setCancelable(false);
              dialog.setPositiveButton("OK",new DialogInterface.OnClickListener() {
                  public void onClick(DialogInterface di,int id) {
                    di.cancel();
                  }
              });
              dialog.show();
      } else if (myApp.fileOK()) {
        Intent sendIntent = new Intent(Intent.ACTION_SEND); 
        sendIntent.putExtra(Intent.EXTRA_SUBJECT, "Gas Mileage App Data");
//        File dir = new File(Environment.getExternalStorageDirectory().toString(),"/GasMileage");
//        File myFile = new File(dir,csvFile);
        sendIntent.putExtra(Intent.EXTRA_STREAM,
            Uri.parse("file://"+Environment.getExternalStorageDirectory()+"/GasMileage/"+csvFile)); 
        sendIntent.setType("text/csv");
        startActivity(sendIntent);
      }
      rtn = true;
      break;
    case R.id.calcSavings:
      View dialogCalcSavings = getLayoutInflater().inflate(R.layout.calc_savings_dialog,null);
      Button posCS = (Button)dialogCalcSavings.findViewById(R.id.enter);
      Button negCS = (Button)dialogCalcSavings.findViewById(R.id.cancel);
      final EditText etCS = (EditText)dialogCalcSavings.findViewById(R.id.newMPG);
      if (etCS == null) {
        Log.e("calcSavings","etCS is null");
      }
      dialog = new AlertDialog.Builder(mContext);
      dialog.setView(dialogCalcSavings);
            dialog.setTitle("Caclulate Savings");
            dialog.setCancelable(false);
            final AlertDialog calcSavingsDialog = dialog.create();
      posCS.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
          imm.hideSoftInputFromWindow(etCS.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
          float newMPG = Float.parseFloat(etCS.getText().toString());
                float savings = myApp.savings(newMPG);
                calcSavingsDialog.dismiss();
                final AlertDialog.Builder saveDialog = new AlertDialog.Builder(mContext);
                saveDialog.setTitle("Savings Result");
                saveDialog.setMessage("With an MPG of "+String.format("%.1f", newMPG)+
                    ", the difference in cost would have been about $"+String.format("%.2f", savings));
                saveDialog.setCancelable(false);
                saveDialog.setPositiveButton("OK",new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface di,int id) {
                      di.dismiss();
                    }
                });
                saveDialog.show();
              }
          });
      negCS.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
          calcSavingsDialog.dismiss();
        }
      });
            calcSavingsDialog.show();
      rtn = true;
      break;
    default:
      rtn = super.onOptionsItemSelected(item);
      break;
    }
    return rtn;
  }
  
  
  
  @Override
  public void onBackPressed() {
    if (myApp.changed()) {
      AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
            dialog.setTitle("File Not Saved, Exit Anyway?");
            dialog.setCancelable(false);
            dialog.setPositiveButton("Go Back and Save",new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,int id) {
                  dialog.cancel();
                }
            });
            dialog.setNegativeButton("Exit Anyway", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,int id) {
                    finish();
                }
            });
            dialog.show();
    } else {
      finish();
    }
  }
  
//  @Override
//  public void onResume() {
//    EditText et = null;
//    
//    super.onResume();
//    Log.i("onResume","Resting stuff");
//    myApp = (MyApplication) getApplication();
//    myApp.clearExpandAdapter();
//    setResultAdapter();
//    et = (EditText)findViewById(R.id.od);
//    et.setText("");
//    et = (EditText)findViewById(R.id.miles);
//    et.setText("");
//    et = (EditText)findViewById(R.id.gallons);
//    et.setText("");
//    et = (EditText)findViewById(R.id.cost);
//    et.setText("");
//  }
  
  @Override
  public void onPause() {
    super.onPause();
    Log.i("onPause","in onPause");
//    if (myApp.changed()) {
//      AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
//            dialog.setTitle("File Not Saved, Exit Anyway?");
//            dialog.setCancelable(false);
//            dialog.setPositiveButton("Go Back and Save",new DialogInterface.OnClickListener() {
//                public void onClick(DialogInterface dialog,int id) {
//                  dialog.cancel();
//                }
//            });
//            dialog.setNegativeButton("Exit Anyway", new DialogInterface.OnClickListener() {
//                public void onClick(DialogInterface dialog,int id) {
//                    finish();
//                }
//            });
//            dialog.show();
//    }
  }
  
//  @Override
//    protected void onStop() {
//      super.onStop();  
//      if ((csvFile != null) && (! csvFile.equals(""))) {
//        editor.putString("filename", csvFile);
//        editor.commit();
//      }
//    }

}

Java Source Code List

• Back to App/code  ↑