Android Open Source - weatherWidget Weather Graph View

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Back to project page weatherWidget.

License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * @file/* w ww .  j a va2 s.  c om*/
 */
package weather.widget.graph;

import weather.widget.R;
import weather.widget.utils.DataBaseHelper;
import weather.widget.utils.UsefullFunctions;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.LinearLayout;

import com.jjoe64.graphview.GraphView;
import com.jjoe64.graphview.GraphView.GraphViewData;
import com.jjoe64.graphview.GraphView.LegendAlign;
import com.jjoe64.graphview.GraphViewSeries;
import com.jjoe64.graphview.GraphViewSeries.GraphViewSeriesStyle;
import com.jjoe64.graphview.LineGraphView;

/**
 * WeatherGraphView class. \n
 * generates and displays graphical view for sensor values.
 * @author Max
 *
 */
public class WeatherGraphView extends Activity {
  
  private UsefullFunctions useFunc = new UsefullFunctions(this);
  private String TRUE = "1";
  private Integer MAX_NUM_HORIZONTAL_LABELS = 7;

  /** 
   * Called when activity is first created. 
   * 
   * fetches all sensor-values out of database and display graphic view of 
   * each sensor in own LinearLayout.
   */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.graphs);
    
    int idCounter = 0;
    
    // IDs der LinearLayouts in ein Array schreiben, 
    // damit keine Lcken zwischen den Layouts enstehen, 
    // wenn nicht der Reihe nach ausgewhlt sind
    int[] ids = {R.id.graph2,R.id.graph3,R.id.graph4,R.id.graph5,R.id.graph6};

    DataBaseHelper dbHelper = new DataBaseHelper(getApplicationContext());
    dbHelper.openDataBase();
    
    // Display all graphs in one big overview
    GraphView graphView = new LineGraphView(this,
                        getString(R.string.Overview));
    
    // Temperatur
    if(dbHelper.getSetting(dbHelper.getCheckboxTempID()).equals(TRUE))
    {
      GraphViewData[] tempData = dbHelper.getData(dbHelper.getKeyTemp());
      GraphViewSeries tempSeries = new GraphViewSeries(getString(R.string.Temperature), new GraphViewSeriesStyle(Color.RED, 3), tempData);
      graphView.addSeries(tempSeries);
      
      // graph with dynamically generated horizontal and vertical labels
      GraphView graphViewTemp = new LineGraphView(
          this // context
          , getString(R.string.Temp) // heading
      );
      graphViewTemp.addSeries(tempSeries);
      ((LineGraphView) graphViewTemp).setDrawBackground(true);
      ((LineGraphView) graphViewTemp).getGraphViewStyle().setNumHorizontalLabels(MAX_NUM_HORIZONTAL_LABELS);
      LinearLayout TempLayout = (LinearLayout) findViewById(ids[idCounter]);
      TempLayout.addView(graphViewTemp);
      idCounter++;
    }
    
    // Luftdruck
    if(dbHelper.getSetting(dbHelper.getCheckboxPresID()).equals(TRUE)){
      GraphViewData[] presData = dbHelper.getData(dbHelper.getKeyPres());
      GraphViewSeries presSeries = new GraphViewSeries(getString(R.string.Presssure), new GraphViewSeriesStyle(Color.GREEN, 3), presData);
      graphView.addSeries(presSeries);
      
      GraphView graphViewPres = new LineGraphView(this, getString(R.string.Pres));
      graphViewPres.addSeries(presSeries);
      ((LineGraphView) graphViewPres).setDrawBackground(true);
      ((LineGraphView) graphViewPres).getGraphViewStyle().setNumHorizontalLabels(MAX_NUM_HORIZONTAL_LABELS);
      LinearLayout PresLayout = (LinearLayout) findViewById(ids[idCounter]);
      PresLayout.addView(graphViewPres);
      idCounter++;
    }
    
    // Luftfeuchtigkeit
    if(dbHelper.getSetting(dbHelper.getCheckboxHumID()).equals(TRUE)){
      GraphViewData[] humData = dbHelper.getData(dbHelper.getKeyHum());
      GraphViewSeries humSeries = new GraphViewSeries(getString(R.string.Humidity), new GraphViewSeriesStyle(Color.BLUE, 3), humData);
      graphView.addSeries(humSeries);
      
      GraphView graphViewHum = new LineGraphView(this, getString(R.string.Hum));
      graphViewHum.addSeries(humSeries);
      ((LineGraphView) graphViewHum).setDrawBackground(true);
      ((LineGraphView) graphViewHum).getGraphViewStyle().setNumHorizontalLabels(MAX_NUM_HORIZONTAL_LABELS);
      LinearLayout HumLayout = (LinearLayout) findViewById(ids[idCounter]);
      HumLayout.addView(graphViewHum);
      idCounter++;
    }
    
    // Eigener Sensor 1
    if(dbHelper.getSetting(dbHelper.getCheckboxOwn1ID()).equals(TRUE)){
      GraphViewData[] ownData = dbHelper.getData(dbHelper.getKeyOwn1());
      GraphViewSeries ownSeries = new GraphViewSeries(dbHelper.getSetting(dbHelper.getJsonOwn1ID()), new GraphViewSeriesStyle(Color.GRAY, 3), ownData);
      graphView.addSeries(ownSeries);
      
      GraphView graphViewOwn = null;
      if(dbHelper.getSetting(dbHelper.getJsonOwn1SCALEID()) != null) {
        graphViewOwn = new LineGraphView(this, dbHelper.getSetting(dbHelper.getJsonOwn1ID()) + " in " + dbHelper.getSetting(dbHelper.getJsonOwn1SCALEID()));
      }else {
        graphViewOwn = new LineGraphView(this, dbHelper.getSetting(dbHelper.getJsonOwn1ID()));
      }
      graphViewOwn.addSeries(ownSeries);
      ((LineGraphView) graphViewOwn).setDrawBackground(true);
      ((LineGraphView) graphViewOwn).getGraphViewStyle().setNumHorizontalLabels(MAX_NUM_HORIZONTAL_LABELS);
      LinearLayout OwnLayout = (LinearLayout) findViewById(ids[idCounter]);
      OwnLayout.addView(graphViewOwn);
      idCounter++;
    }
    
    // Eigener Sensor 2
    if(dbHelper.getSetting(dbHelper.getCheckboxOwn2ID()).equals(TRUE)){
      GraphViewData[] ownData = dbHelper.getData(dbHelper.getKeyOwn2());
      GraphViewSeries ownSeries = new GraphViewSeries(dbHelper.getSetting(dbHelper.getJsonOwn2ID()), new GraphViewSeriesStyle(Color.WHITE, 3), ownData);
      graphView.addSeries(ownSeries);
      
      GraphView graphViewOwn = null;
      if(dbHelper.getSetting(dbHelper.getJsonOwn2SCALEID()) != null) {
        graphViewOwn = new LineGraphView(this, dbHelper.getSetting(dbHelper.getJsonOwn2ID()) + " in " + dbHelper.getSetting(dbHelper.getJsonOwn2SCALEID()));
      }else {
        graphViewOwn = new LineGraphView(this, dbHelper.getSetting(dbHelper.getJsonOwn2ID()));
      }
      graphViewOwn.addSeries(ownSeries);
      ((LineGraphView) graphViewOwn).setDrawBackground(true);
      ((LineGraphView) graphViewOwn).getGraphViewStyle().setNumHorizontalLabels(MAX_NUM_HORIZONTAL_LABELS);
      LinearLayout OwnLayout = (LinearLayout) findViewById(ids[idCounter]);
      OwnLayout.addView(graphViewOwn);
      idCounter++;
    }
    
    graphView.setShowLegend(true);
    graphView.setLegendAlign(LegendAlign.MIDDLE);
    graphView.setLegendWidth(350);
    ((LineGraphView) graphView).getGraphViewStyle().setNumHorizontalLabels(MAX_NUM_HORIZONTAL_LABELS);
    LinearLayout layout = (LinearLayout) findViewById(R.id.graph1);
    layout.addView(graphView);
    
    dbHelper.close();
  }
  
  /**
   * enable settings-button
   */
  @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu, menu);
        return true;
    }   
  
  /**
   * called if a menu item is selected
   */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        Intent menuIntent = useFunc.getMenuIntent(item.getItemId());
        startActivityForResult(menuIntent,0);
        return true;
    }
}

Java Source Code List

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