Android Open Source - MyMoneyMate A Chart Engine Pie Chart Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

/* *************************************************************************************
 * Copyright ? 2013 Deepika Punyamurtula
 * MyMoneyMate - Is an Open Source Android application to keep a record of your expenses.
 * This program is free software: you can redistribute it and/or modify it under 
 * the terms of the GNU General Public License as published by the Free Software Foundation, 
 * either version 3 of the License, or (at your option) any later version.
/*from   ww  w  . j  a  va2s .  co  m*/
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program.
 * If not, see http://www.gnu.org/licenses/.
 * Please see the file "License" in this distribution for license terms. 
 * Below is the link to the License file:
 * https://github.com/udeepika/MyMoneyMate/blob/master/License.txt
 *
 * Author - Deepika Punyamurtula
 * email: udeepika@pdx.edu
 * Link to repository- https://github.com/udeepika/MyMoneyMate
 * Reference : http://v4all123.blogspot.com/2013/03/piechart-using-achartengine.html 
 ***************************************************************************************** */


package com.example.moneymeterexample;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.achartengine.ChartFactory;  
import org.achartengine.GraphicalView;  
import org.achartengine.model.CategorySeries;  
import org.achartengine.model.SeriesSelection;  
import org.achartengine.renderer.DefaultRenderer;  
import org.achartengine.renderer.SimpleSeriesRenderer;  
import android.graphics.Color;  
import android.view.View;  
import android.view.ViewGroup.LayoutParams;  
import android.widget.LinearLayout;  
import android.widget.Toast;  

public class AChartEnginePieChartActivity extends Activity {   

  private CategorySeries mSeries = new CategorySeries("");  
  private HashMap<String,Float> chart_values;// = new HashMap<String,Float>();
  private static int[] COLORS = {Color.rgb(255, 0, 255),Color.rgb(76,0,153),Color.YELLOW,
    Color.BLUE,Color.RED,Color.CYAN,Color.GREEN,Color.MAGENTA,Color.GRAY,
    Color.LTGRAY,Color.DKGRAY,Color.WHITE,Color.rgb(0, 0, 0),Color.rgb(255,204,204)};  
  private DefaultRenderer mRenderer = new DefaultRenderer();  
  private static boolean is_custom = false; 
  private static boolean is_date = false;
  private static boolean is_category = false;
  private GraphicalView mChartView;  
  DecimalFormat df;
  @Override  
  protected void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.activity_achart_engine_pie_chart); 
    df = new DecimalFormat("0.00");
    DataBaseHelper db;
    db = new DataBaseHelper(this);
    is_custom = getIntent().getBooleanExtra("is_custom", false);
    is_date = getIntent().getBooleanExtra("is_date", false);
    is_category = getIntent().getBooleanExtra("is_category", false);


    /* Get the expenses from the database    */
    if(is_date){
      String date = getIntent().getStringExtra("date");
      chart_values=db.getChartValuesforDate(date);  

    }

    else if(is_category)
    {
      String from = getIntent().getStringExtra("from_date");
      String to = getIntent().getStringExtra("to_date");
      String category = getIntent().getStringExtra("category");

      if(category.equals("All"))
        chart_values=db.getChartValuesBetweenDates(from,to);

      else
        chart_values=db.getChartValuesForCat(category,from,to);

    }

    else
      chart_values=db.getAllExpenseforChart();  

    int i = 0;
    Iterator values = chart_values.entrySet().iterator();
    float[] VALUES=new float[chart_values.size()]; 
    ArrayList<String> CATEGORY_LIST = new ArrayList<String>();

    while(values.hasNext())
    {
      Map.Entry entry = (Map.Entry)values.next();
      VALUES[i]=(Float) entry.getValue();
      CATEGORY_LIST.add((String) entry.getKey());
      i++;
    } 

    mRenderer.setApplyBackgroundColor(true);  
    mRenderer.setBackgroundColor(Color.rgb(99, 228, 240));  
    mRenderer.setChartTitleTextSize(40); 
    mRenderer.setLabelsTextSize(22);  
    mRenderer.setLegendTextSize(24); 
    mRenderer.setLabelsColor(Color.BLACK);
    mRenderer.setChartTitle("Expenses");
    mRenderer.setChartTitleTextSize(30);
    mRenderer.setMargins(new int[] { 60, 30, 15, 10 });  
    mRenderer.setZoomButtonsVisible(true);  
    mRenderer.setStartAngle(90);  

    for (int i1 = 0; i1 < VALUES.length; i1++) 
    {  
      mSeries.add(CATEGORY_LIST.get(i1) + " " + VALUES[i1], VALUES[i1]);  
      SimpleSeriesRenderer renderer = new SimpleSeriesRenderer();  
      renderer.setColor(COLORS[(mSeries.getItemCount() - 1) % COLORS.length]);  
      mRenderer.addSeriesRenderer(renderer);  
    }  

    if (mChartView != null) {  
      mChartView.repaint();  
    }  

  }  

  @Override  
  protected void onResume() {  
    super.onResume();  
    if (mChartView == null) {  
      LinearLayout layout = (LinearLayout) findViewById(R.id.chart);  
      mChartView = ChartFactory.getPieChartView(this, mSeries, mRenderer);  
      mRenderer.setClickEnabled(true);  
      mRenderer.setSelectableBuffer(10);  
      mChartView.setOnClickListener(new View.OnClickListener() {  
        @Override  
        public void onClick(View v) {  
          SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();  

          if (seriesSelection == null)   
            Toast.makeText(AChartEnginePieChartActivity.this,"No chart element was clicked",Toast.LENGTH_SHORT).show();  
          else  
            Toast.makeText(AChartEnginePieChartActivity.this,"Chart element data point index "+ (seriesSelection.getPointIndex()+1) + " was clicked" + " point value="+ df.format(seriesSelection.getValue()), Toast.LENGTH_SHORT).show();  

        }  
      });  

      mChartView.setOnLongClickListener(new View.OnLongClickListener() {  
        @Override  
        public boolean onLongClick(View v) {  
          SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();  
          if (seriesSelection == null) {  
            Toast.makeText(AChartEnginePieChartActivity.this,"No chart element was long pressed", Toast.LENGTH_SHORT);  
            return false;   
          } else {  
            Toast.makeText(AChartEnginePieChartActivity.this,"Chart element data point index "+ seriesSelection.getPointIndex()+ " was long pressed",Toast.LENGTH_SHORT);  
            return true;         
          }  
        }  
      });  
      layout.addView(mChartView, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));  
    }  
    else   
      mChartView.repaint();  

  } 

  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.achart_engine_pie_chart, menu);
    return true;
  }
}

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