Android Open Source - android-usable-location-privacy Statistic Diagram Preference

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright (C) 2014 B. Henne, C. Kater,
 *   Distributed Computing & Security Group,
 *   Leibniz Universitaet Hannover, Germany
 *//  ww w  .  jav a 2s. c  o  m
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.settings.locationprivacy;

import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;

import android.content.Context;
import android.graphics.Color;
import android.preference.Preference;
import android.text.format.DateFormat;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;

import com.android.settings.R;
import com.jjoe64.graphview.BarGraphView;
import com.jjoe64.graphview.GraphView;
import com.jjoe64.graphview.GraphView.GraphViewData;
import com.jjoe64.graphview.GraphViewSeries;
import com.jjoe64.graphview.LineGraphView;
import com.jjoe64.graphview.StatisticGraphView;

public class StatisticDiagramPreference extends Preference {

  private Context context;
  private HashMap<Calendar, Integer> dates;
  private int maxY;

  public StatisticDiagramPreference(Context context, HashMap<Calendar, Integer> dates) {
    super(context);
    this.context = context;
    this.dates = dates;
    this.maxY = 0;

  }

  private GraphViewSeries createData() {
    GraphViewData[] data = new GraphViewData[29];
    this.maxY = 0;
    for (Calendar cal : dates.keySet()) {
      int x = getXValueFromDate(cal);
      int y = dates.get(cal);
      if (x >= 0) {
        System.out.println("Added Value to statistik: [Date]: " + cal
            + " [x]: " + x + " [y]: " + y);
        data[x] = new GraphViewData(x, y);

      }
                        this.maxY = Math.max(maxY, y);
    }
    for (int i = 0; i < data.length; i++) {
      if (data[i] == null) {
        data[i] = new GraphViewData(i, 0);
      }
    }
    return new GraphViewSeries(data);
  }

  private GraphView createGraph() {
    StatisticGraphView graphView = new StatisticGraphView(context, getContext()
        .getResources().getString(
            R.string.lp_settings_statistic_acces_lastmonth), true) {
      @Override
      protected String formatLabel(double value, boolean isValueX) {
        if (isValueX) {
          Calendar cal = getDateFromXValue((int) value);
          return "" + String.format("%02d", cal.get(Calendar.DAY_OF_MONTH)) + "." + String.format("%02d", (cal.get(Calendar.MONTH) + 1))
              + ".";
        }
        return "" + (int) value;
      }
    };
    graphView.setViewPort(0, 27);
    graphView.getGraphViewStyle().setNumVerticalLabels(5);
    graphView.getGraphViewStyle().setNumHorizontalLabels(28);
    graphView.getGraphViewStyle().setGridColor(Color.WHITE);
    graphView.getGraphViewStyle().setTextSize(21); 
    
    graphView.addSeries(createData());
    int maxY = Math.max(this.maxY, 4);
    maxY = ((int) Math.ceil(maxY / 4.)) * 4;
    graphView.setManualYAxisBounds(maxY, 0);
    return graphView;

  }

  public int daysBetween(Calendar d1, Calendar d2) {
    return (int) (Math.abs(d2.getTimeInMillis() - d1.getTimeInMillis()) / (1000 * 60 * 60 * 24));
  }

  private Calendar getDateFromXValue(int x) {
    int daysbetween = 28 - x;
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH, cal.get(Calendar.DAY_OF_MONTH)
        - daysbetween);
    return cal;
  }

  private int getXValueFromDate(Calendar cal) {
    int daysBetween = daysBetween(cal, Calendar.getInstance());
    return 28 - daysBetween;
  }

  protected View onCreateView(ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) getContext()
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.statistic_diagram, null);
    LinearLayout layout = (LinearLayout) view.findViewById(R.id.layout);
    layout.addView(createGraph());
    return view;
  }

}

Java Source Code List

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