Example #1
0
  /**
   * DESCRIPTION: Creates the graph.
   *
   * @see android.app.Activity#onCreate(android.os.Bundle)
   */
  public void onCreate(Bundle savedInstanceState, Activity parent, XYPlot xyplot) {
    this.activity = parent;
    this.plot = xyplot;

    // get current units of measurement
    units = new Units(Settings.KEY_UNITS);

    // create a formatter to use for drawing the plot series
    plotFormatter =
        new BarFormatter(
            activity.getResources().getColor(R.color.plot_fill_color),
            activity.getResources().getColor(R.color.plot_line_color));

    // create a formatter for average label
    float hOffset = 50f;
    float vOffset = -10f;
    avgLabelFormatter =
        new PointLabelFormatter(
            activity.getResources().getColor(R.color.plot_avgline_color), hOffset, vOffset);

    // create a formatter to use for drawing the average line
    avgFormatter =
        new LineAndPointFormatter(
            activity.getResources().getColor(R.color.plot_avgline_color),
            null,
            null,
            avgLabelFormatter);

    // white background for the plot
    plot.getGraphWidget().getGridBackgroundPaint().setColor(Color.WHITE);

    // remove the series legend
    plot.getLayoutManager().remove(plot.getLegendWidget());

    // make room for bigger labels
    // TODO: is there a better way to do this?
    float width = plot.getGraphWidget().getRangeLabelWidth() * 2f;
    plot.getGraphWidget().setRangeLabelWidth(width);
    width = plot.getGraphWidget().getDomainLabelWidth() * 1.5f;
    plot.getGraphWidget().setDomainLabelWidth(width);
    float margin = plot.getGraphWidget().getMarginTop() * 3f;
    plot.getGraphWidget().setMarginTop(margin);
    margin = plot.getGraphWidget().getMarginBottom() * 3f;
    plot.getGraphWidget().setMarginBottom(margin);

    // define plot axis labels
    plot.setRangeLabel(units.getLiquidVolumeLabel());
    plot.setDomainLabel(activity.getString(R.string.months_label));

    // specify format of axis value labels
    plot.setRangeValueFormat(ylabels);
    plot.setDomainValueFormat(xlabels);

    // plot the data
    drawPlot();
  }
  @Override
  public void onCreate(Bundle savedInstanceState) {

    // android boilerplate stuff
    super.onCreate(savedInstanceState);
    setContentView(R.layout.dynamicxyplot_example);

    // get handles to our View defined in layout.xml:
    dynamicPlot = (XYPlot) findViewById(R.id.dynamicXYPlot);

    plotUpdater = new MyPlotUpdater(dynamicPlot);

    // only display whole numbers in domain labels
    dynamicPlot.getGraphWidget().setDomainValueFormat(new DecimalFormat("0"));

    // getInstance and position datasets:
    data = new SampleDynamicXYDatasource();
    SampleDynamicSeries sine1Series = new SampleDynamicSeries(data, 0, "Sine 1");
    SampleDynamicSeries sine2Series = new SampleDynamicSeries(data, 1, "Sine 2");

    LineAndPointFormatter formatter1 =
        new LineAndPointFormatter(Color.rgb(0, 0, 0), null, null, null);
    formatter1.getLinePaint().setStrokeJoin(Paint.Join.ROUND);
    formatter1.getLinePaint().setStrokeWidth(10);
    dynamicPlot.addSeries(sine1Series, formatter1);

    LineAndPointFormatter formatter2 =
        new LineAndPointFormatter(Color.rgb(0, 0, 200), null, null, null);
    formatter2.getLinePaint().setStrokeWidth(10);
    formatter2.getLinePaint().setStrokeJoin(Paint.Join.ROUND);

    // formatter2.getFillPaint().setAlpha(220);
    dynamicPlot.addSeries(sine2Series, formatter2);

    // hook up the plotUpdater to the data model:
    data.addObserver(plotUpdater);

    // thin out domain tick labels so they dont overlap each other:
    dynamicPlot.setDomainStepMode(XYStepMode.INCREMENT_BY_VAL);
    dynamicPlot.setDomainStepValue(5);

    dynamicPlot.setRangeStepMode(XYStepMode.INCREMENT_BY_VAL);
    dynamicPlot.setRangeStepValue(10);

    dynamicPlot.setRangeValueFormat(new DecimalFormat("###.#"));

    // uncomment this line to freeze the range boundaries:
    dynamicPlot.setRangeBoundaries(-100, 100, BoundaryMode.FIXED);

    // create a dash effect for domain and range grid lines:
    DashPathEffect dashFx =
        new DashPathEffect(new float[] {PixelUtils.dpToPix(3), PixelUtils.dpToPix(3)}, 0);
    dynamicPlot.getGraphWidget().getDomainGridLinePaint().setPathEffect(dashFx);
    dynamicPlot.getGraphWidget().getRangeGridLinePaint().setPathEffect(dashFx);
  }