GraphActivity.java 文件源码

private void pressureGraph() {
    LineChartView lineChartView = (LineChartView) findViewById(R.id.graph_pressure);

    // Data
    LineSet dataset = new LineSet();
    for (int i = 0; i < weatherList.size(); i++) {
        float pressure = UnitConvertor.convertPressure(Float.parseFloat(weatherList.get(i).getPressure()), sp);

        if (pressure < minPressure) {
            minPressure = pressure;
        }

        if (pressure > maxPressure) {
            maxPressure = pressure;
        }

        dataset.addPoint(getDateLabel(weatherList.get(i), i), pressure);
    }
    dataset.setSmooth(true);
    dataset.setColor(Color.parseColor("#4CAF50"));
    dataset.setThickness(4);

    lineChartView.addData(dataset);

    // Grid
    Paint paint = new Paint();
    paint.setStyle(Paint.Style.STROKE);
    paint.setAntiAlias(true);
    paint.setColor(Color.parseColor("#333333"));
    paint.setPathEffect(new DashPathEffect(new float[]{10, 10}, 0));
    paint.setStrokeWidth(1);
    lineChartView.setGrid(ChartView.GridType.HORIZONTAL, paint);
    lineChartView.setBorderSpacing(Tools.fromDpToPx(10));
    lineChartView.setAxisBorderValues((int) minPressure - 1, (int) maxPressure + 1);
    lineChartView.setStep(2);
    lineChartView.setXAxis(false);
    lineChartView.setYAxis(false);

    lineChartView.show();
}