AChartEngine Y轴自定义区域边距和图表值为String？

Question

我创建了一个图表,显示在测试期间回答的问题(X)/时间(Y).您可以在此处查看第一个问题以获取详细信息

但现在我需要正确显示图表项目符号值,此时显示毫秒值,但我需要显示自定义hh:mm:ss值,就像我使用Y轴标签一样,并以某种方式自定义Y轴区域以正确显示完整值.下面是图表现在的样子截图.

[编辑]

在Dan的帮助下,我几乎得到了我想要的东西.这只是一个小问题.请查看下面的屏幕截图,其中显示了图表值.我从AChartEngine存储库更新到1.1.0.addNotations位于TimeSeries对象上.我复制粘贴下面的代码,将数据添加到我的TimeSeries实例.

myQuestionsTimeSeries.add(i, DateTimeHelper.getMillisFromTime(answer.getEstimatedAnswerTime()));
                xyMultipleSeriesRenderer.addYTextLabel(DateTimeHelper.getMillisFromTime(answer.getEstimatedAnswerTime()),
                        String.valueOf(answer.getEstimatedAnswerTime()));
                myQuestionsTimeSeries.addAnnotation(String.valueOf(answer.getEstimatedAnswerTime()), i,
                        DateTimeHelper.getMillisFromTime(answer.getEstimatedAnswerTime()));

代码结果显示在此图表中:

[编辑]

这基本上是整个班级:

private void initQuestionsTimeChart() {
        xyMultipleSeriesDataset = new XYMultipleSeriesDataset();
        xyMultipleSeriesRenderer = new XYMultipleSeriesRenderer();
        questionsTimeChart = ChartFactory.getLineChartView(getActivity(), xyMultipleSeriesDataset, xyMultipleSeriesRenderer);
        rootView.addView(questionsTimeChart);

        initSeriesData();
    }

    private void initSeriesData() {
        createMyQuestionsSeries();
        addSeriesAndRenderer(myQuestionsTimeSeries, myQuestionsRenderer);

        xyMultipleSeriesRenderer.setYTitle("Questions Time");
        xyMultipleSeriesRenderer.setXTitle("Questions Number");
        xyMultipleSeriesRenderer.setMarginsColor(Color.argb(0, 255, 255, 255));
        xyMultipleSeriesRenderer.setAxesColor(Color.BLACK);
        xyMultipleSeriesRenderer.setLabelsColor(Color.BLACK);
        xyMultipleSeriesRenderer.setXLabelsColor(Color.BLACK);
        xyMultipleSeriesRenderer.setYLabelsColor(0, Color.BLACK);
        xyMultipleSeriesRenderer.setAxisTitleTextSize(16);
        xyMultipleSeriesRenderer.setLabelsTextSize(15);
        xyMultipleSeriesRenderer.setYLabelsAlign(Paint.Align.RIGHT);
        xyMultipleSeriesRenderer.setSelectableBuffer(20);
        xyMultipleSeriesRenderer.setYLabels(0);
        xyMultipleSeriesRenderer.setMargins(new int[]{ 80, 80, 80, 80 });
    }

    private void addSeriesAndRenderer(XYSeries series, XYSeriesRenderer renderer) {
        xyMultipleSeriesDataset.addSeries(series);
        xyMultipleSeriesRenderer.addSeriesRenderer(renderer);
    }

    private void createMyQuestionsSeries() {
        myQuestionsTimeSeries = new TimeSeries("My Questions/Time");
        myQuestionsRenderer = new XYSeriesRenderer();
        myQuestionsRenderer.setColor(Color.BLUE);
        myQuestionsRenderer.setLineWidth(3f);
        myQuestionsRenderer.setPointStyle(PointStyle.CIRCLE);
        myQuestionsRenderer.setFillPoints(true);
        myQuestionsRenderer.setChartValuesSpacing(10f);
    }

    private void fillData() {
        int i = 0;
        for (Answer answer : getAnswers()) {
            i++;
            if (answer.getEstimatedAnswerTime() != null) {
                myQuestionsTimeSeries.add(i, DateTimeHelper.getMillisFromTime(answer.getEstimatedAnswerTime()));
                xyMultipleSeriesRenderer.addYTextLabel(DateTimeHelper.getMillisFromTime(answer.getEstimatedAnswerTime()),
                        String.valueOf(answer.getEstimatedAnswerTime()));
                myQuestionsTimeSeries.addAnnotation(String.valueOf(answer.getEstimatedAnswerTime()), i,
                        DateTimeHelper.getMillisFromTime(answer.getEstimatedAnswerTime()));
            }
        }
    }

先感谢您!

Answer 1

首先,隐藏图表值:

renderer.setDisplayChartValues(false);

然后,为每个图表值添加注释:

renderer.addAnnotation("text", x, y);

要使Y轴标签可见,只需将它们对齐到LEFT:

renderer.setYLabelsAlign(Align.LEFT);

或者你可以增加边距:

renderer.setMargins(margins);

确保您使用的是此处提供的最新ACE版本.