MPAndroidChart周刊数据

Question

所以我试着用MPAndroidChart做一个每周图表，用当前的周数据和前几周的数据。我可以做单条很好，所有的线，但当我试图做多栏组，它做以下工作。

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还有什么需要我做的吗？我每组每天只有两条酒吧。以下是我的当前代码：

BarData barDataPayments = new BarData(barDataSetCurrentWeek, barDataSetPrevWeek);
        barChartPayments.setData(barDataPayments);

        XAxis xAxisPayments = barChartPayments.getXAxis();
        xAxisPayments.setValueFormatter(new IndexAxisValueFormatter(labelWeekdayNames));

        xAxisPayments.setYOffset(5);
        xAxisPayments.setPosition(XAxis.XAxisPosition.BOTTOM);
        xAxisPayments.setLabelCount(labelWeekdayNames.size());
        xAxisPayments.setGranularity(1f);
        xAxisPayments.setCenterAxisLabels(false);
        xAxisPayments.setDrawGridLines(false);

        float groupSpace = 0.08f;
        float barSpace = 0.03f;
        float barWidth = 0.2f;

        barDataPayments.setBarWidth(barWidth);
        barChartPayments.getXAxis().setAxisMinimum(0);
        barChartPayments.getXAxis().setAxisMaximum(0 + barChartPayments.getBarData().getGroupWidth(groupSpace, barSpace) * 14);
        barChartPayments.groupBars(0, groupSpace, barSpace);

        barChartPayments.invalidate();

Answer 1

所以我最终要做的是手动设置数据。它需要一些调整才能得到我想要的方式，我相信有一个更正确的方法，但到目前为止，这是我找到的最简单的方法。

xAxisMiles.setYOffset(0); // <---- CHANGED TO ZERO
xAxisMiles.setPosition(XAxis.XAxisPosition.BOTTOM);
xAxisMiles.setLabelCount(labelWeekdayNames.size());
xAxisMiles.setGranularity(1f);
xAxisMiles.setCenterAxisLabels(true); // <---- SET TO TRUE
xAxisMiles.setDrawGridLines(false);

//IMPORTANT *****
barDataPayments.setBarWidth(0.40f);
barDataPayments.getXAxis().setAxisMinimum(0);
barDataPayments.getXAxis().setAxisMaximum(7);
barDataPayments.groupBars(0, 0.10f, 0.05f);
//***** IMPORTANT*/

Answer 2

我有个片段可以帮你，

BarData barData = new BarData();
                int i=10;
                for (ExpenseData expenseData : results) {
                    List<BarEntry> barEntryList = new ArrayList<>();
                    barEntryList.add(new BarEntry(i, (float) expenseData.getBalance()));
                    BarDataSet barDataSet = new BarDataSet(barEntryList, expenseData.getCategory());
                    int rand = (int) (i*Math.random());
                    barDataSet.setBarBorderWidth(1);
                    barDataSet.setBarBorderColor(Color.rgb(rand,i*20,i));
                    barDataSet.setColor(Color.rgb(rand,i*20,i));
                    barData.addDataSet(barDataSet);
                    i+=10;
                }
                barChart.setData(barData);