在MPAndroidChart库中，如何在很长的时间内将X轴标签包装为两行? [英] In MPAndroidChart Library, How to wrap X Axis Labels to two lines when long?

问题描述

我试图显示X轴标签长到2行.如何在LineChart中实现这一目标?请参见下面的屏幕截图.我想有时间去第二行而不是停留在日期旁边

I am trying to show X axis label to go to 2 lines when they are long. How to achieve this in LineChart? See screenshot below. I want time to go to second line instead of staying next to date

推荐答案

对于像我这样想要实现但保留原始库的人来说，这是一个受@fgueli修改启发的简单解决方案.这仅适用于一个换行符(在标签中添加"\ n")，但您可以轻松地将其适应您的需求.

For those like me who want to achieve this but keep the original library, here is a simple solution inspired by @fgueli's modifications. This applies for one break line only (add "\n" in your labels) but you can easily adapt it to your needs.

1. XAxisRenderer子类

1. Subclass XAxisRenderer

public class CustomXAxisRenderer extends XAxisRenderer {
    public CustomXAxisRenderer(ViewPortHandler viewPortHandler, XAxis xAxis, Transformer trans) {
         super(viewPortHandler, xAxis, trans);
    }

    @Override
    protected void drawLabel(Canvas c, String formattedLabel, float x, float y, MPPointF anchor, float angleDegrees) {
        String line[] = formattedLabel.split("\n");
        Utils.drawXAxisValue(c, line[0], x, y, mAxisLabelPaint, anchor, angleDegrees);
        Utils.drawXAxisValue(c, line[1], x + mAxisLabelPaint.getTextSize(), y + mAxisLabelPaint.getTextSize(), mAxisLabelPaint, anchor, angleDegrees);
    }
}

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1. 在所需图表上设置此渲染器

1. Set this renderer on the desired chart

lineChart.setXAxisRenderer(new CustomXAxisRenderer(lineChart.getViewPortHandler(), lineChart.getXAxis(), lineChart.getTransformer(YAxis.AxisDependency.LEFT)));

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1. 享受！

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