如何显示在正确的顺序x轴的日期 [英] How to show dates on x-axis in correct order

问题描述

其实我已经在池莉构建我的应用程序的时间图图。不过，虽然显示在x轴的日期就说明问题。在code，而使用渲染器设计图我用的是与屏幕快照一起如下图所示。如果有人知道为什么这个问题就出现了，请帮我解决了这一点。

Actually i have contructed an TimeChart graph in my app. But while showing dates on x axis it shows problem. The code i have used while designing chart using renderer is shown below along with the screen shot. If anyone knows why this problem arises please help me to solve this out.

code：

    Calendar pCalendar_FirstDay = Calendar.getInstance();
    int nMinDay = pCalendar_FirstDay.getActualMinimum(Calendar.DATE);
    Date currentDate = pCalendar_FirstDay.getTime();        


    renderer = new XYMultipleSeriesRenderer();     

    //set value for x axis      
    renderer.setChartTitle("Weight / Temperature");
    renderer.setXLabels(15);        
    renderer.setXAxisMin(new Date(currentDate.getYear(), currentDate.getMonth(), nMinDay).getTime());
    renderer.setXAxisMax(currentDate.getTime());
    renderer.setXLabelsAlign(Align.CENTER);

    //set value for y axis
    renderer.setYLabels(10);  
    renderer.setYTitle("Weight", 0);
    renderer.setYAxisMin(10, 0);
    renderer.setYAxisMax(90, 0);
    renderer.setYAxisAlign(Align.LEFT, 0);
    renderer.setYLabelsAlign(Align.LEFT, 0);

    renderer.setPanLimits(new double[]{0,currentDate.getTime(), 10, 90});
    renderer.setAxisTitleTextSize(12);
    renderer.setChartTitleTextSize(12);
    renderer.setLabelsTextSize(10);
    renderer.setLegendTextSize(12);
    renderer.setPointSize(5f);  
    renderer.setApplyBackgroundColor(true);
    renderer.setBackgroundColor(Color.parseColor("#F5F5F5"));
    renderer.setMarginsColor(Color.parseColor("#F5F5F5"));
    renderer.setAxesColor(Color.LTGRAY);
    renderer.setLabelsColor(Color.parseColor("#5f5f5f"));          
    renderer.setShowGrid(true);
    renderer.setGridColor(Color.GRAY); 

输出我得到

我想输出是

推荐答案

从您的API，我使用的是AChartEngine presume。
您是如何打造的时间图实例？
你应该做这样的事情：

From your APIs, I presume you are using AChartEngine. How did you build the TimeChart instance? You should be doing something like this:

ChartFactory.getTimeChartIntent(context, dataset, renderer, pattern);

在这里模式是，你应该调整获取所需显示的日期格式格式。

where pattern is a date formatting format which you should tweak for getting the desired display.

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