Achart引擎折线图 - 显示上弹出点点击 [英] Achart Engine Line chart - Display pop up on click of point

问题描述

我使用Achart引擎折线图来显示值，我使用点式的圆。

I am using Achart Engine Line chart to display values, i am using point style CIRCLE.

我想实现如下：

1）增加点式的宽度 - 我的意思是圈应该是有点大了

1) Increase the point style width - i mean the circle should be bit bigger.

2）我想显示在最重要的是，这将显示的X和Y的值弹出每个点的点击。

2) On click of each point i want a popup to be displayed on top of that which will display the values of X and Y.

我已经做了这方面的一些研究，但没能找到解决方案。

I have done some research on this but was not able to find the solution.

我发现这个code，但如何显示其值小的弹出？

I found this code but how to display the small popup with values ?

final LineChart chart = new LineChart(buildDataset(mTitles, data), mRenderer);
final GraphicalView view = new GraphicalView(mContext, chart);
view.setOnClickListener(new View.OnClickListener() {
  public void onClick(View v) {
     double[] xy = chart.toScreenPoint(view.toRealPoint(0));
     int[] location = new int[] {(int) xy[0], (int) xy[1]};
     SeriesSelection seriesSelection = view.getCurrentSeriesAndPoint();
     if (seriesSelection != null) {
         final Data d = mModel.getDiaryAt(seriesSelection.getSeriesIndex(), 
         seriesSelection.getPointIndex());
         //show popup at xy[0] xy[1]
     }
  }
});

它可能已经没有在SDK中给出，但仍，如果任何人试图将此作为成功。

It might have been not given in the SDK but still if anyone has tried this as was successful.

**编辑**

链接1：<一href=\"http://stackoverflow.com/questions/17721044/achartengine-toscreenpointdouble-always-returns-nullpointerexception?rq=1\">achartengine toScreenPoint（双）总是返回NullPointerException异常

在图像你可以看到一个弹出我想要实现这样的。

In the image you can see a popup i want to implement like that.

推荐答案

您可以看到一个例子<一个href=\"https://$c$c.google.com/p/achartengine/source/browse/trunk/achartengine/demo/org/achartengine/chartdemo/demo/chart/XYChartBuilder.java\"相对=nofollow>此处如何在图表中显示单击点，使用AChartEngine上。

You can see an example here on how to display the clicked point in your chart, using AChartEngine.

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