AChartEngine，点击获取情节值

我用achartengine编写了一个简单的时间表。 我想要做的是通过点击图表上的点来获取已经绘制的值，这可能吗？

Answer 1

假设mChartView是您的GraphicalView：

mChartView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint(); double[] xy = mChartView.toRealPoint(0); if (seriesSelection == null) { Toast.makeText(GraficoMensile.this, "No chart element was clicked", Toast.LENGTH_SHORT) .show(); } else { Toast.makeText( GraficoMensile.this, "Chart element in series index " + seriesSelection.getSeriesIndex() + " data point index " + seriesSelection.getPointIndex() + " was clicked" + " closest point value X=" + seriesSelection.getXValue() + ", Y=" + seriesSelection.getValue() + " clicked point value X=" + (float) xy[0] + ", Y=" + (float) xy[1], Toast.LENGTH_SHORT).show(); } } }); 

来源： http ： //code.google.com/p/achartengine/source/browse/trunk/achartengine/demo/org/achartengine/chartdemo/demo/chart/XYChartBuilder.java