achartengine柱状图中的点击

好吧，找了很多android的有关chart点击的资料，表示很纠结。。曾经想到自己写chart但是又太懒了，终于让我看到了，现贴上代码，希望纠结于此的人不再纠结。不想解释，自己测试吧。。achartEngine的Demo和api还有jar，请到官网上载吧
http://code.google.com/p/achartengine/downloads/listjava代码
public class AchartEngineBar extends Activity{
GraphicalView mChartView ;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.chart);
LinearLayout layout = (LinearLayout)findViewById(R.id.chartlayout); 
 XYMultipleSeriesDataset dataset=new XYMultipleSeriesDataset();
     for(int i=0;i<2;i++){
      CategorySeries series = new CategorySeries("Demo Series"+i);
      for(int k=0;k<10;k++){
      series.add(k*(i+4));
      }dataset.addSeries(series.toXYSeries());
     }
     XYMultipleSeriesRenderer render =new XYMultipleSeriesRenderer();
     SimpleSeriesRenderer r = new SimpleSeriesRenderer();
     r.setColor(Color.WHITE);
     render.addSeriesRenderer(r);
     r=new SimpleSeriesRenderer();
     r.setColor(Color.RED);
     render.addSeriesRenderer(r);
     render.setChartTitle("bar chart demo");
     render.setXTitle("x轴");
     render.setYTitle("y轴");
     render.setXAxisMin(0.5);
     render.setXAxisMax(10.5);
     render.setYAxisMin(0);
     render.setYAxisMax(210);
     render.setBarSpacing(1);
     mChartView = ChartFactory.getBarChartView(this, dataset, render, Type.DEFAULT);
     render.setClickEnabled(true);
     
     layout.addView(mChartView, new LayoutParams(LayoutParams.FILL_PARENT,
             LayoutParams.FILL_PARENT));

     
    /// render.setSelectableBuffer(100);
     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(AchartEngineBar.this, "No chart element was clicked", Toast.LENGTH_SHORT)
               .show();
         } else {
           Toast.makeText(
               AchartEngineBar.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();
         }
       }
     });

}
}至于xml随便写个就好了。。