AChartEngine

http://code.google.com/p/achartengine/

1. 在折線圖上顯示出每個點的值


((XYSeriesRenderer) renderer.getSeriesRendererAt(0)).setDisplayChartValues(true);

2.  not show legend item


     ((XYSeriesRenderer) renderer.getSeriesRendererAt(0)).setShowLegendItem(false);

hide 紅色圈起的部分

3. 改變X, Y軸上label的color

ex:

   renderer.setYLabelsColor(0, Color.BLACK);

4. 設定線條顏色

            int[] colors = new int[] {  Color.rgb(30, 155, 165)};
   PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE };
  renderer = buildRenderer(colors, styles);

5. 設定線條粗細

 renderer = buildRenderer(colors, styles);
   int length = renderer.getSeriesRendererCount();
   for (int i = 0; i < length; i++) {
     XYSeriesRenderer seriesRenderer  = ((XYSeriesRenderer)  renderer.getSeriesRendererAt(i));

     seriesRenderer.setLineWidth(3f);


   }

6. 設定point

   renderer.setPointSize(10);