在饼图上显示数字

Question

我开发了一个Android应用程序来显示饼图.我用过这个achartengine库来做这个.使用下面的代码,我得到饼图输出,其中3个部分标记为categorySeries中提到的.我想在饼图上显示百分比值.我怎样才能做到这一点？

public static final GraphicalView getPieChartView(Context context,
             CategorySeries dataset, DefaultRenderer renderer) {
         checkParameters(dataset, renderer);
         PieChart chart = new PieChart(dataset, renderer);

         return new GraphicalView(context, chart);
     }

     private static void checkParameters(CategorySeries dataset,
             DefaultRenderer renderer) {
         if (dataset == null
             || renderer == null
             || dataset.getItemCount() != renderer
                .getSeriesRendererCount()) {
             throw new IllegalArgumentException(
                     "Dataset and renderer should be not null and the dataset number of items should be equal to the number of series renderers");
         }
     }     

这是我的onCreate方法

 Bundle bundle = getIntent().getExtras();
 int highc = bundle.getInt("high");
 int lowc = bundle.getInt("low");
 int medc = bundle.getInt("medium");



RelativeLayout layout = (RelativeLayout) findViewById(R.id.relativestatsLayout);
TextView message = (TextView) findViewById(R.id.statText);
message.setText("\n\n\tTickets Summary");
message.setGravity(50);
//layout.addView(message);
//setContentView(message);


int[] colors = new int[] { Color.rgb(255, 0, 0),Color.rgb(220, 51,51), Color.rgb(255, 191, 0) };
DefaultRenderer renderer = buildCategoryRenderer(colors);

CategorySeries categorySeries = new CategorySeries("Tickets Chart");
categorySeries.getTitle();
categorySeries.add("critical", highc);
categorySeries.add("major ", medc);
categorySeries.add("minor ", lowc);



layout.addView(getPieChartView(this, categorySeries, renderer));
}

protected DefaultRenderer buildCategoryRenderer(int[] colors) {
    DefaultRenderer renderer = new DefaultRenderer();
    for (int color : colors) {
       SimpleSeriesRenderer r = new SimpleSeriesRenderer();
       r.setColor(color);

       renderer.addSeriesRenderer(r);
    }
    return renderer;
}

Answer 1

我不确定您是否仍然遇到这个问题。但是，如果您的饼图相当简单，您应该考虑自己绘制它，而不是使用库。这可能会有所帮助。

https://github.com/blessenm/PieChartDemo