在餅圖上顯示數字

我開發了一個android應用程序來顯示餅圖。我用achartengine庫來做到這一點。通過下面的代碼，我得到了帶有3個部分的餅圖輸出，分別標記爲categorySeries中提到的部分。我想在餅圖上顯示百分比值。我怎樣才能做到這一點？在餅圖上顯示數字

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"); 
     } 
    }

，這是我的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; 
}

來源

2011-07-05 TechnocraT

我得到作爲categorySeries提到的餅圖輸出與標有3個部分，我想以顯示餅圖上的百分比。 – TechnocraT

任何人都可以至少暗示Android的圖表API可能是可能的。 – TechnocraT