Android Studio利用AChartEngine制作饼图的方法

double[] values = {500.00, 800.00, 1000.00, 900.00};
double sumVal = values[0] + values[1] + values[2] + values[3];

CategorySeries dataset = buildCategoryDataset("图文报表", values);

protected CategorySeries buildCategoryDataset(String title, double[] values){
 CategorySeries series = new CategorySeries(title);
 series.add("房租:"+values[0], values[0]/sumVal);
 series.add("伙食费:"+values[1], values[1]/sumVal);
 series.add("生活费:"+values[2], values[2]/sumVal);
 series.add("其它:"+values[3], values[3]/sumVal);
 return series;
}

private DefaultRenderer getPieRenderer(){
 DefaultRenderer renderer = new DefaultRenderer();
 renderer.setZoomButtonsVisible(true);//设置显示放大放小缩小按钮
 renderer.setZoomEnabled(true);//设置允许放大放小
 //设置各个类别分别对应的颜色
 SimpleSeriesRenderer yellowRenderer = new SimpleSeriesRenderer();
 yellowRenderer.setColor(Color.YELLOW);
 SimpleSeriesRenderer blueRenderer = new SimpleSeriesRenderer();
 blueRenderer.setColor(Color.BLUE);
 SimpleSeriesRenderer redRenderer = new SimpleSeriesRenderer();
 redRenderer.setColor(Color.RED);
 renderer.addSeriesRenderer(yellowRenderer);
 renderer.addSeriesRenderer(blueRenderer);
 renderer.addSeriesRenderer(redRenderer);

 renderer.setLabelsTextSize(30);//设置坐标字号
 renderer.setLegendTextSize(50);//设置图例字号
 renderer.setApplyBackgroundColor(true);//设置是否应用背景色
 renderer.setBackgroundColor(Color.BLACK);

 return renderer;
}

int[] colors = {Color.BLUE, Color.GREEN, Color.MAGENTA, Color.RED};

DefaultRenderer renderer = buildCategoryRenderer(colors);

protected DefaultRenderer buildCategoryRenderer(int[] colors){
 DefaultRenderer renderer = new DefaultRenderer();
 renderer.setLegendTextSize(35);//设置左下角标注文字的大小
 renderer.setLabelsTextSize(25);//饼图上标记文字的字体大小
 renderer.setLabelsColor(Color.BLACK);//饼图上标记文字的颜色
 renderer.setPanEnabled(false);
 renderer.setDisplayValues(true);//显示数据


 for(int color : colors){
 SimpleSeriesRenderer r = new SimpleSeriesRenderer();
 r.setColor(color);
 //设置百分比
 r.setChartValuesFormat(NumberFormat.getPercentInstance());
 renderer.addSeriesRenderer(r);
 }
 return renderer;
}

private LinearLayout ll_expense_piechart;
private GraphicalView graphicalView;
 
private void initPieChart(View v){
 ll_expense_piechart = (LinearLayout) v.findViewById(R.id.ll_expense_piechart);
 ll_expense_piechart.removeAllViews();

 graphicalView = ChartFactory.getPieChartView(getContext()
  ,dataset, renderer);//饼状图
 graphicalView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

 ll_expense_piechart.addView(graphicalView);
}