小程序源码 饼状图和柱状图.rar

package com.activity.main; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import java.util.Random; import org.achartengine.ChartFactory; import org.achartengine.chart.BarChart.Type; import org.achartengine.model.CategorySeries; import org.achartengine.model.XYMultipleSeriesDataset; import org.achartengine.renderer.DefaultRenderer; import org.achartengine.renderer.SimpleSeriesRenderer; import org.achartengine.renderer.XYMultipleSeriesRenderer; import android.app.Activity; import android.app.ListActivity; import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.os.Bundle; import android.view.View; import android.widget.ListView; import android.widget.SimpleAdapter; public class MainActivity extends ListActivity { private static final int SERIES_NR = 3; /** Called when the activity is first created. */ private ArrayList<Map<String, String>> maps = new ArrayList<Map<String, String>>(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // setContentView(R.layout.main); // 加入 ListItem “ 调度查询 ” HashMap<String, String> map = new HashMap<String, String>(); map.put("name", " 柱状图 "); map.put("desc", " 显示柱状图 "); maps.add(map); map = new HashMap<String, String>(); map.put("name", " 饼状图 "); map.put("desc", " 显示饼状图 "); maps.add(map); // 构建 listView 的适配器 // SDK 库中提供的一个包含两个 TextView 的 layout new String[]{ "name" , "desc" }, // maps 中的两个 key SimpleAdapter adapter = new SimpleAdapter(this, maps, android.R.layout.simple_list_item_2, new String[] { "name", "desc" }, new int[] { android.R.id.text1, android.R.id.text2 }); // 两个 TextView 的 id ); this.setListAdapter(adapter); } // ListItem 监听器方法 protected void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); if(position == 0){ XYMultipleSeriesRenderer renderer = getBarDemoRenderer(); Intent intent = ChartFactory.getBarChartIntent(this, getBarDemoDataset(), renderer, Type.DEFAULT); startActivity(intent); }else if(position == 1) { Intent intent = execute(MainActivity.this); startActivity(intent); } } //设置饼状图 public Intent execute(Context context) { double[] values = new double[] { 12, 14, 11, 10, 19 }; int[] colors = new int[] { Color.BLUE, Color.GREEN, Color.MAGENTA, Color.YELLOW, Color.CYAN }; DefaultRenderer renderer = buildCategoryRenderer(colors); renderer.setZoomButtonsVisible(true); renderer.setZoomEnabled(true); renderer.setChartTitleTextSize(20); renderer.setChartTitle("这是一个饼状图"); return ChartFactory.getPieChartIntent(context, buildCategoryDataset("Project budget", values), renderer, "Budget"); } //设置饼状图的Renderer protected DefaultRenderer buildCategoryRenderer(int[] colors) { DefaultRenderer renderer = new DefaultRenderer(); renderer.setLabelsTextSize(15); renderer.setLegendTextSize(15); renderer.setMargins(new int[] { 20, 30, 15, 0 }); for (int color : colors) { SimpleSeriesRenderer r = new SimpleSeriesRenderer(); r.setColor(color); renderer.addSeriesRenderer(r); } return renderer; } //设置饼状图的Series protected CategorySeries buildCategoryDataset(String title, double[] values) { CategorySeries series = new CategorySeries(title); int k = 0; for (double value : values) { series.add("Project " + ++k, value); } return series; } //设置柱状图的Series private XYMultipleSeriesDataset getBarDemoDataset() { XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset(); final int nr = 10; Random r = new Random(); for (int i = 0; i < SERIES_NR; i++) { CategorySeries series = new CategorySeries("Demo series " + (i + 1)); for (int k = 0; k < nr; k++) { series.add(100 + r.nextInt() % 100); } dataset.addSeries(series.toXYSeries()); } return dataset; } //设置柱状图的Renderer public XYMultipleSeriesRenderer getBarDemoRenderer() { XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer(); SimpleSeriesRenderer r = new SimpleSeriesRenderer(); r.setColor(Color.BLUE); renderer.addSeriesRenderer(r); r = new SimpleSeriesRenderer(); r.setColor(Color.GREEN); renderer.addSeriesRenderer(r); r = new SimpleSeriesRenderer(); r.setColor(Color.WHITE); renderer.addSeriesRenderer(r); setChartSettings(renderer); return renderer; } //设置柱状图Renderer的属性 private void setChartSettings(XYMultipleSeriesRenderer renderer) { renderer.setChartTitle("Chart demo"); renderer.setXTitle("x values"); renderer.setYTitle("y values"); renderer.setXAxisMin(0.5);// 设置X轴的最小值为0.5 renderer.setXAxisMax(10.5);// 设置X轴的最大值为10.5 renderer.setYAxisMin(0);// 设置Y轴的最小值为0 renderer.setYAxisMax(210);// 设置Y轴最大值为210 renderer.setDisplayChartValues(true); // 设置是否在柱体上方显示值 renderer.setShowGrid(true);// 设置是否在图表中显示网格 renderer.setXLabels(0);// 设置X轴显示的刻度标签的个数 for (int i = 1; i < 11; i++) { renderer.addTextLabel(i, "" + i); } } }