android achartengine实时柱状图例子

最近这段时间在研究android achartengine报表，如图：
android achartengine实时柱状图例子_第1张图片
通过后台来获取json数据，并解析：
public class ZTMainActivity extends Activity {/** * 柱状图链接 */private static String getUrl = "http://192.168.3.168:8090/PADSupportingService/action/Struts_subway_SubwayFlowCharts_highChartsData.action";@Overrideprotected void onCreate(Bundle savedInstanceState) {PADChartUtil chartUtil = PADChartUtil.getInstance();chartUtil.strictMode();super.onCreate(savedInstanceState);setContentView(R.layout.activity_ztmain);//创建一个HttpClient对象  HttpClient httpclient = new DefaultHttpClient();//创建HttpGet对象 HttpGet request = new HttpGet(getUrl);  List<double[]> values = new ArrayList<double[]>();XYMultipleSeriesRenderer renderer = chartUtil.getXYMultipleSeriesRenderer();chartUtil.setChartSettings(renderer, "客流信息", "", "万人", 0.5, 18.5, 0,300, Color.GRAY, Color.rgb(106, 106, 113));// 画笔的颜色预先定义成浅灰色String pattern="00";  java.text.DecimalFormat df = new java.text.DecimalFormat(pattern);Map<Integer,String> map = new HashMap<Integer,String>();for(int j = 1;j < 19;j++){map.put(j, df.format(j+5)+":00");}String title = "";try {request.addHeader("Accept","text/json");  //获取响应的结果  HttpResponse httpResponse = httpclient.execute(request);//获取HttpEntity  HttpEntity entity=httpResponse.getEntity();  //获取响应的结果信息String json =EntityUtils.toString(entity,"UTF-8");//JSON的解析过程double [] d = null;List list = new ArrayList();if(json!=null){  try {//获取dataSets数据集JSONArray jsonObjs = new JSONObject(json).getJSONArray("dataSets"); for(int i = 0; i < jsonObjs.length() ; i++){ //获取每个dataSets数据集的名称String dataSetName = jsonObjs.getJSONObject(i).getString("dataSetName");title += dataSetName+",";//通过dataSets数据集来获取datas数据集JSONArray jsonDatas = jsonObjs.getJSONObject(i).getJSONArray("datas"); d = new double[18];for(int j=0;j<jsonDatas.length();j++){//x轴坐标值long x_name = jsonDatas.getJSONObject(j).getLong("x_name");//时间格式转换SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");//转换成字符串String sDateTime = sdf.format(x_name);String y_value = jsonDatas.getJSONObject(j).getString("y_value").replace(".0", "");java.text.DecimalFormat dfromat = new java.text.DecimalFormat("#0.00");  //不足则补零String yvalues = dfromat.format((double)(Math.round(Integer.parseInt(y_value))/10000.0));list.add(Double.parseDouble(yvalues));for(Map.Entry<Integer, String> entry: map.entrySet()) {if(sDateTime.equals(entry.getValue())){renderer.addXTextLabel(entry.getKey(), sDateTime);d[entry.getKey()-1] = Double.parseDouble(yvalues); }else{renderer.addXTextLabel(entry.getKey(), entry.getValue());}}}values.add(d);//如果取不到数据，则默认把X轴坐标显示出来for(int j = 1;j < 19;j++){renderer.addXTextLabel(j, df.format(j+5)+":00");}}//设置Y轴根据数据的最大值自动增长renderer.setYAxisMax((Double)Collections.max(list)+50);/*Double max = (Double)list.get(0);                 Double min = (Double)list.get(0); for(int m=0;m<list.size();m++){if (min > (Double)list.get(m)){ min = (Double)list.get(m);}if (max < (Double)list.get(m)){max = (Double)list.get(m);}}System.out.println("max的值为" + max + "min的值为" + min); */} catch (JSONException e) {e.printStackTrace();}  }} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}  String[] titles = title.substring(0, title.length()-1).split(",");SimpleSeriesRenderer r = new SimpleSeriesRenderer();//r.setDisplayChartValues(true);// 设置是否在主题上方显示值r.setColor(Color.rgb(5, 141, 199));//设置柱状图的颜色renderer.addSeriesRenderer(r);r = new SimpleSeriesRenderer();r.setColor(Color.rgb(0, 88, 220));//设置柱状图的颜色renderer.addSeriesRenderer(r);r = new SimpleSeriesRenderer();r.setColor(Color.rgb(255, 0, 0));//设置柱状图的颜色renderer.addSeriesRenderer(r);Intent intent = ChartFactory.getBarChartIntent(this, chartUtil.buildBarDataset(titles, values), renderer,         Type.DEFAULT);//构建Intent, buildBarDataset是调用AbstractDemochart中的方法.startActivity(intent);finish();}}
更多相关文章

随机推荐
