刷新活动

你好，我有以下类来显示图，因为它可以在代码中看到我使用它的一些随机值，我们如何刷新此活动在每一秒获得移动图。由于刷新活动

public class SalesGrowthChart extends AbstractDemoChart { 

    public String getName() { 
    return "Sales growth"; 
    } 


    public String getDesc() { 
    return "The sales growth across several years (time chart)"; 
    } 


    public Intent execute(Context context) { 
    String[] titles = new String[] { "Sales growth January 1995 to December 2000" }; 
    List<Date[]> dates = new ArrayList<Date[]>(); 
    List<double[]> values = new ArrayList<double[]>(); 
    Date[] dateValues = new Date[] { new Date(95, 0, 1), new Date(95, 3, 1), new Date(95, 6, 1), 
     new Date(95, 9, 1), new Date(96, 0, 1), new Date(96, 3, 1), new Date(96, 6, 1), 
     new Date(96, 9, 1), new Date(97, 0, 1), new Date(97, 3, 1), new Date(97, 6, 1), 
     new Date(97, 9, 1), new Date(98, 0, 1), new Date(98, 3, 1), new Date(98, 6, 1), 
     new Date(98, 9, 1), new Date(99, 0, 1), new Date(99, 3, 1), new Date(99, 6, 1), 
     new Date(99, 9, 1), new Date(100, 0, 1), new Date(100, 3, 1), new Date(100, 6, 1), 
     new Date(100, 9, 1), new Date(100, 11, 1) }; 
    dates.add(dateValues); 

    values.add(new double[] { (int) (Math.random() * 4), (int) (Math.random() * 4),(int) (Math.random() * 4), (int) (Math.random() * 4), (int) (Math.random() * 4), (int) (Math.random() * 4) }); 
    int[] colors = new int[] { Color.BLUE }; 
    PointStyle[] styles = new PointStyle[] { PointStyle.POINT }; 
    XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles); 
    setChartSettings(renderer, "Sales growth", "Date", "%", dateValues[0].getTime(), 
     dateValues[dateValues.length - 1].getTime(), -4, 11, Color.GRAY, Color.LTGRAY); 
    renderer.setYLabels(10); 
    return ChartFactory.getTimeChartIntent(context, buildDateDataset(titles, dates, values), 
     renderer, "MMM yyyy"); 
    } 

}

来源

2011-07-31 user667340

你要在你的主要活动，以创建一个新的线程，像这样：

public class myActivity extends Activity { 
    boolean graphActive = true; 

    public void onCreate(Bundle icicle) { 
     super.onCreate(icicle); 

     new Thread(new Runnable() { 
      public void run() { // Process to keep running 
       while (graphActive) { 
        SalesGrowthChart.execute(); 
        try { 
         Thread.sleep(1000) // sleeps for 1 second 
        } catch (Error e) { 
        } 
       } 
      }}).start(); 

     } 
}

你可以通过设置graphActive =假希望这有助于随时随地杀死线程。 :)

来源

2011-07-31 04:42:14

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