小编给大家分享一下achartengine如何实现平行线、动态数据、x轴动态移动,希望大家阅读完这篇文章之后都有所收获,下面让我们一起去探讨吧!
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achartengine做平行线的时候经常会遇到:
java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
at org.achartengine.renderer.DefaultRenderer.getSeriesRendererAt(DefaultRenderer.java:189)
at org.achartengine.chart.XYChart.draw(XYChart.java:240)
at org.achartengine.GraphicalView.onDraw(GraphicalView.java:168)
***在stackoverflow找到了答案:1个数据就要用一个XYSeriesRenderer 所以两条平行线就要用2个XYSeriesRenderer
***效果图:
1 package com.example.achartparallel; 2 3 4 import com.example.achartparallel.XYRenderer; 5 6 7 import java.math.BigDecimal; 8 import java.text.DecimalFormat; 9 10 import org.achartengine.ChartFactory; 11 import org.achartengine.GraphicalView; 12 import org.achartengine.chart.PointStyle; 13 import org.achartengine.model.XYMultipleSeriesDataset; 14 import org.achartengine.model.XYSeries; 15 import org.achartengine.renderer.XYMultipleSeriesRenderer; 16 import org.achartengine.renderer.XYSeriesRenderer; 17 18 19 import android.app.Activity; 20 import android.app.AlertDialog; 21 import android.content.Context; 22 import android.content.DialogInterface; 23 import android.content.Intent; 24 import android.graphics.Color; 25 import android.os.Bundle; 26 import android.os.Handler; 27 import android.os.Message; 28 import android.view.LayoutInflater; 29 import android.view.Menu; 30 import android.view.MenuItem; 31 import android.view.View; 32 import android.view.View.OnClickListener; 33 import android.view.ViewGroup.LayoutParams; 34 import android.view.Window; 35 import android.view.WindowManager; 36 import android.widget.Button; 37 import android.widget.EditText; 38 import android.widget.LinearLayout; 39 import android.widget.TextView; 40 import android.widget.Toast; 41 42 public class MainActivity extends Activity { 43 44 45 private XYSeries xyseries;//数据 46 private XYSeries xyseries_up;//上平行线 47 private XYSeries xyseries_down;//下平行线 48 private XYMultipleSeriesDataset dataset; 49 private GraphicalView chartview; 50 private XYMultipleSeriesRenderer renderer; 51 private XYSeriesRenderer datarenderer; 52 private XYSeriesRenderer datarenderer_up; 53 private XYSeriesRenderer datarenderer_down; 54 private Context context; 55 56 int i=0; 57 Thread t; 58 private int addX ; 59 private double addY ; 60 int X_MAX=10;//x轴***值 61 62 //标准和阈值 63 double value=10 ;//平行线中间值 64 double bound=0.5;//上下限 可以自己随意设定 65 protected void onCreate(Bundle savedInstanceState) { 66 super.onCreate(savedInstanceState); 67 requestWindowFeature(Window.FEATURE_NO_TITLE); //无title 68 setContentView(R.layout.activity_main); 69 LinearLayout chart_layout1 = (LinearLayout)findViewById(R.id.chart_layout1); 70 chart_layout1.setBackgroundColor(Color.BLACK); 71 72 73 //No.1 设定大渲染器的属性 太多了 所以写了个类 74 renderer=new XYRenderer("零件", "X轴(单位:id)", "Y轴(mm)", 75 0,X_MAX, -1, 1, Color.GRAY, Color.LTGRAY, 76 16,16,10,15,20,10,true); 77 dataset=new XYMultipleSeriesDataset(); 78 datarenderer=new XYSeriesRenderer(); 79 datarenderer.setDisplayChartValues(true); 80 xyseries=new XYSeries("零件"); 81 //2 82 xyseries.add(0, 0);//先输入一个数据让它绘出renderer 83 //3 84 dataset.addSeries(0,xyseries); 85 datarenderer.setColor(Color.GREEN); 86 datarenderer.setPointStyle(PointStyle.POINT); 87 //4 88 renderer.addSeriesRenderer(datarenderer); 89 90 //5 91 context = getApplicationContext(); 92 chartview = ChartFactory.getLineChartView(context, dataset, renderer); 93 chart_layout1.addView(chartview, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); 94 95 //设置按钮 用来记录尺寸的标准(value)和阈值(bound),然后再主界面显示出红线 96 97 //绘出两条红线 分别用新的XYSeriesRenderer要不然会报错 98 xyseries_up=new XYSeries("阈值1"); 99 xyseries_down=new XYSeries("阈值2"); 100 xyseries_up.add(0 , value+bound); 101 xyseries_up.add(X_MAX*2, value+bound); 102 xyseries_down.add(0, value-bound); 103 xyseries_down.add(X_MAX*2,value-bound); 104 dataset.addSeries(1,xyseries_up); 105 dataset.addSeries(2,xyseries_down); 106 datarenderer_up = new XYSeriesRenderer(); 107 datarenderer_down = new XYSeriesRenderer(); 108 datarenderer_up.setColor(Color.RED); 109 datarenderer_down=datarenderer_up; 110 renderer.addSeriesRenderer(datarenderer_up); 111 renderer.addSeriesRenderer(datarenderer_down); 112 renderer.setYAxisMin(value-(4*bound));// Y最小值 113 renderer.setYAxisMax(value+(4*bound));// Y最小值 114 //设置chart的视图范围 参数//1x->start 2max 3y->start 4max 115 renderer.setRange(new double[]{0d, (double)X_MAX, value-(4*bound), value+(4*bound)}); 116 // chartview.repaint(); 117 118 119 120 121 122 123 124 125 t=new Thread (r1); 126 t.start(); 127 128 }//oncreate end 129 130 //handler处理UI更新 131 Handler myhandler=new Handler() 132 { 133 134 @Override 135 public void handleMessage(Message msg) { 136 super.handleMessage(msg); 135//可以处理些数据 142 chartview.repaint(); 143 } 144 145 146 }; 147 148 149 Runnable r1=new Runnable() { 150 BigDecimal b; 151 152 public void run(){ 153 try { 154 while(true) 155 { 156 i++; 157 Thread.sleep(500); 158 addX = i; 159 //设置好下一个需要增加的节点 随机产生 在value+-bound左右 160 b =new BigDecimal(((Math.random())*bound*4)-(2*bound)); //转换 161 addY=b.setScale(3, BigDecimal.ROUND_HALF_UP).doubleValue(); 162 //double+double再转一次 163 b =new BigDecimal(addY+value); //保留三位小数 四舍五入 164 addY=b.setScale(3, BigDecimal.ROUND_HALF_UP).doubleValue(); 165 166 //传给hanlder 167 Message message=new Message(); 168 Bundle bundle=new Bundle(); 169 bundle.putString("part_id1", "编号:"+addX); 170 bundle.putString("part_size1", "尺寸:"+addY); 171 message.setData(bundle);//bundle传值,耗时,效率低 172 myhandler.sendMessage(message);//发送message信息 173 message.what=1;//标志是哪个线程传数据 174 175 176 //步骤不能变 1先清除数据 2添加源数据 3添加数据 177 dataset.removeSeries(xyseries); 178 xyseries.add(addX, addY); 179 dataset.addSeries(0,xyseries); 180 //chartview.repaint(); 181 chartview.postInvalidate(); 182 183 184 if(i*2>X_MAX)//延长X_MAX造成右移效果 185 { 186 X_MAX*=2;//按2倍速度延长 可以设置成speed 187 renderer.setXAxisMax(X_MAX);// 设置X***值 188 dataset.removeSeries(xyseries_up); 189 dataset.removeSeries(xyseries_down); 190 xyseries_up.add(X_MAX/2 , value+bound); 191 xyseries_up.add(X_MAX, value+bound); 192 xyseries_down.add(X_MAX/2, value-bound); 193 xyseries_down.add(X_MAX,value-bound); 194 dataset.addSeries(1,xyseries_up); 195 dataset.addSeries(2,xyseries_down); 196 // datarenderer_up = new XYSeriesRenderer(); 197 // datarenderer_down = new XYSeriesRenderer(); 198 // datarenderer_up.setColor(Color.RED); 199 // datarenderer_down=datarenderer_up; 200 renderer.addSeriesRenderer(datarenderer_up); 201 renderer.addSeriesRenderer(datarenderer_down); 202 } 203 204 205 } 206 } catch (InterruptedException e) { 207 e.printStackTrace(); 208 } 209 210 } 211 }; 212 @Override 213 protected void onDestroy() { 214 t.interrupt(); 215 System.out.println("destory"); 216 super.onDestroy(); 217 } 218 219 220 }
1 package com.example.achartparallel;
2
3 import org.achartengine.renderer.XYMultipleSeriesRenderer;
4
5 public class XYRenderer extends XYMultipleSeriesRenderer
6 {
7 //图表样式构造器
8 public XYRenderer()
9 {
10
11 }
12 public XYRenderer(
13 String title, String xTitle, String yTitle, double xMin,
14 double xMax, double yMin, double yMax, int axesColor,
15 int labelsColor,int XTitleTextSize,int ChartTitleTextSize,
16 int LabelsTextSize,int LegendTextSize,int Xshow,int Yshow,
17 boolean ShowGrid)
18 {
19 this.setChartTitle(title);
20 this.setXTitle(xTitle);// X轴标题
21 this.setYTitle(yTitle);// Y轴标题
22 this.setXAxisMin(xMin);// X最小值
23 this.setXAxisMax(xMax);// X***值
24 this.setYAxisMin(yMin);// Y最小值
25 this.setYAxisMax(yMax);// Y最小值
26 this.setAxesColor(axesColor);// X轴颜色
27 this.setLabelsColor(labelsColor);// Y轴颜色
28 this.setAxisTitleTextSize(XTitleTextSize); // 坐标轴标题字体大小:16
29 this.setChartTitleTextSize(ChartTitleTextSize); // 图表标题字体大小:20
30 this.setLabelsTextSize(LabelsTextSize); // 轴标签字体大小:10
31 this.setLegendTextSize(LegendTextSize); // 图例字体大小:15
32 this.setXLabels(Xshow);//设置X轴显示的刻度标签的个数
33 this.setYLabels(Yshow);//设置Y轴显示的刻度标签的个数
34 this.setShowGrid(ShowGrid); // 设置网格显示
35
36
37 }
38
39 }
111 12 13 14
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