android功能代码--Android报表控件achartengine介绍(二)

墨蓝 2023-10-16 18:38 14阅读 0赞

Android报achartengine再详细的介绍可以查看

[http://blog.csdn.net/lk\_blog/article/details/7642751][http_blog.csdn.net_lk_blog_article_details_7642751]

在achartengine中两种创建报表的方式

1，是在Activity中直接创建

2 是在Activity的view控件中创建（这种方式更灵活），使用achartengine中GraphicalView控件可以响应点击事件和动态数据的更新。现在只介绍在GraphicalView中创建响应点击事件

Java代码 [ ![复制代码][icon_copy.gif]][_icon_copy.gif] ![收藏代码][icon_star.png]![spinner.gif][]

1.  package com.sinosoft.chartdemo;
2.  
3.  import java.util.ArrayList;
4.  import java.util.List;
5.  import java.util.Random;
6.  
7.  import org.achartengine.ChartFactory;
8.  import org.achartengine.GraphicalView;
9.  import org.achartengine.chart.PointStyle;
10. import org.achartengine.model.SeriesSelection;
11. import org.achartengine.model.XYMultipleSeriesDataset;
12. import org.achartengine.model.XYSeries;
13. import org.achartengine.renderer.XYMultipleSeriesRenderer;
14. import org.achartengine.renderer.XYSeriesRenderer;
15. import org.achartengine.tools.PanListener;
16. import org.achartengine.tools.ZoomEvent;
17. import org.achartengine.tools.ZoomListener;
18. 
19. import android.app.Activity;
20. import android.graphics.Color;
21. import android.graphics.Paint.Align;
22. import android.os.Bundle;
23. import android.util.Log;
24. import android.view.View;
25. import android.view.ViewGroup.LayoutParams;
26. import android.widget.LinearLayout;
27. import android.widget.Toast;
28. 
29. /\*\* 
30.  \* 嵌入Acitivity中的折线图 
31.  \* 
32.  \* @author jianfan 
33.  \* 
34.  \*/
35. public class LineChartActivity extends BasicActivity \{
36. 
37. private XYMultipleSeriesDataset mDataset;
38. private XYMultipleSeriesRenderer mRenderer;
39. private XYSeries mCurrentSeries;
40. private XYSeriesRenderer mCurrentRenderer;
41. private GraphicalView mChartView;
42. 
43. @Override
44. protected void onCreate(Bundle savedInstanceState) \{
45. Log.i("onCreate", "onCreate");
46. super.onCreate(savedInstanceState);
47. setContentView(R.layout.activity\_main);
48. 
49. Init();
50. 
51. \}
52. 
53. /\*\*\*\*\*\*\*\* 
54.  \* 初始化数据DataSet和Renderer 
55.  \*\*\*\*\*/
56. private void Init() \{
57. InitRenderer();
58. InitDataSet();
59. \}
60. 
61. /\*\*\*\*\*\*\*\*\*\*\* 
62.  \* 初始化 XYMultipleSeriesRenderer 
63.  \*\*\*\*\*\*\*\*\*\*/
64. private void InitRenderer() \{
65. 
66. // 每个序列的颜色设置 
67. int\[\] colors = new int\[\] \{ Color.BLUE, Color.GREEN, Color.CYAN, Color.YELLOW \};
68. 
69. // 每个序列中点的形状设置 
70. PointStyle\[\] styles = new PointStyle\[\] \{ PointStyle.CIRCLE, PointStyle.DIAMOND, PointStyle.TRIANGLE, PointStyle.SQUARE \};
71. // 调用AbstractChart中的方法设置renderer. 
72. // 设置线条的颜色和点的形状 
73. mRenderer = buildRenderer(colors, styles);
74. int length = mRenderer.getSeriesRendererCount();
75. 
76. // 设置图上线上的点为实心 
77. for (int i = 0; i < length; i++) \{
78. ((XYSeriesRenderer) mRenderer.getSeriesRendererAt(i)).setFillPoints(true);
79. \}
80. // 调用AbstractChart中的方法设置图表的renderer属性. 
81. setChartSettings(mRenderer, "平均温度", "月份", "温度", 0.5, 12.5, -10, 40, Color.LTGRAY, Color.LTGRAY);
82. // 设置x轴显示12个点,根据setChartSettings的最大值和最小值自动计算点的间隔 
83. mRenderer.setXLabels(12);
84. // 设置y轴显示10个点,根据setChartSettings的最大值和最小值自动计算点的间隔 
85. mRenderer.setYLabels(10);
86. 
87. mRenderer.setBackgroundColor(Color.BLACK);// 设置背景颜色 
88. mRenderer.setApplyBackgroundColor(true); // 使背景色生效 
89. 
90. mRenderer.setShowGrid(true);// 是否显示网格 
91. mRenderer.setXLabelsAlign(Align.RIGHT);// 刻度线与刻度标注之间的相对位置关系 
92. mRenderer.setYLabelsAlign(Align.RIGHT);// 刻度线与刻度标注之间的相对位置关系 
93. mRenderer.setZoomButtonsVisible(true);// 是否显示放大缩小按钮 
94. mRenderer.setPanLimits(new double\[\] \{ -10, 20, -10, 40 \}); // 设置拖动时X轴Y轴允许的最大值最小值. 
95. mRenderer.setZoomLimits(new double\[\] \{ -10, 20, -10, 40 \});// 设置放大缩小时X轴Y轴允许的最大最小值. 
96. \}
97. 
98. /\*\*\*\*\*\*\*\*\*\*\* 
99.  \* 初始化 XYMultipleSeriesDataset 
100.  \*\*\*\*\*\*\*\*\*\*/
101. private void InitDataSet() \{
102. // 图例 
103. String\[\] titles = new String\[\] \{ "克里特岛", "科孚岛", "萨索斯岛", "斯基亚索斯岛" \};
104. // 每个序列中点的X坐标 
105. List<double\[\]> x = new ArrayList<double\[\]>();
106. for (int i = 0; i < titles.length; i++) \{
107. x.add(new double\[\] \{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 \});
108. \}
109. // titles数组中每个标识物对应的线条 
110. List<double\[\]> values = new ArrayList<double\[\]>();
111. // 克里特岛的点的y坐标 
112. values.add(new double\[\] \{ 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4, 26.1, 23.6, 20.3, 17.2, 13.9 \});
113. // 科孚岛的点的y坐标 
114. values.add(new double\[\] \{ 10, 10, 12, 15, 20, 24, 26, 26, 23, 18, 14, 11 \});
115. // 萨索斯岛的点的y坐标 
116. values.add(new double\[\] \{ 5, 5.3, 8, 12, 17, 22, 24.2, 24, 19, 15, 9, 6 \});
117. // 斯基亚索斯岛的点的y坐标 
118. values.add(new double\[\] \{ 9, 10, 11, 15, 19, 23, 26, 25, 22, 18, 13, 10 \});
119. mDataset = buildDataset(titles, x, values);
120. \}
121. 
122. /\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 
123.  \* 当Activity失去焦点的时候用来保存数据的方法 
124.  \*/
125. @Override
126. protected void onSaveInstanceState(Bundle outState) \{
127. Log.i("onSaveInstanceState", "onSaveInstanceState");
128. 
129. super.onSaveInstanceState(outState);
130. outState.putSerializable("dataset", mDataset);
131. 
132. outState.putSerializable("renderer", mRenderer);
133. 
134. outState.putSerializable("current\_series", mCurrentSeries);
135. 
136. outState.putSerializable("current\_renderer", mCurrentRenderer);
137. 
138. \}
139. 
140. /\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 
141.  \* 当Activity重新获取焦点的时，取回之前保存的数据 
142.  \*/
143. @Override
144. protected void onRestoreInstanceState(Bundle savedInstanceState) \{
145. Log.i("onRestoreInstanceState", "onRestoreInstanceState");
146. 
147. super.onRestoreInstanceState(savedInstanceState);
148. 
149. mDataset = (XYMultipleSeriesDataset) savedInstanceState.getSerializable("dataset");
150. 
151. mRenderer = (XYMultipleSeriesRenderer) savedInstanceState.getSerializable("renderer");
152. 
153. mCurrentSeries = (XYSeries) savedInstanceState.getSerializable("current\_series");
154. 
155. mCurrentRenderer = (XYSeriesRenderer) savedInstanceState.getSerializable("current\_renderer");
156. 
157. \}
158. 
159. @Override
160. protected void onResume() \{
161. Log.i("onResume", "onResume");
162. super.onResume();
163. if (mChartView == null) \{
164. LinearLayout layout = (LinearLayout) findViewById(R.id.chart);
165. mChartView = ChartFactory.getLineChartView(this, mDataset, mRenderer);
166. mRenderer.setClickEnabled(true);// 设置图表是否允许点击 
167. // 设置点的缓冲半径值(在某点附件点击时,多大范围内都算点击这个点) 
168. mRenderer.setSelectableBuffer(10);
169. mChartView.setOnClickListener(new View.OnClickListener() \{
170. @Override
171. public void onClick(View v) \{
172. // 这段代码处理点击一个点后,获得所点击的点在哪个序列中以及点的坐标. 
173. // -->start 
174. 
175. SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();
176. double\[\] xy = mChartView.toRealPoint(0);
177. if (seriesSelection == null) \{
178. Toast.makeText(LineChartActivity.this, "没有图表元素被点击", Toast.LENGTH\_SHORT).show();
179. \} else \{
180. Toast.makeText(LineChartActivity.this, "图表元素系列指数 " \+ seriesSelection.getSeriesIndex() + " 数据点指数 " \+ seriesSelection.getPointIndex() + " 被点击了" \+ " 最近点值X=" \+ seriesSelection.getXValue() + ", 最近点值Y=" \+ seriesSelection.getValue() + " 点击点值X=" \+ (float) xy\[0\] + ", 点击点值Y=" \+ (float) xy\[1\], Toast.LENGTH\_SHORT).show();
181. \}
182. \}
183. // -->end 
184. 
185. \});
186. mChartView.setOnLongClickListener(new View.OnLongClickListener() \{
187. @Override
188. public boolean onLongClick(View v) \{
189. SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();
190. if (seriesSelection == null) \{
191. Toast.makeText(LineChartActivity.this, "No chart element was long pressed", Toast.LENGTH\_SHORT);
192. return false; // no chart element was long pressed, so 
193. // let something 
194. // else handle the event 
195. \} else \{
196. Toast.makeText(LineChartActivity.this, "Chart element in series index " \+ seriesSelection.getSeriesIndex() + " data point index " \+ seriesSelection.getPointIndex() + " was long pressed", Toast.LENGTH\_SHORT);
197. return true; // the element was long pressed - the event 
198. // has been 
199. // handled 
200. \}
201. \}
202. \});
203. // 这段代码处理放大缩小 
204. // -->start 
205. mChartView.addZoomListener(new ZoomListener() \{
206. public void zoomApplied(ZoomEvent e) \{
207. String type = "out";
208. if (e.isZoomIn()) \{
209. type = "in";
210. \}
211. System.out.println("Zoom " \+ type + " rate " \+ e.getZoomRate());
212. \}
213. 
214. public void zoomReset() \{
215. System.out.println("Reset");
216. \}
217. \}, true, true);
218. // -->end 
219. // 设置拖动图表时后台打印出图表坐标的最大最小值. 
220. 
221. mChartView.addPanListener(new PanListener() \{
222. public void panApplied() \{
223. System.out.println("New X range=\[" \+ mRenderer.getXAxisMin() + ", " \+ mRenderer.getXAxisMax() + "\], Y range=\[" \+ mRenderer.getYAxisMax() + ", " \+ mRenderer.getYAxisMax() + "\]");
224. \}
225. \});
226. layout.addView(mChartView, new LayoutParams(LayoutParams.FILL\_PARENT, LayoutParams.FILL\_PARENT));
227. boolean enabled = mDataset.getSeriesCount() > 0;
228. 
229. \} else \{
230. mChartView.repaint();
231. 
232. \}
233. \}
234. 
235. \}

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