在Android中json数据十分普遍,也很实用,在Arcgis中也同样支持Json数据,Json与Geometry可以相互转换,达到我们想要的数据. 一.Geometry转换成Json数据 这个实现十分简单,比如我们将一个点转换为Json,这时也同样用到GeometryEngine这个强大的类. Point point = new Point(113, 23); String json = GeometryEngine.geometryToJson(SpatialReference.creat
在使用JSONObject.fromObject的时候,出现“There is a cycle in the hierarchy”异常. 意思是出现了死循环,也就是Model之间有循环包含关系: 解决办法: 使用setCycleDetectionStrategy防止自包含 代码: JsonConfig jsonConfig=new JsonConfig(); jsonConfig.setIgnoreDefaultExcludes(false); jsonConfig.se
项目中,已经获取到服务器返回的XML,并且已经解析. value= (String) result.getProperty("Value").toString().trim();JSONObject obj = new JSONObject(value);JSONArray jsonArray = obj.getJSONArray("Event"); 在做jsonArray解析的时候 for (int i = 0; i < jsonArray.length()
You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 9596 Accepted Submission(s): 4725 Problem Description Many geometry(几何)problems were designed in the ACM/I
public Object put (Object key, Object value) 将value映射到key下.如果此JSONObject对象之前存在一个value在这个key下,当前的value会替换掉之前的value Associates the specified value with the specified key in this map(optional operation). If the map previously contained . a mapping for t
<Differential Geometry of Curves and Surfaces> by Manfredo P. do Carmo real line Rinterval I==============================================CH1 CurvesDEFINITION. A parametrized differentiable curve is a differentiable map a: I --> R3 of [an open in