Question

我做了一个课来解析室内的GML信息。室内GML有5层。所有部件都有效。在第五层，我需要调用一个名为posList的标签：

        <indoorCore:CellSpace gml:id='L5C1'>
        <indoorCore:Geometry2D>
        <gml:Polygon >
        <gml:exterior>
        <gml:LinearRing>
    <gml:posList>529.0 840.25 529.0 803.51 540.0 803.51</gml:posList>
    </gml:LinearRing>
        </gml:exterior>
        </gml:Polygon>
        </indoorCore:Geometry2D>
        <indoorCore:PartialboundedBy>
        <indoorCore:CellSpaceBoundary gml:id='L5B1'>
        <indoorCore:geometry2D>
        <gml:LineString>
    <gml:posList>540.0 803.51 529.0 803.51 529.0 840.25</gml:posList>
    </gml:LineString>
        </indoorCore:geometry2D>
        <indoorCore:duality>
        <indoorCore:Transition xlink:href='#L5T1'/>
        </indoorCore:duality>
        </indoorCore:CellSpaceBoundary>

我需要标签posList里面的标签多边形内的点。我写了这样的解析：

 while (eventType != XmlPullParser.END_DOCUMENT) {

        switch (eventType) {
            case XmlPullParser.START_TAG:
                currentTagName = parser.getName();
                if (currentTagName.equals("gml:Polygon")) {
                    inPolygon = true;
                } else if (currentTagName.equals("indoorCore:SpaceLayer")) {
                    String layer = parser.getAttributeValue(0);
                    currentLayer = layer;
                    if (layer.equals("L5")) {
                       startOfFifthLayer = true;
                    }
                } else if(currentTagName.equals("gml:name")) {
                    inName = true;
                    // inNodes=true;
                    // Log.d("name", "true");
                }

                    if(currentTagName.equals("gml:posList")) {

                        inLayerFivePolygon = true;

                        Log.d("Polygon5", "true");

                }
                break;
            case XmlPullParser.END_TAG:
                if (currentTagName.equals("indoorCore:SpaceLayer")) {
                    String layer = parser.getAttributeValue(0);
                    currentLayer = layer;
                    currentTagName = parser.getName();
                    if(currentLayer.equals("L5")) {
                        endOfFifthLayer = true;
                    }
                }


                break;
            case XmlPullParser.TEXT:
                if (inName) {
                    // put posList points in an array
                    String points = parser.getText();
                            Log.d("PlaceName MapPlace", points);
                    String[] split = points.split(" ");
                    inName=false;

                } else if(inLayerFivePolygon){
                    String points = parser.getText();
                          Log.d("Area MapPlace", points);
                    String[] split = points.split(" ");
                    inLayerFivePolygon=false;
                }
                break;
        }
        if (endOfFifthLayer) {
            break;
        }
        eventType = parser.next();
    }
}

当我只解析标签posList时，我的程序可以读取这些点。但是，当我想过滤它并将其放在多边形标记内时，它不会在日志中显示给我的点。

你知道诀窍是什么吗？非常感谢！

Answer 1

我通过更改XmlPullParser.START_TAG案例中测试图层的条件来解决它：

            else if (currentTagName.equals("indoorCore:SpaceLayer")) {
                    String layer = parser.getAttributeValue(0);
                    currentLayer = layer;
                    if (!layer.equals("L5")) {
                       inFifthLayer = false;
                    }else {
                        inFifthLayer = true;
                        startOfFifthLayer = true;
                    }

然后为了控制标签，而且测试标签，我再次控制图层，如下所示：

         if(currentTagName.equals("gml:posList") && inFifthLayer) {

                    inLayerFivePolygon = true;

                    Log.d("Polygon5", "true");

                }

最后在XmlPullParser.TEXT中，我解析了我需要的点：

      XmlPullParser.TEXT:
                if(inLayerFivePolygon){
                    String points = parser.getText();

                    String[] split = points.split(" ");
                    //ArrayList<String> finalPoints = convertToPolygon(points);
                   // Log.d("Area MapPlace", finalPoints.toString());
                    Log.d("Area MapPlace2", points);

                  inLayerFivePolygon=false;

                }

解析Android studio中的IndoorGML并没有向我显示特定的标记

1 个答案: