ArcGIS for Android 10.2.9（10）：加载本地shp文件和shp文件要素查询
1.加载本地shp文件
/**
* 加载本地shp文件
*/
private void getLocalShpfile() {
try {
ShapefileFeatureTable shapefileFeatureTable = new ShapefileFeatureTable(shpPath);
mFeatureLayer = new FeatureLayer(shapefileFeatureTable);
mFeatureLayer.setRenderer(new SimpleRenderer(new SimpleFillSymbol(Color.RED)));
mMapView.addLayer(mFeatureLayer);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}查询api:
featureTable.queryFeatures(QueryParameters query, CallbackListener<FeatureResult> callback)
featureTable.queryIds(QueryParameters query, CallbackListener callback) 2.点击查询shp文件要素
/**
* 点击查询
*/
private void queryShpDataByClick() {
mMapView.setOnSingleTapListener(new OnSingleTapListener() {
@Override
public void onSingleTap(float v, float v1) {
Point point = mMapView.toMapPoint(v, v1);
QueryParameters queryParameters = new QueryParameters();
queryParameters.setGeometry(point);
queryParameters.setReturnGeometry(true);
mFeatureLayer.getFeatureTable().queryFeatures(queryParameters, new CallbackListener() {
@Override
public void onCallback(FeatureResult result) {
if (result != null) {
Iterator 也可采用featureTable.queryIds方法
//也可采用featureTable.queryIds方法
mFeatureLayer.getFeatureTable().queryIds(queryParameters, new CallbackListener<long[]>() {
@Override
public void onCallback(long[] ids) {
if (ids != null && ids.length > 0) {
for (long id : ids) {
Feature feature = mFeatureLayer.getFeature(id);
Map attributes = feature.getAttributes();
Geometry geometry = feature.getGeometry();
Symbol symbol = feature.getSymbol();
//....
}
}
}
@Override
public void onError(Throwable throwable) {
}
}); 3.条件语句查询shp文件要素
/**
* 条件语句查询
*/
private void queryShpDataByWhereClause() {
FeatureTable featureTable = mFeatureLayer.getFeatureTable();
QueryParameters parameters = new QueryParameters();
//查询条件：查询某个字段的值
String whereClause = "FID='921'";
parameters.setWhere(whereClause);
parameters.setReturnGeometry(true);
featureTable.queryFeatures(parameters, new CallbackListener() {
@Override
public void onCallback(FeatureResult result) {
if (result != null) {
Iterator 其他查询方法：
featureLayer.getFeatureIDs(float x, float y, int tolerance):屏幕坐标，半径
mGraphicsLayer.getGraphicIDs(float x, float y, int tolerance)：屏幕坐标，半径GraphicsLayer的点击查询
int[] graphicIds = graphicsLayer.getGraphicIDs(x, y, 8);
if (graphicIds!=null&&graphicIds.length>0) {
for (int i = 0; i < graphicIds.length; i++) {
Graphic graphic = graphicsLayer.getGraphic(graphicIds[i]);
Map<String,Object> attr = graphic.getAttributes();
Log.i(TAG, attr.get("name")+"===="+attr.get("mark"));
}
}