Question

我正在尝试使用arcgis-java（ArcGIS Runtime）查询ArcGIS Online要素图层，如下所示：

ServiceFeatureTable featureTable = new ServiceFeatureTable(this.SERVICE_FEATURE_URL);
QueryParameters query = new QueryParameters();
query.setWhereClause("1=1");
query.setReturnGeometry(true);
ListenableFuture<FeatureQueryResult> queryFeaturesAsync = featureTable.queryFeaturesAsync(query);
try {
    FeatureQueryResult result = queryFeaturesAsync.get();
    Iterator<Feature> iterator = result.iterator();
    if (iterator.hasNext()) {
        Feature feature = iterator.next();
        System.out.println(feature.getAttributes());
        System.out.println(feature.getGeometry());
    }
} catch (Exception e) {
    e.printStackTrace();
}

但即使图层具有多个功能，它也始终只返回一个功能。我怎样才能获得多个功能？

我也尝试设置setMaxFeatures，但没有效果。

主要的是我没有创建FeatureLayer和MapView对象，也没有在MapView上添加FeatureLayer。我只想查询ServiceFeatureTable。

Answer 1

我认为它正在返回所有功能，但你只是看第一个。尝试更改Function HighlightRows() As Long Dim c As Long Dim i As Long Dim w As Worksheet Set w = ThisWorkbook.Worksheets("Sheet1") c = 0 For i = 2 To w.UsedRange.Rows.Count If w.Cells(i, 11).Value = 1 Then c = c + 1 w.Rows(i).Interior.ColorIndex = 3 End If Next i HighlightRows = c End Function：

if

到if (iterator.hasNext()) {：

while

ArcGIS Java ServiceFeatureTable查询始终只返回1个要素

1 个答案: