i created featureLayer based on a feature collection; and i added this featureLayer to my map; then i query features by Extent and objectId and my code return list features but not set symbol of features? how to set symbol of features returned from the query feature collection featurelayer;
below mycode:
require(["esri/map",
"esri/layers/ArcGISTiledMapServiceLayer",
"esri/dijit/PopupTemplate",
"esri/layers/FeatureLayer",
"esri/tasks/query",
"esri/geometry/Circle",
"esri/graphic",
"esri/InfoTemplate",
"esri/symbols/SimpleMarkerSymbol",
"esri/symbols/SimpleLineSymbol",
"esri/symbols/SimpleFillSymbol",
"esri/Color",
"esri/renderers/SimpleRenderer",
"esri/geometry/Point",
"dojo/_base/array",
"dojo/on",
"dojo/dom",
"esri/layers/ArcGISDynamicMapServiceLayer",
"dojo/domReady!"],
function (Map,
ArcGISTiledMapServiceLayer,
PopupTemplate,
FeatureLayer,
Query,
Circle,
Graphic,
InfoTemplate,
SimpleMarkerSymbol,
SimpleLineSymbol,
SimpleFillSymbol,
Color,
SimpleRenderer,
Point,
arrayUtils,
on,
dom,
ArcGISDynamicMapServiceLayer) {
var map;
var featureLayer;
map = new Map("mapDiv", {
});
var tiled = new ArcGISTiledMapServiceLayer("url");
map.addLayers([tiled]);
var symbol = new SimpleMarkerSymbol(
SimpleMarkerSymbol.STYLE_CIRCLE,
12,
new SimpleLineSymbol(
SimpleLineSymbol.STYLE_NULL,
new Color([247, 34, 101, 0.9]),
1
),
new Color([207, 34, 171, 0.5])
);
var circle;
var circleSymb = new SimpleFillSymbol(
SimpleFillSymbol.STYLE_NULL,
new SimpleLineSymbol(
SimpleLineSymbol.STYLE_SHORTDASHDOTDOT,
new Color([105, 105, 105]),
2
), new Color([255, 255, 0, 0.25])
);
var fields = [
{
name: "ObjectID",
alias: "ObjectID",
type: "esriFieldTypeOID"
}, {
name: "matrai",
alias: "matrai",
type: "esriFieldTypeString"
}
, {
name: "tentrai",
alias: "tentrai",
type: "esriFieldTypeString"
}
, {
name: "loaiTrangTrai",
alias: "loaiTrangTrai",
type: "esriFieldTypeString"
}
];
var pTemplate = new PopupTemplate({
title: "{tentrai}",
description: "{loaiTrangTrai}"
});
map.on("layers-add-result", function () {
$.ajax({
type: "POST",
url: "trangchu.aspx/GetPointJsonString",
contentType: "application/json; charset=utf-8",
dataType: "json", // dataType is json format
success: function (data) {
var obj = JSON.parse(data.d);
var features = [];
$.each(obj, function (index, val) {
index = index + 1;
var feature = {
geometry: new Point({
x: val.toadox,
y: val.toadoy,
spatialReference: map.spatialReference
}),
// select only the attributes you care about
attributes: {
ObjectID: index,
matrai: val.matrai,
tentrai: val.tentrai,
loaiTrangTrai: val.loaiTrangTrai
}
};
features.push(feature);
});
var featureCollection = {
"layerDefinition": {
"geometryType": "esriGeometryPoint",
"objectIdField": "ObjectID",
"drawingInfo": {
"renderer": {
"type": "simple",
"symbol": {
"type": "esriPMS",
"url": "Images/GreenPin1LargeB.png",
"contentType": "image/png",
"width": 12,
"height": 12
}
}
},
"fields": fields
},
"featureSet": {
"features": features,
"geometryType": "esriGeometryPoint"
}
};
featureLayer = new FeatureLayer(featureCollection, {
id: 'trangtraiheo',
allowGeometryUpdates: true,
infoTemplate: pTemplate
});
map.addLayers([featureLayer]);
featureLayer.on("Click", function (evt) {
// map.infoWindow.setFeatures([evt.graphic]);
});
},
error: function (errorText) {
alert(errorText);
}
});
});
map.on("Click", function (evt) {
circle = new Circle({
center: evt.mapPoint,
radius: 1,
radiusUnit: "esriMiles"
});
map.graphics.clear();
map.infoWindow.hide();
var graphic = new Graphic(circle, circleSymb);
map.graphics.add(graphic);
var query = new Query();
query.geometry = circle.getExtent();
featureLayer.queryFeatures(query, selectInBuffer);
});
function selectInBuffer(response) {
var feature;
var features
features = response.features;
var inBuffer = [];
for (var i = 0; i < features.length; i++) {
feature = features;
if (circle.contains(feature.geometry)) {
inBuffer.push(feature.attributes[featureLayer.objectIdField]);
}
}
var query = new Query();
query.objectIds = inBuffer;
featureLayer.selectFeatures(query, FeatureLayer.SELECTION_NEW, function (results) {
featureLayer.setSelectionSymbol(symbol);
});
}
});
