@shilpakaramar
Here is that sample updated with changes commented in the code:
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Add Shapefile</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.36/dijit/themes/claro/claro.css">
<link rel="stylesheet" href="css/app.css">
<link rel="stylesheet" href="css/fileupload.css">
<link rel="stylesheet" href="https://js.arcgis.com/3.36/esri/css/esri.css">
<script src="https://js.arcgis.com/3.36/"></script>
<script>
var map;
require([
"esri/config",
"esri/InfoTemplate",
"esri/map",
"esri/request",
"esri/geometry/scaleUtils",
"esri/layers/FeatureLayer",
"esri/renderers/SimpleRenderer",
"esri/symbols/PictureMarkerSymbol",
"esri/symbols/SimpleFillSymbol",
"esri/symbols/SimpleLineSymbol",
//Added modules
"esri/symbols/TextSymbol",
"esri/layers/LabelClass",
//end add modules
"dojo/dom",
"dojo/json",
"dojo/on",
"dojo/parser",
"dojo/sniff",
"dojo/_base/array",
"esri/Color",
"dojo/_base/lang",
"dijit/layout/BorderContainer",
"dijit/layout/ContentPane",
"dojo/domReady!"
],
function (
esriConfig, InfoTemplate, Map, request, scaleUtils, FeatureLayer,
SimpleRenderer, PictureMarkerSymbol, SimpleFillSymbol, SimpleLineSymbol,
TextSymbol, LabelClass,
dom, JSON, on, parser, sniff, arrayUtils, Color, lang
) {
parser.parse();
var portalUrl = "https://www.arcgis.com";
esriConfig.defaults.io.proxyUrl = "/proxy/";
on(dom.byId("uploadForm"), "change", function (event) {
var fileName = event.target.value.toLowerCase();
if (sniff("ie")) { //filename is full path in IE so extract the file name
var arr = fileName.split("\\");
fileName = arr[arr.length - 1];
}
if (fileName.indexOf(".zip") !== -1) {//is file a zip - if not notify user
generateFeatureCollection(fileName);
}
else {
dom.byId('upload-status').innerHTML = '<p style="color:red">Add shapefile as .zip file</p>';
}
});
map = new Map("mapCanvas", {
basemap: "gray-vector",
center: [-41.647, 36.41],
zoom: 2,
slider: false,
//Set the map to show labels
showLabels : true //very important that this must be set to true!
});
function generateFeatureCollection (fileName) {
var name = fileName.split(".");
//Chrome and IE add c:\fakepath to the value - we need to remove it
//See this link for more info: http://davidwalsh.name/fakepath
name = name[0].replace("c:\\fakepath\\", "");
dom.byId('upload-status').innerHTML = '<b>Loading… </b>' + name;
//Define the input params for generate see the rest doc for details
//http://www.arcgis.com/apidocs/rest/index.html?generate.html
var params = {
'name': name,
'targetSR': map.spatialReference,
'maxRecordCount': 1000,
'enforceInputFileSizeLimit': true,
'enforceOutputJsonSizeLimit': true
};
//generalize features for display Here we generalize at 1:40,000 which is approx 10 meters
//This should work well when using web mercator.
var extent = scaleUtils.getExtentForScale(map, 40000);
var resolution = extent.getWidth() / map.width;
params.generalize = true;
params.maxAllowableOffset = resolution;
params.reducePrecision = true;
params.numberOfDigitsAfterDecimal = 0;
var myContent = {
'filetype': 'shapefile',
'publishParameters': JSON.stringify(params),
'f': 'json',
'callback.html': 'textarea'
};
//use the rest generate operation to generate a feature collection from the zipped shapefile
request({
url: portalUrl + '/sharing/rest/content/features/generate',
content: myContent,
form: dom.byId('uploadForm'),
handleAs: 'json',
load: lang.hitch(this, function (response) {
if (response.error) {
errorHandler(response.error);
return;
}
var layerName = response.featureCollection.layers[0].layerDefinition.name;
dom.byId('upload-status').innerHTML = '<b>Loaded: </b>' + layerName;
addShapefileToMap(response.featureCollection);
}),
error: lang.hitch(this, errorHandler)
});
}
function errorHandler (error) {
dom.byId('upload-status').innerHTML =
"<p style='color:red'>" + error.message + "</p>";
}
function addShapefileToMap (featureCollection) {
//add the shapefile to the map and zoom to the feature collection extent
//If you want to persist the feature collection when you reload browser you could store the collection in
//local storage by serializing the layer using featureLayer.toJson() see the 'Feature Collection in Local Storage' sample
//for an example of how to work with local storage.
var fullExtent;
var layers = [];
arrayUtils.forEach(featureCollection.layers, function (layer) {
var infoTemplate = new InfoTemplate("Details", "${*}");
var featureLayer = new FeatureLayer(layer, {
infoTemplate: infoTemplate,
outFields: ["*"]
});
//associate the feature with the popup on click to enable highlight and zoom to
featureLayer.on('click', function (event) {
map.infoWindow.setFeatures([event.graphic]);
});
//Start code to set labels
// create a text symbol to define the style of labels
var sColor = new Color("#666");
var sLabel = new TextSymbol().setColor(sColor);
sLabel.font.setSize("14pt");
sLabel.font.setFamily("arial");
//this is the very least of what should be set within the JSON
var json = {
"labelExpressionInfo": {"value": "{YourDesiredFieldName}"}
};
//create instance of LabelClass (note: multiple LabelClasses can be passed in as an array)
var labelClass = new LabelClass(json);
labelClass.symbol = sLabel; // symbol also can be set in LabelClass' json
featureLayer.setLabelingInfo([ labelClass ]);
//end changes
//change default symbol if desired. Comment this out and the layer will draw with the default symbology
changeRenderer(featureLayer);
fullExtent = fullExtent ?
fullExtent.union(featureLayer.fullExtent) : featureLayer.fullExtent;
layers.push(featureLayer);
});
map.addLayers(layers);
map.setExtent(fullExtent.expand(1.25), true);
dom.byId('upload-status').innerHTML = "";
}
function changeRenderer (layer) {
//change the default symbol for the feature collection for polygons and points
var symbol = null;
switch (layer.geometryType) {
case 'esriGeometryPoint':
symbol = new PictureMarkerSymbol({
'angle': 0,
'xoffset': 0,
'yoffset': 0,
'type': 'esriPMS',
'url': 'https://static.arcgis.com/images/Symbols/Shapes/BluePin1LargeB.png',
'contentType': 'image/png',
'width': 20,
'height': 20
});
break;
case 'esriGeometryPolygon':
symbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID,
new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color([112, 112, 112]), 1), new Color([136, 136, 136, 0.25]));
break;
}
if (symbol) {
layer.setRenderer(new SimpleRenderer(symbol));
}
}
});
</script>
</head>
<body class="claro">
<div id="mainWindow" data-dojo-type="dijit/layout/BorderContainer" data-dojo-props="design:'headline',gutters:false" style="width:100%; height:100%;">
<div data-dojo-type="dijit/layout/ContentPane" id="rightPane" data-dojo-props="region:'right'">
<div style='padding-left:4px;'>
<p>
Add a zipped shapefile to the map.</p><p>Visit the
<a target='_blank' href="https://doc.arcgis.com/en/arcgis-online/reference/shapefiles.htm">Shapefiles</a> help topic for information and limitations.</p>
<form enctype="multipart/form-data" method="post" id="uploadForm">
<div class="field">
<label class="file-upload">
<span><strong>Add File</strong></span>
<input type="file" name="file" id="inFile" />
</label>
</div>
</form>
<span class="file-upload-status" style="opacity:1;" id="upload-status"></span>
<div id="fileInfo"> </div>
</div>
</div>
<div id="mapCanvas" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'center'"></div>
</div>
</body>
</html>