Hi everyone,
I'm trying to render a WebTileLayer inside a MapView using ArcGIS API for JavaScript.
My goal is to use raster tiles completely offline.
The tiles are pre-generated (z/x/y structure) and served locally via a simple Node.js + Express static server.
Tile structure
My tiles are organized like this:
/tiles /0 /1 /2 ... /14 /x y.png
Example URL that works directly in the browser:
Tiles are 256x256 PNG in Web Mercator (EPSG:3857).
WebTileLayer configuration
Then I assign it as the basemap:
this.map.basemap = new Basemap({ baseLayers: [webTileLayer] });
The SceneView is using Web Mercator spatial reference (3857), and the LODs are standard Web Mercator LODs (0–23).
i give you the print of my currentLayer
{
"fullExtent": {
"spatialReference": {
"latestWkid": 3857,
"wkid": 102100
},
"xmin": -20037508.342787,
"ymin": -20037508.34278,
"xmax": 20037508.34278,
"ymax": 20037508.342787
},
"id": "19c512d415e-layer-1",
"listMode": "show",
"title": "Layer",
"visibility": true,
"layerType": "WebTiledLayer",
"minScale": 0,
"maxScale": 0,
"refreshInterval": 0,
"blendMode": "normal",
"copyright": "",
"tileInfo": {
"compressionQuality": 0,
"dpi": 96,
"format": "PNG8",
"origin": {
"spatialReference": {
"latestWkid": 3857,
"wkid": 102100
},
"x": -20037508.342787,
"y": 20037508.342787
},
"lods": [
{
"level": 0,
"resolution": 156543.033928,
"scale": 591657527.591555
},
{
"level": 1,
"resolution": 78271.5169639999,
"scale": 295828763.795777
},
{
"level": 2,
"resolution": 39135.7584820001,
"scale": 147914381.897889
},
{
"level": 3,
"resolution": 19567.8792409999,
"scale": 73957190.948944
},
{
"level": 4,
"resolution": 9783.93962049996,
"scale": 36978595.474472
},
{
"level": 5,
"resolution": 4891.96981024998,
"scale": 18489297.737236
},
{
"level": 6,
"resolution": 2445.98490512499,
"scale": 9244648.868618
},
{
"level": 7,
"resolution": 1222.99245256249,
"scale": 4622324.434309
},
{
"level": 8,
"resolution": 611.49622628138,
"scale": 2311162.217155
},
{
"level": 9,
"resolution": 305.748113140558,
"scale": 1155581.108577
},
{
"level": 10,
"resolution": 152.874056570411,
"scale": 577790.554289
},
{
"level": 11,
"resolution": 76.4370282850732,
"scale": 288895.277144
},
{
"level": 12,
"resolution": 38.2185141425366,
"scale": 144447.638572
},
{
"level": 13,
"resolution": 19.1092570712683,
"scale": 72223.819286
},
{
"level": 14,
"resolution": 9.55462853563415,
"scale": 36111.909643
},
{
"level": 15,
"resolution": 4.77731426794937,
"scale": 18055.954822
},
{
"level": 16,
"resolution": 2.38865713397468,
"scale": 9027.977411
},
{
"level": 17,
"resolution": 1.19432856685505,
"scale": 4513.988705
},
{
"level": 18,
"resolution": 0.597164283559817,
"scale": 2256.994353
},
{
"level": 19,
"resolution": 0.298582141647617,
"scale": 1128.497176
},
{
"level": 20,
"resolution": 0.14929107082380833,
"scale": 564.248588
},
{
"level": 21,
"resolution": 0.07464553541190416,
"scale": 282.124294
},
{
"level": 22,
"resolution": 0.03732276770595208,
"scale": 141.062147
},
{
"level": 23,
"resolution": 0.01866138385297604,
"scale": 70.5310735
}
],
"cols": 256,
"rows": 256,
"spatialReference": {
"latestWkid": 3857,
"wkid": 102100
}
},
}
The issue
The layer loads without errors
No console errors
The layer appears in the map layers
But no network requests are triggered
Nothing appears in the browser Network tab
It seems like the layer is not even attempting to fetch tiles.
