got the solution: let baseLayer = AGSArcGISVectorTiledLayer(url: yourUrl) let map = AGSMap(basemap: AGSBasemap(baseLayer: baseLayer)) if let mapExtend = baseLayer.fullExtent { map.initialViewpoint = AGSViewpoint(targetExtent: AGSEnvelope(xMin: mapExtend.xMin, yMin: mapExtend.yMin, xMax: mapExtend.xMax, yMax: mapExtend.yMax, spatialReference: AGSSpatialReference.wgs84())) }
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