WebTiledLayer and PrintTask working at 10.2?

deleted-user-Jie3eyjOl9XM

I've seen some others discuss, but no answers. I've got a WebTiledLayer, which is working great. But, when I print using the standard Print task, the layer isn't there. I can see it's being sent over in the JSON. But, I can also see that the JSON doesn't include the LOD's. And, those should be required by the Print Task. Had anyone had success?

deleted-user-Jie3eyjOl9XM

Yes, I've worked this out. It seems like it can't be done "out of the box". The ESRI print dijit, which creates the webMapAsJson, does not include the TileInfo your the WebTiledLayer. You'll have to capture the request before it goes to the print service, and insert the TileInfo.

Here's is roughly the way it works in my application widget:

_modifyRequestForWebTiled: function (ioArgs) {
   if (ioArgs && ioArgs.content && ioArgs.content.Web_Map_as_JSON) {
      var webmapJson = JSON.parse(ioArgs.content.Web_Map_as_JSON);
      if (webmapJson.operationalLayers.length) {
         arrayUtils.forEach(webmapJson.operationalLayers, function (lyr) {
             if (lyr.type == 'WebTiledLayer') {
               lyr.tileInfo = this.map.getLayer(lyr.id).tileInfo;
            }
         });

   }
}
esriRequest.setRequestPreCallback(lang.hitch(this, '_modifyRequestForWebTiled'));

I expected this to be fixed in the 3.11 API, but it looks like you'll still need this fix at 3.11. Not, you can still run into a lot of other issues while printing WebTiledLayers. One of those is opacity.