Below is the code I'm using that should 1) open a portal to ArcGIS Online, 2) prepare an export task with the Url of the basemap that I'd like to download, and 3) export the basemap.
I use the AuthenticationManager QML item to take in my credentials to my ArcGIS Developer account which it accepts, my only error is the one above and I'm not sure what the problem could be. Perhaps it is a network permissions issue?
Portal* portal = new Portal(QUrl("https://arcgis.com"), true, this);connect(portal, &Portal::doneLoading, this, [this](Error error){ if (!error.isEmpty())
qDebug() << error.message() << error.additionalMessage();
else
qDebug() << "Portal loaded!";
});
p_ExportTask_ = new ExportTileCacheTask(QUrl("https://tiledbasemaps.arcgis.com/arcgis/rest/services/Canvas/World_Light_Gray_Base/MapServer"), this);
connect(p_ExportTask_, &ExportTileCacheTask::doneLoading, this, [this](Error error){ if(!error.isEmpty()){ qDebug() << "ExportTask load error: " << error.message() << error.additionalMessage();
}
});
Geometry view = p_MapView_->visibleArea();
view = GeometryEngine::project(view, SpatialReference::webMercator());
connect(p_ExportTask_, &ExportTileCacheTask::defaultExportTileCacheParametersCompleted, this, [this, path](QUuid, ExportTileCacheParameters params){ p_ExportParams_ = params;
ExportTileCacheJob* exportJob = p_ExportTask_->exportTileCache(p_ExportParams_, path);
if(exportJob){ connect(exportJob, &ExportTileCacheJob::jobStatusChanged, this, [this, exportJob](){ QList<JobMessage> msgs;
switch(exportJob->jobStatus()){ case JobStatus::Failed:
std::cout << "Failed :(" << std::endl; msgs = exportJob->messages();
for(int i = 0; i < msgs.size(); i++){ JobMessage msg = msgs.at(i);
std::cout << msg.message().toStdString() << std::endl; //This is where the error occurs
}
break;
case JobStatus::Paused:
std::cout << "Export paused." << std::endl;
break;
case JobStatus::Started:
std::cout << "Export in progress..." << std::endl;
break;
case JobStatus::Succeeded:
std::cout << "Export succeeded!" << std::endl;
loadExportedMap(exportJob->result()); // This
break;
}
});
// Start the job
exportJob->start();
}else{ std::cout << "Export job is invalid, task aborted." << std::endl;
return;
}
});
p_ExportTask_->createDefaultExportTileCacheParameters(view, p_MapView_->mapScale(), p_ExportTask_->mapServiceInfo().maxScale());
void MyApp::loadExportedMap(TileCache *cache){ // Method to load the basemap and display it if(cache){ ArcGISTiledLayer* tiledLayer = new ArcGISTiledLayer(cache, this);
Basemap* basemap = new Basemap(tiledLayer, this);
p_Map_->setBasemap(basemap);
std::cout << "Tile package loaded successfully!" << std::endl;
}else{ std::cout << "The cache is invalid." << std::endl;
}
}
