Basemaps and layers are available on the iOS App right from the map view. To get to the map view:
Select the app that you are going to work with from the apps list
If you do not see the map view, select the 'Map View' option on the lower left corner of the screen
Accessing the Basemaps and Layers
From the map view, you will be able to select the basemaps and layers button.
Basemaps
Once you click on the basemaps and layers button, the available options will be displayed at the bottom of the screen. From here you can select between the different basemaps available, just by clicking on the desired one. Basemaps may also be downloaded for offline use.
Custom Layers
Right below the Basemaps you will find your custom layers. These could be added to Fulcrum through the web app or added by authenticating with ArcGIS. From this section, you can enable, disable, or change the ordering of your layers. Multiple layers can be arranged on top of one another. You even have the option to download some layers for offline access.
To arrange the order of the layers tap the ‘edit’ button and then drag the layers into the desired position.
There is a search option as well to help you get to the one you need faster.
Right below the layers, you will also have the option to 'Connect to ArcGIS' to access your Feature Service Layers if you haven't already.
To learn more on this topic, please check out the following article:
Downloading Layers for Offline Use
Both MBTiles Layers and ArcGIS Feature Service Layers can be used offline.
To download an MBTiles layer, click on the 'Download' button just below the layer title and description.
To download a Feature Service Layer, select the 'Make Available Offline' button under the layer title and description.
We recommend that you download your layers in advance when your device is connected to a WiFi network or with a strong cellular connection.
After the layer has downloaded, you will see a green message that says that your layer is "Available offline".
Notes
The included Basemaps options are Streets, Satellite, Hybrid (a combination of satellite and streets), and Terrain.
The mobile apps have support for three of the custom map layer types available. MBTiles and Feature Service Layers can be used for offline and online use, Tile XYZ sources can be used for online layers.
Be sure to download your offline maps before heading out to collect data in offline environments.
MBTile layers can either be uploaded directly to the device or added to Fulcrum through the web app.