Hi Thao
The current version of the app supports the zooming of levels beyond level 19, but a bug occurs when switching from basemaps with lower zoom levels. There is a workaround however:
- Update the survey’s .info file to restrict it to reference local TPKs only. This requires you adding and updating the displayInfo json:
{
"displayInfo": {
"map": {
"mapTypes": {
"append": false,
"includeLibrary": true
}
}
},
"serviceInfo": {
"itemId": "3ed8ad7f9edb4efc8d5613d6f78cacff",
"type": "Feature Service",
"url": "https://services5.arcgis.com/"
}
}
See the doc for more info on this step:
http://doc.arcgis.com/en/survey123/desktop/create-surveys/preparebasemaps.htm
- Copy a TPK with the required high zoom levels (this can be very small and does not need to display anything) to the map directory on the field device (\My Surveys\Maps).
- Copy the TPK that you want to view in the map to the same directory
- In the Survey123 field app, open the survey and click on the GeoPoint question
- Click on the hamburger button to view the Map Types list
- Select the other high zoom level TPK, then select the desired TPK.
- You will be able to access scales beyond 19
Here is a video of the steps: https://www.youtube.com/watch?v=MfoeGWAwv3s
Thanks
John