It was asked in the App Inventor Forum, is there a capability in AppInventor to get co-ordinates for any location
clicked on Google Maps and pass that back to the application?
I used one of the map icons from Nicolas Mollet as marker , you can easily adjust that.
The tools extension offers the method PathToAssets which always returns the correct path to the assets.
Q1: I don't understand how it can take the selected position (with this app) to my 'blocks' as an argument of Latitude and Longitude??
A: In the example the selected coordinates are displayed in the title of the app. See the screenshot below how to get lat and long.
Btw. I recommend you to do the MIT tutorials first to learn the basics of App Inventor.
You can test with the apk file, which is available for download here:
Download apk file
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Thank you! Taifun