[FREE] DjMaps extension for OSM

Extensions
1

I made this extension to make things easier to use OSM Maps features.

  • add custom Marker (customize icon and size)
  • add Circle ( with UserExitsCircle feature)
  • add Polygon
  • add Track
  • add Maptiles (load .mbtiles for Offline Map use)
  • add Image (load and fit an Image, for example a Photo of a historical Map
    as an Overlay)
  • All features are clickable and this way easy to remove.
  • note: Currently, you still need to add the AppInventor OSM Map
    component and set it to invisible. Otherwise, the extension won't work.

Developed by Django 2025 using Fast.

:package: Package: com.django.djmaps
:floppy_disk: Size: 156,14 KB
:gear: Version: 1.11
:iphone: Minimum API Level: 26
:date: Updated On: 2025-03-18T23:00:00Z
:computer: Built & documented using: FAST-CLI v2.6.0

Demo Aia:

Screenshot_20250321-183954_MIT_AI2_Companion
Screenshot_20250321-183954_MIT_AI2_Companion720×1280 312 KB

Screenshot_20250321-184120_MIT_AI2_Companion
Screenshot_20250321-184120_MIT_AI2_Companion720×1280 108 KB

Screenshot_20250321-184250_MIT_AI2_Companion
Screenshot_20250321-184250_MIT_AI2_Companion720×1280 121 KB

Screenshot_20250321-184403_MIT_AI2_Companion
Screenshot_20250321-184403_MIT_AI2_Companion720×1280 125 KB

Events:

DjMaps has total 16 events.

MapReady_Event

Triggered when the map is ready.

MapTileClicked_Event

Triggered when a MapTile is clicked.

Parameter Type
maptileId number
title text

MarkerCreated_Event
Triggered when a marker is created.

Parameter Type
markerId number
latitude number
longitude number

MarkerLongClicked_Event

Triggered when a marker is long clicked.

Parameter Type
markerId number
title text
subtitle text
latitude number
longitude number
iconFileName text

MarkerClicked_Event

Triggered when a marker is clicked.

Parameter Type
markerId number
title text
subtitle text
latitude number
longitude number
iconFileName text

MarkerDragged_Event

Triggered when a marker is dragged.

Parameter Type
markerId number
latitude number
longitude number

PolygonClicked_Event

Triggered when a polygon is clicked.

Parameter Type
polygonId number
name text
latitude number
longitude number

PolygonLongClicked_Event

Triggered when a polygon is long clicked.

Parameter Type
polygonId number
name text
latitude number
longitude number

UserExitsCircle_Event

Triggered when user exits the tracked circle

Parameter Type
circleId number
latitude number
longitude number
name text
radius number

CircleClicked_Event

Triggered when a circle is clicked.

Parameter Type
circleId number
latitude number
longitude number
name text
radius number

CircleLongClicked_Event

Triggered when a circle is long clicked.

Parameter Type
circleId number
latitude number
longitude number
name text
radius number

TrackClicked_Event

Triggered when a track (polyline) is clicked.

Parameter Type
trackId number
name text
length number

TrackLongClicked_Event

Triggered when a track (polyline) is long clicked.

Parameter Type
trackId number
name text
length number

ImageClicked_Event

Event triggered when the image overlay is clicked.

Parameter Type
imageId number
title text
latitude number
longitude number
scale number
rotation number
filePath text

MapZoomed_Event

Triggered when the map zoom level changes

Parameter Type
oldZoomLevel number
newZoomLevel number

MapLongPressed_Event

Triggered when the map is long-pressed.

Parameter Type
latitude number
longitude number

Methods:

DjMaps has total 20 methods.

InitializeMap_Method

Initialize or reinitialize the map in the specified arrangement

Parameter Type
arrangement component

RequestPermissions_Method

Request necessary permissions.

LoadImageOverlay_Method

Load an image overlay at a specific latitude and longitude.

Parameter Type
imagePath text
latitude number
longitude number
title text

RemoveImage_Method

Remove an image overlay from the map by its unique ID.

Parameter Type
imageId number

SetMapType_Method

Set the map type for the map view.

Parameter Type
mapType number

ResetMapRotation_Method

Reset map rotation to north-up (0 degrees).

RemoveAllMapOverlays_Method

Remove all map overlays.

LoadMapTile_Method

Load a .mbtiles file and display its tiles on the map with a given title.

Parameter Type
title text
filePath text

RemoveMaptile_Method

Remove a specific MBTiles overlay from the map by its MaptileId.

Parameter Type
maptileId number

RemoveAllMaptiles_Method

Remove all MBTiles overlays from the map.

AddMarker_Method

Add a marker to the map with a unique index.

Parameter Type
latitude number
longitude number
title text
subtitle text
iconFileName text
color text
draggable boolean
iconSize number

RemoveMarker_Method

Remove a marker from the map by its unique index.

Parameter Type
markerId number

AddPolygon_Method

Add a polygon with nested coordinate lists.

Parameter Type
coordinates list
name text
fillColor number
opacity number
strokeColor number
strokeWidth number

RemovePolygon_Method

Remove a polygon from the map by its unique ID.

Parameter Type
polygonId number

AddCircle_Method

Add a circle to the map with configurable properties.

Parameter Type
latitude number
longitude number
name text
radius number
strokeColor number
fillColor number
opacity number

EnableCircleExitCheck_Method

Enable circle exit detection for a specific circle

Parameter Type
latitude number
longitude number
enable boolean
circleId number

RemoveCircle_Method

Remove a circle from the map by its unique ID.

Parameter Type
circleId number

AddTrack_Method

Add a track (polyline) with nested coordinate lists.

Parameter Type
coordinates list
name text
color number
opacity number
width number

RemoveTrack_Method

Remove a track from the map by its unique ID.

Parameter Type
trackId number

SetCenter_Method

Set the map's zoom level and center location.

Parameter Type
latitude number
longitude number
zoomLevel number

Setters:

DjMaps has total 9 setter properties.

SetImageOpacity_Set_Property

Set the opacity of the loaded image overlay.

  • Input type: number

RotateImage_Set_Property

Rotate the image overlay.

  • Input type: number

ScaleImage_Set_Property

Scale the image overlay.

  • Input type: number

EnableImageEdit_Set_Property

Enable or disable image editing mode.

  • Input type: boolean

EnableCompass_Set_Property

Enable or disable the compass overlay.

  • Input type: boolean

EnableScale_Set_Property

Enable or disable the scale bar overlay

  • Input type: boolean

EnableRotation_Set_Property

Enable or disable map rotation.

  • Input type: boolean

ShowUserPosition_Set_Property

Enable or disable showing the user's position on the map.

  • Input type: boolean

ZoomMap_Set_Property

Set the map's zoom level

  • Input type: number

Getters:

DjMaps has total 8 getter properties.

GetZoomLevel_Get_Property

Get current zoom level

  • Return type: number

GetImageScale_Get_Property

Get the current scale of the image overlay.

  • Return type: number

GetAllMaptileIDs_Get_Property

Get the list of all loaded Maptile IDs.

  • Return type: list

GetAllMarkerIDs_Get_Property

Get a list of all marker IDs currently on the map.

  • Return type: list

GetAllPolygonIDs_Get_Property

Get a list of all polygon IDs currently on the map.

  • Return type: list

GetAllCircleIDs_Get_Property

Get a list of all circle IDs currently on the map.

  • Return type: list

GetAllImageIDs_Get_Property

Get a list of all image overlay IDs currently on the map.

  • Return type: list

GetAllTrackIDs_Get_Property

Get a list of all track IDs currently on the map.

  • Return type: list

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credits go to @Jewel for his filepicker extension I used in this demo aia

com.django.DjMaps.aix (155.7 KB)
MapExtTest4.aia (362.0 KB)
Since I have been working on this extension for several weeks, I would appreciate a small donation!

3 Likes
2

Great to see that you used aixtools for docs! Am I right?

1 Like