Evaluation of all Examples and issues encountered

[pamtbaau]

Tried to add an Issue, but it doesn't really fit the template. So posting it here...

I've run though all Examples and noted all Exceptions and unexpected behaviours I've encountered.
Tests are run on Android emulator running app in debug mode.

Examples

• General
  • Events
    • Does not show map on start. Needs tap.
  • Two Maps
    • Both do not show Map on start. Needs tap.
  • User Location
    • Both button "Enable location" and "Track location" throw Exception when Permission has not been granted yet. Maybe just a matter of disabling buttons when no Permission has been granted yet.
    • Location set in Android emulator not picked up
  • User Interface
    • Location set in Android emulator not picked up
  • Offline
    • Not tested
  • Permissions
    • No error, but might be confusing that button requestLocatioPermission doesn't seem to do anything when permissions have already been granted.
• Layers
  • Mixed Layers

    • Circles not show. Needs tap.

    • Exception when clicking button Change color:

      "Exception has occurred.
      PlatformException (PlatformException(channel-error, Unable to establish connection on channel: "dev.flutter.pigeon.maplibre.MapLibreHostApi.addCircleLayer.0"., null, null))"

      See MapLibreHostApi line 503

    • After creating a few circles, a new circle will not be displayed until a next circle is created.

  • Circles
    • Not showing circles. Needs tap.
    • After creating few circles using Tap, new circle doesn't show up. On next tap, previous and new circle show up.
  • Markers

    • Exception thrown when opening page.

      "Exception has occurred.
      PlatformException (PlatformException(channel-error, Unable to establish connection on channel: "dev.flutter.pigeon.maplibre.MapLibreHostApi.addSymbolLayer.3"., null, null))"

  • Polygons
    • Polygons not shown at startup. Needs tap.
  • Polylines
    • After adding a few line segments, a new segment will not be shown before a new segment is added.
• Style Layers
  • Hillshade
    • Does not show coloured regions until tap.
  • Raster

    • Exception thrown:

      *"Exception has occurred.
      StateError (Bad state: Element type of JArray must be nullable when all elements with null

      Try using .nullableType instead)*"

      See StyleControllerAndroid line 86

Notes

• Required taps to show more elements is not consistent. Sometimes it is required, sometimes it is not.
• The creation of new elements in eg. Circles and Polylines is not consistent. Sometimes it works sometimes it doesn't.

[josxha]

Thanks for the feedback @pamtbaau. That's real strange behavior. I haven't tested on an Android emulator yet. What android version are you using?

[pamtbaau]

Android v15

[josxha]

Thanks, I was able to reproduce some of the behavior but not consistently. It could be that it only occurs if the loading takes longer like on an emulator. I'll look into this!

[josxha]

• I created an issue to track the failed map initialization on the android emulator: [BUG] Issues in android emulator #227
• chore: prepare v0.2.1 release #226 improves the UX of the example app by showing SnackBars for location and permission calls.
• The Raster Style Layer example gets fixed in fix: add RasterSource programatically throws exception #228