Blinking symbol update

[Sprechen]

I'm using the Maplibre android-sdk:9.6.0 with org.maplibre.gl:android-plugin-annotation-v9:1.0.0.

I have a symbol manager with only a symbol (that is an image) with potentially fast updates of location and icon rotation.

Sometimes, the symbol "flick" or "blink" when updated.
I found a similar issue on the mapbox repository, where the suggested solution was to allow the overlap of icon and text as follow:

symbolManager.setIconAllowOverlap(true);
symbolManager.setTextAllowOverlap(true);

this suggestion only mitigate the effect, but sometimes the "blink" is still happening.
Do you have any suggestion to completely resolve this issue?

I set also up other properties, as follows:

        symbolManager = SymbolManager(mapView, map, style)
        symbolManager.iconRotationAlignment = Property.ICON_ROTATION_ALIGNMENT_MAP
        symbolManager.iconAllowOverlap = true
        symbolManager.textIgnorePlacement = true
        symbolManager.textAllowOverlap = true
        symbolManager.iconIgnorePlacement = true

Thanks for any suggestion!

[ovivoda]

@Sprechen Please update MapLibre android-sdk to v10.0.2 and see if this is still an issue?

[Sprechen]

@ovivoda I've updated to the latest version of the sdk, v10.0.2. No changes are needed in my code, and I'm still using the 'org.maplibre.gl:android-plugin-annotation-v9:1.0.0 plugin.
Unfortunately, the "blink" is still present.
It seems that if only the rotation is updated, the blink is not present. Otherwise, when both rotation and position are updated, the blink is visible.

[Sprechen]

@ovivoda any update on this issue?

[ovivoda]

@Sprechen is it possible for you to provide a sample application were this can be easily reproducible?

[jDilshodbek]

Hello @ovivoda I have also witnessed this issue I am providing you screen video and code.

Symbol.flicker.mp4

Here I am updating symbol latlng positions continuosly with raw location updates from FusedLocationProvider.

`val valueAnimator = ValueAnimator.ofFloat(0F, 1F)
valueAnimator.duration = 3000
valueAnimator.interpolator = LinearInterpolator()
valueAnimator.addUpdateListener { valueAnimator1 ->
val v = valueAnimator1.animatedFraction
val lat = v * currentLatLng.latitude + (1 - v) * lastLocation!!.latitude
val lng = v * currentLatLng.longitude + (1 - v) * lastLocation!!.longitude
val newPos = LatLng(lat, lng)
markerCurrentLocation!!.latLng = newPos
val bear = bearingBetweenLocations(
LatLng(
lastLocation!!.latitude,
lastLocation!!.longitude,
),
currentLatLng,
)
CommonPrefModel.BEAR = bear

                if (bear > 0 && abs(bear.toInt()) != abs(lastBear.toInt() - 180)) {
                    markerCurrentLocation!!.iconRotate = bear
                    lastBear = bear
                }

                symbolManager?.update(markerCurrentLocation)
            }`

[ravenfeld]

I don't know if it's the same problem, but on my side, some of them disappear when I move the card, especially if I rotate it.

Wouldn't it be better to make the issue in the plugin repo?

[louwers]

@ravenfeld Thanks. Transferred.