Emoji markers are not displayed on the map

[link2xt]

One-letter markers are displayed directly (no need to click on the marker), but emojis don't.

Probably something is wrong with this length check and emojis length is not "1"? I tried replacing it with neq and 0, but then it stopped displaying any markers at all, even 1-letter english markers:

deltachat-android/src/org/thoughtcrime/securesms/map/MapDataManager.java

Line 459 in 370335b

Expression textField = switchCase(eq(length(get(MARKER_CHAR)), 1), get(MARKER_CHAR),

It's fixed in the core (

deltachat-android/src/org/thoughtcrime/securesms/map/MapDataManager.java

Line 459 in 370335b

Expression textField = switchCase(eq(length(get(MARKER_CHAR)), 1), get(MARKER_CHAR),

), and I have tested with python that markers are returned by the FFI just as well as letters.

[link2xt]

Maybe the problem is with the fonts, emojis are not rendered even in the black font below the marker:

Maybe related issue: nitaliano/react-native-mapbox-gl#1407

[link2xt]

I have tried to do something similar to https://docs.mapbox.com/android/maps/examples/text-field-formatting/ by adding:

import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textFont;
...
private static final String[] textFonts = new String[] {"Roboto Black", "Arial Unicode MS Regular", "emojiOne"};
...
                 textAllowOverlap(true),
+                textFont(textFonts),
                 textIgnorePlacement(true)

but nothing changed.

Not sure if emojiOne is available anywhere or should be uploaded to mapbox account.

[link2xt]

As a workaround it should be possible to extract corresponding image from our emoji picker and place them on the map as images.

Or maybe actually replace mapbox with OSM: https://github.com/osmdroid/osmdroid/wiki/How-to-use-the-osmdroid-library

https://support.delta.chat/t/switch-from-mapbox-to-osmdroid-on-android/1124

[link2xt]

Here is the commit which added single-character markers for reference: f5cc757

[cyBerta]

some links which might show the way to go:
mapbox/mapbox-gl-native#15937
mapbox/mapbox-gl-native-android#324

[link2xt]

On Desktop emojis are already displayed correctly with the latest core (master branch).

[link2xt]

PR with a fix: #1792