Feat: add support for adding metadata to marker

Is your feature request related to a problem? Please describe. It should be possible to recognize a specific marker after tapping it by using metadata.

Does this feature exist in the Google Maps SDK for android and iOS? Please link the documentation for this feature. Similar behavior exists in the SDK using marker.setTag and marker.getTag. Those are actually the methods I use in the PR.

Describe the solution you’d like I already made a PR for Android. I haven’t had time to work on iOS, but it should be very similar.

The proposed API looks like this:

addMarker({
  metadata: { some: 'example', any: 'thing' }
})

Metadata should be an object. What someone puts into that object is completely up to them.

In the future we could even utilize this the remove specific markers.

// if we add metadata like this
addMarker({
  metadata: { id: 123 }
})

// we could maybe support an API-call like this:
removeMarkerByMetadataProperty({
  id: 123
})

But that is for another time.

[tafelnl]

Sidenote: it might be a good idea to merge future PR’s by squashing them. It is a common practice used in many open source projects with many PR’s. For example Capacitor commit history: https://github.com/ionic-team/capacitor/commits/main

[tafelnl]

Yes, I was thinking exactly the same. I already made a little proof of concept for android. Will try to share it tomorrow