Layer already attached to different renderer

[grantd77]

Hello,

I am after some help please.
I have upgraded an old android app from the Nutiteq SDK to the latest CARTO SDK.

I am close to finishing the task, however there are some crashes caused by the way the app functions with the map view. I am a contract worker, trying to help out on the project, the original developers are not involved, so its been quite a long process and I am also originally a iOS developer but have muddled my way through gradually.

When a new screen takes over, removing the map view from view, and then it is returned to view, the app crashes and this error is placed in the log:

abort_message: assertion "terminating with uncaught exception of type carto::InvalidArgumentException: Layer already attached to a different renderer" failed.

There is no stack trace unfortunately.
This app does function on Android 6.0-9.0, and there is no difference in OS that makes this error occur, it happens regardless.

I suspect the the main activity is doing something funky in onPause but I'm not sure.

Does anyone have any ideas on how I may fix this?
Thank you :)

[grantd77]

btw I am also trying these two lines to help stop it but it has no effect and the crash still occurs:

mapView.getMapRenderer().setMapRendererListener(null); mapView.getMapRenderer().delete();

[grantd77]

I have the answer, the solution is to call the following line about the first one I have above:

mapView.getLayers().clear();

The last line may not actually be necessary also.

[mtehver]

@grantd77 Sorry for the late reply, I am not actively monitoring this repository. Without seeing the source code of your app, I am guessing that you have created a layer and added it to a MapView instance. Then you create another MapView instance and try to add the same layer to the new MapView instance also. This is not allowed, you need to create a new layer for the new MapView instance.