Runtime Error, Attempt To invoke Virtual Method

[Ruhul_Amin]

Getting Error

“Attempt to invoke virtual method ‘com.google.android.gms.maps.model.Marker
com.google.android.gms.maps.GoogleMap.addMarker(com.google.android.gms.maps.model.MarkerOptios)’ on a null object reference”
I have stored users Latitude And Longitude in TinyDB and When I call them it Gets The Right Value But Not Working
Here Are My Blocks

[dora_paz (Dora)]

In order to update marker you have to added first or else will throw an exception

[Ruhul_Amin]

how add a marker??

[dora_paz (Dora)]

[Ruhul_Amin]

I tried this but still not working

[Ruhul_Amin]

Finally I Solved With This Blocks

And @dora_paz This Also Helped Me.

Runtime Error, Attempt To invoke Virtual Method

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