Warning database has been locked for 0:00:10.000000. #752

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1. maRci002 commented on Sep 23, 2020

   

   maRci002

   on Sep 23, 2020

   Contributor

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   CachedNetworkTileProvider uses Flutter's CachedNetworkImageProvider and if they use sqlite as default cache manager then it could happen because images' bytes aren't batched in one transaction since they don't know about each other since images returns from internet at different time.

   Try to add some layers a little later, like this:

     final layers = <LayerOptions>[];
   
     @override
     void initState() {
       super.initState();
   
       layers.addAll(<LayerOptions>[
         TileLayerOptions(),
         TileLayerOptions(),
         TileLayerOptions(),
         ...
       ]);
   
       Timer(const Duration(milliseconds: 50), () {
         layers.addAll(<LayerOptions>[
           TileLayerOptions(),
           TileLayerOptions(),
           TileLayerOptions(),
           ...
         ]);
         setState(() {});
       });
   
       Timer(const Duration(milliseconds: 100), () {
         layers.addAll(<LayerOptions>[
           TileLayerOptions(),
           TileLayerOptions(),
           TileLayerOptions(),
           ...
         ]);
         setState(() {});
       });
     }
   
     @override
     Widget build(BuildContext context) {
       ...
       child: FlutterMap(
         layers: layers,
       ),
       ...
     }

   However if you move around map this can still happen and above solution may not solve the above warning.
2. Swepilot commented on Sep 24, 2020

   

   Swepilot

   on Sep 24, 2020

   Author

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   Thanks again, very supportive as always. Yeah, it happens when moving the map around. I'll see what I can do to improve this.
3. johnpryan

   closed this as completedin #841on Mar 16, 2021