MapTileFilesystemProvider always reloads tiles

[Anfet]

MapTileFilesystemProvider always reloads tiles

[Anfet]

Tried the following:

mapView = new MapView(getActivity(), 256, new DefaultResourceProxyImpl(getActivity()), new CustomTileProvider(getActivity()));

public class CustomTileProvider extends MapTileProviderBasic {

    public CustomTileProvider(Context pContext) {
        this(new SimpleRegisterReceiver(pContext), new NetworkAvailabliltyCheck(pContext),
                TileSourceFactory.DEFAULT_TILE_SOURCE);
    }

    public CustomTileProvider(IRegisterReceiver pRegisterReceiver, INetworkAvailablityCheck aNetworkAvailablityCheck,
            ITileSource pTileSource) {
        super(pRegisterReceiver, aNetworkAvailablityCheck, pTileSource);

        mTileProviderList.set(0, new CustomMapTileFilesystemProvider(pRegisterReceiver, pTileSource));
    }

    @Override
    public void setTileSource(ITileSource aTileSource) {
        super.setTileSource(aTileSource);
    }
}

public class CustomMapTileFilesystemProvider extends MapTileFilesystemProvider {

    public CustomMapTileFilesystemProvider(IRegisterReceiver pRegisterReceiver, ITileSource pTileSource) {
        super(pRegisterReceiver, pTileSource, OpenStreetMapTileProviderConstants.ONE_YEAR * 10);
    }

}

I've replaced Filesystemprovider with my own, Also subclassed MapTileProviderBasic and fed it to mapView.

From my Offline tile source I see that tiles are loaded. Tiles are on filesystem, are correct bitmaps but mapView displays zero zoom, default map source.
Why is that?

[Anfet]

Okay. Issue is eluded.
Fix. Created constructors for every situation, subclassed MapTileProviderArray.

For notice: I would suggest to allow changing to mMaximumCachedFileAge of MapTileFilesystemProvider;
Or add getFileAge to ITileSource interface.

[neilboyd]

I think this is similar to issue 203 in the old repository. There was never enough interest to fix it, but suggestions and pull requests are always welcome.

[Anfet]

I'm very surprised that no one encountered a huge slowdown once 7 day period expires.
It is real pain.

Most of the problem also comes from gesture listener.
It catches all events from ViewPager, even on other pages. And by doing so, it forces MapTileFilesystemProvider to provide tiles. MapView is not even visible, but GC occurs and CPU/Mem is being used like hell.
My nexus4 was generating approx 1k getDrawable requests / second. And it really slows down the program.

[spyhunter99]

@Anfet think you an whip up an example to reproduce this?

[spyhunter99]

@Anfet we can now adjust or override the expiration time on donwloaded tiles. See #481 and the Configuration class