com.mousebird.maply

Interface QuadPagingLayer.PagingInterface

All Known Implementing Classes:

LAZQuadReader, MapboxVectorTileSource, OSMVectorTilePager, TestQuadPager

Enclosing class:

QuadPagingLayer

public static interface QuadPagingLayer.PagingInterface

This is the interface paging delegates must fill in. You'll get called back on the startFetchForTile on the layerThread. Ideally, you should spawn other threads to do your fetching and processing.

Method Summary

Modifier and Type	Method and Description
int	maxZoom() The maximum zoom level you'll be called about to create a tile for.
int	minZoom() The minimum zoom level you'll be called about to create a tile for.
void	startFetchForTile(QuadPagingLayer layer, MaplyTileID tileID) The paging layer calls your class hear to start fetching a tile.
void	tileDidUnload(MaplyTileID tileID) Called when the system unloads a tile.

Method Detail

minZoom

int minZoom()

The minimum zoom level you'll be called about to create a tile for.

maxZoom

int maxZoom()

The maximum zoom level you'll be called about to create a tile for.

startFetchForTile

void startFetchForTile(QuadPagingLayer layer,
                       MaplyTileID tileID)

The paging layer calls your class hear to start fetching a tile. We're assuming you're making network calls and it might take a while, so DO NOT BLOCK here. Instead, kick off your network calls and deal with the data when it comes back.

Calls into the QuadPagingLayer are thread safe, so do your real work on your own thread, or use the LayerThread if you need to.

When your data comes in you should create the visual objects you want in the maply controller and then call addData() one or more times with your new ComponentObject's. Those visual objects should start out with enable = false.

Once you've loaded data, call tileDidLoad() or if you've failed call tileFailedToLoad(). The paging layer will only have a few loads outstanding at once, so you must tell it to continue loading, even on a failure.

Parameters:

layer - The quad paging layer asking you to start fetching.

tileID - The tile to start fetching

tileDidUnload

void tileDidUnload(MaplyTileID tileID)

Called when the system unloads a tile. You need this if you're tracking data separate from ComponentObjects, which the QuadLayer will take care of.