将OpenSeaMap集成到Android应用程序中

时间:2014-05-20 00:08:18

标签: android openstreetmap openseamap

我使用osmdroid成功地将OpenStreetMap集成到我的Android应用程序中,并决定尝试使用OpenSeaMap作为地图图块提供程序(该应用程序以海洋为焦点)。

按照here概述的说明将自定义磁贴提供程序合并到 osmdroid 中,我添加了以下代码:

    // Create a custom tile source
    final IRegisterReceiver registerReceiver = new SimpleRegisterReceiver(context);
    final ITileSource tileSource = new XYTileSource("Mapnik", 
                                                    ResourceProxy.string.mapnik, 
                                                    1, 
                                                    18, 
                                                    256, 
                                                    ".png", 
                                                    new String[] {"http://tiles.openseamap.org/seamark/"});

    // Create a file cache modular provider
    final TileWriter tileWriter = new TileWriter();
    final MapTileFilesystemProvider fileSystemProvider = new MapTileFilesystemProvider(registerReceiver, tileSource);
    // Create a download modular tile provider
    final NetworkAvailabliltyCheck networkAvailabliltyCheck = new NetworkAvailabliltyCheck(context);
    final MapTileDownloader downloaderProvider = new MapTileDownloader(tileSource, tileWriter, networkAvailabliltyCheck);

    // Create a custom tile provider array with the custom tile source and the custom tile providers
    final MapTileProviderArray tileProviderArray = new MapTileProviderArray(tileSource, registerReceiver, new MapTileModuleProviderBase[] { fileSystemProvider, downloaderProvider });

    // Create the mapview with the custom tile provider array
    this.mapView = new MapView(context, 256, new DefaultResourceProxyImpl(context), tileProviderArray);

...值得注意的是,我编写的代码不包括GEMF文件存档。说实话,我不明白这个含义。希望有人也可以对这个话题有所了解。这种影响有点说明了。在提供OpenSeaMap信息的地方,呈现黑色图块。在进一步放大时,瓷砖似乎是混乱的。

Black tiles where OpenSeaMap is adding content

当我继续进行实验时,我注意到有时,OpenSeaMap数据被正确呈现;

Kind of working OpenSeaMap

有没有人遇到与OpenSeaMap类似的问题?

1 个答案:

答案 0 :(得分:0)

所以,这是一个双重的事情,这是我现在正在运行的代码;

// Create a custom tile source
final ITileSource seamarks = new XYTileSource("seamarks", 
                                              null, 
                                              0, 
                                              19, 
                                              256, 
                                              ".png", 
                                              new String[] {"http://tiles.openseamap.org/seamark/"});
final MapTileProviderBasic tileProvider = new MapTileProviderBasic(context, seamarks);
final TilesOverlay seamarksOverlay = new TilesOverlay(tileProvider, context);
seamarksOverlay.setLoadingBackgroundColor(Color.TRANSPARENT);
seamarksOverlay.setUseSafeCanvas(true);

// Create the mapview with the custom tile provider array
this.mapView = new MapView(context, 256);
this.mapView.setMultiTouchControls(true);
this.mapView.setUseSafeCanvas(true);
this.mapView.getOverlays().add(seamarksOverlay);

... setLoadingBackgroundColor状态有助于避免黑色瓷砖,并且有一点耐心允许覆盖从服务器上拉下来,它有点慢!