MBTiles离线地图设置

利用MBTiles格式存储离线瓦片，下面为加载方式：

[java] view plain copy print?

/**
 * 离线地图
 * 来自离线文件 mbtiles_db.mbtiles
 *
 *
 */
public class OfflineMBTilesDemo extends Activity {
    private MapView mapView;
    public  RelativeLayout rl;
    public  MapTileProviderArray mProvider;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setOfflineForMBTiles();// 离线数据

        ScaleBarOverlay scaleBar = new ScaleBarOverlay(getApplicationContext());//比例尺
        mapView.getOverlays().add(scaleBar);
    }
    public void setOfflineForMBTiles() {
        {//离线数据设置
        DefaultResourceProxyImpl mResourceProxy = new DefaultResourceProxyImpl(
                this.getApplicationContext());
        SimpleRegisterReceiver simpleReceiver = new SimpleRegisterReceiver(
                this.getApplicationContext());

        File f = new File("SD/map/MBTiles" , "mbtiles_db.mbtiles");
        IArchiveFile[] files = { MBTilesFileArchive.getDatabaseFileArchive(f) };
        OfflineTileSource offlineSource = new OfflineTileSource("ehl_mbtiles_db", ResourceProxy.string.offline_mode, 7, 15, 256, ".png");

        MapTileModuleProviderBase moduleProvider = new MapTileFileArchiveProvider( simpleReceiver, offlineSource, files);
        MapTileProviderArray mProvider = new MapTileProviderArray( offlineSource, null, new MapTileModuleProviderBase[] { moduleProvider });
        this.mapView = new MapView(this, 256, mResourceProxy, mProvider);
        }

        {//地图初始化设置
        this.mapView.setBuiltInZoomControls(true);// 最下方出现放大缩小按钮
        this.mapView.setMultiTouchControls(true);// 触控放大缩小
        this.mapView.setUseDataConnection(false);
        mapView.getController().setCenter(
                new GeoPoint(29.35, 106.33));// 设置中心点
        mapView.getController().setZoom(9);
        }

        {//布局
        final RelativeLayout rl = new RelativeLayout(this);
        rl.addView(this.mapView, new RelativeLayout.LayoutParams(
                LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
                this.setContentView(rl);
        }
    }
}