要加载超过2GB以上的map.zip文件,您可以使用以下代码:

import org.osmdroid.api.IMapController;
import org.osmdroid.config.Configuration;
import org.osmdroid.tileprovider.tilesource.ITileSource;
import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
import org.osmdroid.tileprovider.tilesource.XYTileSource;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapView;

public class MainActivity extends AppCompatActivity {

    private MapView mapView;
    private IMapController mapController;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 设置osmdroid的磁盘缓存路径
        Configuration.getInstance().setOsmdroidTileCache(getCacheDir());

        mapView = (MapView) findViewById(R.id.map_view);
        mapView.setTileSource(TileSourceFactory.DEFAULT_TILE_SOURCE);

        // 设置地图中心点和缩放级别
        mapController = mapView.getController();
        mapController.setZoom(10);
        GeoPoint startPoint = new GeoPoint(40.7128, -74.0060);
        mapController.setCenter(startPoint);

        // 加载map.zip文件
        ITileSource tileSource = new XYTileSource("Map", ResourceProxy.string.offline_mode, 10, 18, 256, ".png", new String[]{});
        mapView.setTileSource(tileSource);
        mapView.setUseDataConnection(false);

        File mapFile = new File(Environment.getExternalStorageDirectory(), "path/to/map.zip");
        if (mapFile.exists()) {
            mapView.setTileProvider(new MapTileFileArchiveProvider(new SimpleRegisterReceiver(this), tileSource, new File[]{mapFile}));
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        mapView.onResume();
    }

    @Override
    protected void onPause() {
        super.onPause();
        mapView.onPause();
    }
}

请注意,您需要将"activity_main.xml"中的MapView添加到您的布局文件中。

同时,确保您已经在AndroidManifest.xml文件中添加了以下权限:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

这些权限将允许您在设备上读取和写入存储空间,以便加载map.zip文件。

另外,请确保您已经将map.zip文件放置在正确的路径下,并将"path/to/map.zip"替换为实际的文件路径。


原文地址: https://www.cveoy.top/t/topic/pEQr 著作权归作者所有。请勿转载和采集!

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