要加载超过4GB的map.zip文件,你需要使用osmdroid的MapTileFileArchiveProvider进行加载。这个提供者可以处理超过4GB的zip文件。下面是一个示例代码,演示了如何加载超过4GB的map.zip文件:

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Environment;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import org.osmdroid.config.Configuration;
import org.osmdroid.tileprovider.MapTileProviderBasic;
import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapView;

public class MainActivity extends AppCompatActivity {

    private MapView mapView;

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

        //请求存储权限
        if (ContextCompat.checkSelfPermission(this,
                Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                    1);
        } else {
            initializeMap();
        }
    }

    private void initializeMap() {
        //设置osmdroid的缓存目录为外部存储的根目录
        Configuration.getInstance().setOsmdroidBasePath(
                Environment.getExternalStorageDirectory().getAbsolutePath());
        //设置osmdroid的缓存路径
        Configuration.getInstance().setOsmdroidTileCache(
                Environment.getExternalStorageDirectory().getAbsolutePath() + "/osmdroid");

        mapView = findViewById(R.id.mapView);
        mapView.setTileSource(TileSourceFactory.MAPNIK);
        mapView.setBuiltInZoomControls(true);
        mapView.setMultiTouchControls(true);
        mapView.getController().setZoom(10);
        mapView.getController().setCenter(new GeoPoint(40.7128, -74.0060));

        //创建MapTileProviderBasic实例
        MapTileProviderBasic provider = new MapTileProviderBasic(this,
                TileSourceFactory.DEFAULT_TILE_SOURCE);
        //设置MapTileFileArchiveProvider为提供者
        provider.setTileLoader(new MapTileFileArchiveProvider(
                new SimpleRegisterReceiver(this),
                TileSourceFactory.DEFAULT_TILE_SOURCE,
                new String[]{"path/to/map.zip"})); //替换为你的map.zip文件路径

        //将提供者设置给MapView
        mapView.setTileProvider(provider);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        if (requestCode == 1) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                initializeMap();
            }
        }
    }
}

请确保将"path/to/map.zip"替换为你实际的map.zip文件路径。

此外,你还需要在AndroidManifest.xml文件中添加以下权限:

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

这样就可以加载超过4GB的map.zip文件了

osmdroid 超过4GB以上的mapzip加载不出来给出具体执行方案和可运行的代码

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

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