如何打开 KML 文件（来自资产文件夹）

Question

我在资产文件夹中有一个 KML 文件。我想打开它进入 google 地球或 google 地图。但其中 none 有效。这是我试过的：

对于Google地图

private GoogleMap map;
KmlLayer layer;
Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_locations);


    try {
        layer = new KmlLayer(map,getAssets().open("locations.kml"),context);
        layer.addLayerToMap();
    } catch (XmlPullParserException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

为了Google地球

    File KML = null;
    try {
        KML = new File(String.valueOf(getAssets().open("locations.kml")));
    } catch (IOException e) {
        e.printStackTrace();
    }
    Intent i = 
getPackageManager().getLaunchIntentForPackage("com.google.earth");
    i.setDataAndType(Uri.fromFile(KML), "xml");
    startActivity(i);

Answer 1

使用 Google 地图 Activity 创建一个新项目。

现在在 onMapReady() 方法中使用 retrieveFileFromResource()

private void retrieveFileFromResource() {
        try {
            KmlLayer kmlLayer = new KmlLayer(mMap, R.raw.kml, getApplicationContext());
            kmlLayer.addLayerToMap();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (XmlPullParserException e) {
            e.printStackTrace();
        }
    }

3.Full代码

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

private GoogleMap mMap;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);


}

@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;

    retrieveFileFromResource();
}

private void retrieveFileFromResource() {
    try {
        KmlLayer kmlLayer = new KmlLayer(mMap, R.raw.kml, getApplicationContext());
        kmlLayer.addLayerToMap();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (XmlPullParserException e) {
        e.printStackTrace();
    }
}
}

如何打开 KML 文件（来自资产文件夹）

How to Open KML file (from assets folder)

google-maps

android-intent

kml