Question

我现在手头有一个移动地图包（.mmpk），我想在我要制作的应用程序中执行路由。但是，我不知道如何在mmpk内部加载运输网络。有人能给我一些建议吗？谢谢。

P.S。该应用程序将使用Android Studio进行，我使用Java来完成它。

P.S.S。路由网络数据位于地理数据库

中

以下是代码，请看一下：

import android.Manifest;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;

import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.MobileMapPackage;
import com.esri.arcgisruntime.mapping.view.MapView;

import java.io.File;

public class ActivityElderly extends AppCompatActivity {
private static final String TAG = "MMPK";
private static final String FILE_EXTENSION = ".mmpk";
private static File extStorDir;
private static String extSDCardDirName;
private static String filename;
private static String mmpkFilePath;
private MapView mMapView;
private MobileMapPackage mapPackage;

String[] reqPermission = new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE};
private int requestCode = 2;

private static String createMobileMapPackageFilePath(){
    return extStorDir.getAbsolutePath() + File.separator + extSDCardDirName + File.separator + filename + FILE_EXTENSION;
}
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Get the view from new_activity.xml
    setContentView(R.layout.map_elderly);
    // get sdcard resource name
    extStorDir = Environment.getExternalStorageDirectory();
    // get the directory
    extSDCardDirName = this.getResources().getString(R.string.config_data_sdcard_offline_dir);
    // get mobile map package filename
    filename = this.getResources().getString(R.string.config_mmpk_name);
    // create the full path to the mobile map package file
    mmpkFilePath = createMobileMapPackageFilePath();

    // retrieve the MapView from layout
    mMapView = (MapView) findViewById(R.id.mapView);

    if(ContextCompat.checkSelfPermission(ActivityElderly.this, reqPermission[0]) == PackageManager.PERMISSION_GRANTED){
        loadMobileMapPackage(mmpkFilePath);
    }else{
        // request permission
        ActivityCompat.requestPermissions(ActivityElderly.this, reqPermission, requestCode);
    }
}

    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults){
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
            loadMobileMapPackage(mmpkFilePath);
        }else{
            // report to user that permission was denied
            Toast.makeText(ActivityElderly.this, getResources().getString(R.string.location_permission_denied),
                    Toast.LENGTH_SHORT).show();
        }
    }
private void loadMobileMapPackage(String mmpkFile){
    //[DocRef: Name=Open Mobile Map Package-android, Category=Work with maps, Topic=Create an offline map]
    // create the mobile map package
    mapPackage = new MobileMapPackage(mmpkFile);
    // load the mobile map package asynchronously
    mapPackage.loadAsync();

    // add done listener which will invoke when mobile map package has loaded
    mapPackage.addDoneLoadingListener(new Runnable() {
        @Override
        public void run() {
            // check load status and that the mobile map package has maps
            if(mapPackage.getLoadStatus() == LoadStatus.LOADED && mapPackage.getMaps().size() > 0){
                // add the map from the mobile map package to the MapView
                mMapView.setMap(mapPackage.getMaps().get(0));
            }else{
                // Log an issue if the mobile map package fails to load
                Log.e(TAG, mapPackage.getLoadError().getMessage());
            }
        }
    });
    //[DocRef: END]
}

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

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

Answer 1

如果您正在寻找一种方法来准备包裹，那么请租用一下那个http://pro.arcgis.com/en/pro-app/tool-reference/data-management/create-mobile-map-package.htm#GUID-9116AC0F-08E1-4B55-965D-123F01262A53

的工具

如果您正在寻找如何创建RouteTask，请查看文档https://developers.arcgis.com/android/latest/guide/find-a-route.htm

如果您正在寻找从已准备好的离线软件包加载网络数据的方法，那么请查看github上的示例https://github.com/Esri/arcgis-runtime-samples-android/tree/master/java/mobile-map-search-and-route

简而言之，您只需获取包含网络数据集的任何地图，并在RouteTask中使用它。

ArcGISMap map = mMobileMapPackage.getMaps().get(0);
//if map contains transport network setup route task
if (map.getTransportationNetworks().size() > 0) {
    mRouteTask = new RouteTask(this, map.getTransportationNetworks().get(0));
}

如何在MMPK中加载路由网络数据？

1 个答案: