ArcGIS Android 100.9 SHP文件加载失败的问题

package com.esri.arcgisruntime.sample.featurelayershapefile;



import android.os.Bundle;



import androidx.appcompat.app.AppCompatActivity;



import com.esri.arcgisruntime.data.ShapefileFeatureTable;

import com.esri.arcgisruntime.layers.FeatureLayer;



import com.esri.arcgisruntime.mapping.ArcGISMap;

import com.esri.arcgisruntime.mapping.Basemap;

import com.esri.arcgisruntime.mapping.view.MapView;



import androidx.core.app.ActivityCompat;

import androidx.core.content.ContextCompat;



import android.Manifest;

import android.content.pm.PackageManager;



import com.esri.arcgisruntime.geometry.GeometryType;



public class MainActivity extends AppCompatActivity {



    private ArcGISMap mainArcGISMap;



    private FeatureLayer mainShapefileLayer;

    private MapView mMapView;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        mMapView = (MapView) findViewById(R.id.mapView);

        mainArcGISMap = new ArcGISMap(Basemap.createStreetsVector());

        mMapView.setMap(mainArcGISMap);



        String reqPermission = new String{Manifest.permission.WRITE_EXTERNAL_STORAGE};

        int requestCode = 2;

        if (ContextCompat.checkSelfPermission(this, reqPermission[0]) == PackageManager.PERMISSION_GRANTED) {

            showShapefile();

        } else {

            ActivityCompat.requestPermissions(this, reqPermission, requestCode);

        }

    }



    private void showShapefile() {



        // load the shapefile with a local path

        final ShapefileFeatureTable shapefileFeatureTable = new ShapefileFeatureTable(

                getExternalFilesDir(null) + getString(R.string.shapefile_path));



        shapefileFeatureTable.loadAsync();

        shapefileFeatureTable.addDoneLoadingListener(new Runnable() {

            @Override

            public void run() {

                GeometryType gt = shapefileFeatureTable.getGeometryType();

                String name = shapefileFeatureTable.getTableName();

                mainShapefileLayer = new FeatureLayer(shapefileFeatureTable);

                if (mainShapefileLayer.getFullExtent() != null) {

                    mMapView.setViewpointGeometryAsync(mainShapefileLayer.getFullExtent());

                } else {

                    mainShapefileLayer.addDoneLoadingListener(new Runnable() {

                        @Override

                        public void run() {

                            mMapView.setViewpointGeometryAsync(mainShapefileLayer.getFullExtent());

                        }

                    });

                }

                mainArcGISMap.getOperationalLayers().add(mainShapefileLayer);



            }

        });

    }



    @Override

    protected void onPause() {

        super.onPause();

        mMapView.pause();

    }



    @Override

    protected void onResume() {

        super.onResume();

        mMapView.resume();

    }



    @Override

    protected void onDestroy() {

        super.onDestroy();

        mMapView.dispose();

    }



}