MainActivity.java

// Created by plusminus on 18:23:13 - 03.10.2008
package org.osmdroid.google.sample;

import android.Manifest;
import android.app.ListActivity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;

import org.osmdroid.google.wrapper.v2.MapFactory;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MainActivity extends ListActivity {
    boolean isV1Supported = false;
    boolean isV2Supported = false;
    boolean isGooglePlayServicesInstalled = false;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Request permissions to support Android Marshmallow and above devices
        if (Build.VERSION.SDK_INT >= 23) {
            checkPermissions();
        }


        GoogleApiAvailability api = GoogleApiAvailability.getInstance();
        int code = api.isGooglePlayServicesAvailable(this);
        if (code == ConnectionResult.SUCCESS) {
            // Do Your Stuff Here
            isGooglePlayServicesInstalled=true;
        }
        isV1Supported = MapFactory.isGoogleMapsV1Supported();
        isV2Supported = MapFactory.isGoogleMapsV2Supported(this);


        // Generate a ListView with Sample Maps
        final ArrayList<String> list = new ArrayList<String>();
        list.add("Google Maps v2 (out of the box)");
        //list.add("OSMDroid using Bing for tiles");    //MOVE INTO osmdroid-android and the Open Map sample application
        list.add("Google Maps v1 via the osmdroid APIs");
        list.add("Google Maps v2 via the osmdroid APIs");

        this.setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list));
    }

    @Override
    protected void onListItemClick(final ListView l, final View v, final int position, final long id) {
        switch (position) {
            case 0:
                if (isGooglePlayServicesInstalled && isV2Supported) {
                    this.startActivity(new Intent(this, MapsActivity.class));
                } else
                    Toast.makeText(this, "Not available on your device", Toast.LENGTH_LONG).show();
                break;
            //case 1: MOVED
              //  this.startActivity(new Intent(this, OsmMapActivity.class));
                //break;
            case 1:
                if (isGooglePlayServicesInstalled && isV1Supported) {
                    this.startActivity(new Intent(this, Googlev1WrapperSample.class));
                } else
                    Toast.makeText(this, "Not available on your device", Toast.LENGTH_LONG).show();
                break;
            case 2:
                if (isGooglePlayServicesInstalled && isV2Supported) {
                    this.startActivity(new Intent(this, Googlev2WrapperSample.class));
                } else
                    Toast.makeText(this, "Not available on your device", Toast.LENGTH_LONG).show();
                break;

        }
    }

    // START PERMISSION CHECK
    final private int REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS = 124;

    private void checkPermissions() {
        List<String> permissions = new ArrayList<String>();
        String message = "OSMDroid permissions:";
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            permissions.add(Manifest.permission.ACCESS_FINE_LOCATION);
            message += "\nStorage access to store map tiles.";
        }
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            permissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
            message += "\nLocation to show user location.";
        }
        if (!permissions.isEmpty()) {
            Toast.makeText(this, message, Toast.LENGTH_LONG).show();
            String[] params = permissions.toArray(new String[permissions.size()]);
            requestPermissions(params, REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
        } // else: We already have permissions, so handle as normal
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        switch (requestCode) {
            case REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS: {
                Map<String, Integer> perms = new HashMap<String, Integer>();
                // Initial
                perms.put(Manifest.permission.ACCESS_FINE_LOCATION, PackageManager.PERMISSION_GRANTED);
                perms.put(Manifest.permission.WRITE_EXTERNAL_STORAGE, PackageManager.PERMISSION_GRANTED);
                // Fill with results
                for (int i = 0; i < permissions.length; i++)
                    perms.put(permissions[i], grantResults[i]);
                // Check for ACCESS_FINE_LOCATION and WRITE_EXTERNAL_STORAGE
                Boolean location = perms.get(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED;
                Boolean storage = perms.get(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
                if (location && storage) {
                    // All Permissions Granted
                    Toast.makeText(MainActivity.this, "All permissions granted", Toast.LENGTH_SHORT).show();
                } else if (location) {
                    Toast.makeText(this, "Storage permission is required to store map tiles to reduce data usage and for offline usage.", Toast.LENGTH_LONG).show();
                } else if (storage) {
                    Toast.makeText(this, "Location permission is required to show the user's location on map.", Toast.LENGTH_LONG).show();
                } else { // !location && !storage case
                    // Permission Denied
                    Toast.makeText(MainActivity.this, "Storage permission is required to store map tiles to reduce data usage and for offline usage." +
                            "\nLocation permission is required to show the user's location on map.", Toast.LENGTH_SHORT).show();
                }
            }
            break;
            default:
                super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }
    // END PERMISSION CHECK
}