Why does the geolocation script in android studio

C

corerambler2018-06-09 21:26:46

Android

corerambler, 2018-06-09 21:26:46

Why does the geolocation script in android studio - webView not work?

Hello. I compiled a simple application in android stuio, which, when launched, opens an html file from the assets folder.
In this html file javascript, jquery works fine but geolocation function doesn't work https://www.w3schools.com/HTML/tryit.asp?filename=...

MainActivity.java

package com.tutorials.hp.webviewer;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebView;

public class MainActivity extends AppCompatActivity {

    WebView webView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        webView= (WebView) findViewById(R.id.myWebview);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setDomStorageEnabled(true);
        webView.loadUrl("file:///android_asset/Campo.html");

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

            }
        });
    }

    /*
    LOAD WEBSITE
     */

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.assetsID) {

            //LOAD FROM ASSETS
            webView.loadUrl("file:///android_asset/Campo.html");

            return true;
        }else if (id == R.id.assetszID) {

            //LOAD FROM ASSETS
            webView.loadUrl("file:///android_asset/Campo2.html");

            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Campo.thml (used as index)

<html>
<head>
    <title>Главная страница</title>
    <link rel="stylesheet" href="css/style.css" type="text/css">
</head>

<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/scripts.js"></script>

<p>Click the button to get your coordinates.</p>

<button onclick="getLocation()">Try It</button>

<p id="demo"></p>


</body>
</html>

scripts.js

var x = document.getElementById("demo");

function getLocation() {
    if (navigator.geolocation) {
        navigator.geolocation.getCurrentPosition(showPosition, showError);
    } else {
        x.innerHTML = "Geolocation is not supported by this browser.";
    }
}

function showPosition(position) {
    x.innerHTML = "Latitude: " + position.coords.latitude +
    "<br>Longitude: " + position.coords.longitude;
}

function showError(error) {
    switch(error.code) {
        case error.PERMISSION_DENIED:
            x.innerHTML = "User denied the request for Geolocation."
            break;
        case error.POSITION_UNAVAILABLE:
            x.innerHTML = "Location information is unavailable."
            break;
        case error.TIMEOUT:
            x.innerHTML = "The request to get user location timed out."
            break;
        case error.UNKNOWN_ERROR:
            x.innerHTML = "An unknown error occurred."
            break;
    }
}

How can I start the geolocation function?

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1 answer(s)

G

GavriKos, 2018-06-09
@GavriKos

Perhaps there are not enough permissions for the application. Look in Google how to add permissions to the manifest.
Or perhaps webView simply does not provide such functionality.