I am very new to android, java and javascript coding.
I am trying to get current GPS co-ordinates and track it thereafter on an Android device. I am using webview and the majority of the code is written in javascript.
I have searched a lot for a few days and tried many different ways but I am unable to get GPS co-ordinates on the android device. Please have a look at the code and hel pme figure out why I am not getting the GPS location.
A few things to point are - 1. I downloaded and checked other sensor apps and can see the current GPS co-ordinates being shown (so the GPS is working on the device). 2. When I run my code, I see the GPS searching icon in the notification area, it keeps blinking but never fixes. 3. When I run only the HTML file with the javascript on a laptop browser, it ask permission to share location and then it gives the co-ordinates, however the same file does not show anything in android.
Please have a look at the code below and help me figure this out. I have tried a lot and am posting this as my last hope.
The manifest file has the following permissions -
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_GPS" />
<uses-permission android:name="android.permission.ACCESS_ASSISTED_GPS" />
<uses-permission android:name="android.permission.ACCESS_LOCATION" />
The main java code in Android has -
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
webView = new WebView(this);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setUseWideViewPort(true);
webView.loadUrl("file:///android_asset/mymap.html");
setContentView(webView);
}
And the HTML file with the javascript is -
<!DOCTYPE html>
<html>
<body onunload="OnUnload()" onload="getLocation()">
<p id="demo">Your coordinates:</p>
<script>
var watchID;
var x=document.getElementById("demo");
function getLocation()
{
if (navigator.geolocation)
{
var options = {maximumAge:600000, timeout:100000, enableHighAccuracy: true};
watchID = navigator.geolocation.watchPosition(showPosition,showError,options);
}
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;
}
}
function OnUnload()
{
alert ("The current document will be unloaded!");
navigator.geolocation.clearWatch(watchID);
}
</script>
</body>
</html>
Thanks a lot in advance, axs
