I amd making this android applcation and am kinda stuck with a problem. the thing is that in my application, one activity sends the users current location to the database, and using this very location i refer another table in the database where i fetch these values, where this table consists of other users location. so now what i want to do is using the users current location and refering the other users location want to compute and than choose the closest user, i have gone ahead and made a .php file. and when run on the web browser shows me the correct ans. but does not seem to work in the application. mind you the php file tat makes this computaton uses a javascript. this is the php file that i call in my async task which finds the closest user. the php file
<?php
$response = array();
include 'db_con.php';
// run query
$query = mysqli_query($con,"SELECT *FROM friend WHERE d_status='0'");
// look through query
if (!empty($query)) {
// check for empty result
$response["details"] = array();
while($row =mysqli_fetch_assoc($query)){
$details= array();
$details["Latitude"]= $row["d_latitude"];
$details["Longitude"]= $row["d_longitude"];
array_push($response["details"], $details);
}
}
// success
$response["success"] = 1;
// echoing JSON response
echo json_encode($response);
mysqli_close($con);
$lat=15.493403;
$longi=73.820617;
?>
<!DOCTYPE html>
<html>
<body>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2 /jquery.min.js"></script>
<script type="text/javascript">
var latlon = new Array();
var map;
var lat=15.493403;//"<?php echo $lat; ?>";
var longi=73.820617;//"<?php echo $longi; ?>";
var geocoder;
var origin =new google.maps.LatLng(lat,longi);
function mapLoad(){
var data="<?php echo $response;?>";
var data_parsed = JSON.parse(data);
var resp = data_parsed['details'];
for (var i in resp) {
latlon[i]=(resp[i].Latitude+","+resp[i].Longitude);
//alert("latit:"+latlon[i]);
}
calculateDistances();
}
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
function calculateDistances() {
var service = new google.maps.DistanceMatrixService();
service.getDistanceMatrix({
origins:[origin], //array of origins
destinations: latlon, //array of destinations
travelMode: google.maps.TravelMode.DRIVING,
unitSystem: google.maps.UnitSystem.METRIC,
avoidHighways: false,
avoidTolls: false
}, callback); //agettaxicoor
}
function callback(response, status) {
if (status != google.maps.DistanceMatrixStatus.OK) {
alert('Error was: ' + status);
} else {
//we only have one origin so there should only be one row
var routes = response.rows[0];
//need to find the shortest
var lowest = Number.POSITIVE_INFINITY;
var tmp;
var shortestRouteIdx;
var resultText = "Possible Routes: <br/>";
for (var i = routes.elements.length - 1; i >= 0; i--) {
tmp = routes.elements[i].duration.value;
resultText += "Route " + latlon[i] + ": " + tmp + "<br/>";
if (tmp < lowest) {
lowest = tmp;
shortestRouteIdx = i;
}
}
//log the routes and duration.
$('#results').html(resultText);
//get the shortest route
var shortestRoute = latlon[shortestRouteIdx];
var res = JSON.stringify(shortestRoute .split(","));
//alert(res);
location.href="atestb.php?Result=" + res; //this where the result is set.
}
}
</script>
<body onload="mapLoad();"></body>
</body>
</html>
but the problem now is when i use the debug tool in eclipse i see that the entire code after
DOCTYPE html
becomes the output of the async task json call.
so basically all i want to do is on calling this php file from the app, it should compute the closest user and the return the latitude and longitude value of the closest user to the application.maybe by either updating the same php file variable or updating another php file variable like the above case i know this may not be the correct way to do this, so any help would be gud.
