我是离子和棱镜的新手，我正在开发一个跟踪应用程序，我无法计算跟踪距离并将其存储在数据库中。
这是我的index.html
<!DOCTYPE html>
<html ng-app="starter">
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title></title>
<link rel="manifest" href="manifest.json">
<link href="css/ionic.app.css" rel="stylesheet">
<script src="lib/ionic/js/ionic.bundle.js"></script>
<script src="lib/ngCordova/ng-cordova.js"></script>
<script src="cordova.js"></script>
<script src="js/app.js"></script>
<script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAHe3efHByU2G1ECBpenC8ZpiXlpO7GFXA "></script>
</head>
<body ng-controller="MapCtrl">
<ion-pane>
<ion-header-bar class="bar-stable">
<h1 class="title">Ionic Maps</h1>
</ion-header-bar>
<ion-content ng-init="first(User)">
<div class="padding">
<button class="button button-large button-calm" ng-click="starttrack(User)">Start</button>
<button class="button button-large button-assertive" ng-click="endtrack(User)">End</button>
</div>
<div>coordinates = {{getText(User)}}</div>
<button class="button button-small button-balanced" ng-click="dist()">Show distance</button>
</ion-content>
</ion-pane>
</body>
</html>
这是我的app.js
.factory('AllServices', function($http) {
return {
drivertrackFunction: function(User) {
var data = { coordinates: User.coordinates,
dis: User.dis};
var link = 'http://localhost/track.php';
return $http.post(link,data);
}
};
})
.controller('MapCtrl', function($scope, filterFilter, $state, $cordovaGeolocation, $interval, AllServices) {
$scope.User = {};
$scope.User.mysrclat= 0;
$scope.User.mysrclong = 0;
$scope.User.timer = "";
$scope.addstring=[];
$scope.addstring1 = [];
$scope.User.string1="";
$scope.User.coordinates=undefined;
$scope.User.string3="";
$scope.lat1 = "";
$scope.lon1 = "";
$scope.lat2 = "";
$scope.lon2 = "";
$scope.User.d = "";
$scope.User.totalDis="";
$scope.originals = [];
$scope.User.temp = 0;
$scope.points = "";
$scope.User.pLen = "";
$scope.User.len = "";
$scope.User.origin1 = "";
$scope.User.destinationB = "";
$scope.User.geocoder = "";
$scope.User.service = "";
$scope.User.originList ="";
$scope.User.destinationList = "";
$scope.User.outputDiv = "";
$scope.User.TotDis = "";
$scope.User.TotDur = "";
$scope.User.dis = 0;
$scope.first = function(User) {
if(navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function (position) {
$scope.User.mysrclat = position.coords.latitude;
$scope.User.mysrclong = position.coords.longitude;
$scope.User.string1 = $scope.User.mysrclat + "," + $scope.User.mysrclong;
console.log($scope.User.mysrclat);
});
}
};
$scope.track = function(User) {
$scope.first(User);
};
function distance(User) {
var R = 6371; // km (change this constant to get miles)
var dLat = ($scope.lat2-$scope.lat1) * Math.PI / 180;
var dLon = ($scope.lon2-$scope.lon1) * Math.PI / 180;
var a = Math.sin(dLat/2) * Math.sin(dLat/2) + Math.cos($scope.lat1 * Math.PI / 180 ) * Math.cos($scope.lat2 * Math.PI / 180 ) * Math.sin(dLon/2) * Math.sin(dLon/2);
var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
$scope.User.d = R * c;
if ($scope.User.d>1) {
return Math.round($scope.d)+"km";
}
else {
if ($scope.User.d<=1) {
return Math.round($scope.d*1000)+"m";
}
}
return $scope.User.d;
};
$scope.starttrack = function(User) {
$scope.track(User);
$scope.addstring.push($scope.User.string1);
$scope.addstring1.push($scope.User.string1);
var values = $scope.User.string1.split(",");
$scope.lat1 = $scope.User.mysrclat;
$scope.lon1 = $scope.User.mysrclong;
$scope.lat2 = values[0];
$scope.lon2 = values[1];
distance();
$scope.User.timer = $interval(function() {
if($scope.addstring != "") {
$scope.track(User);
$scope.lat1 = $scope.lat2;
$scope.lon1 = $scope.lon2;
$scope.lat2 = $scope.User.mysrclat;
$scope.lon2 = $scope.User.mysrclong;
distance();
console.log($scope.User.d);
$scope.User.dis = $scope.User.dis + $scope.User.d;
$scope.addstring.push("|" + $scope.User.string1);
$scope.addstring1.push($scope.User.string1);
}
}, 10000);
};
$scope.getText = function(User){
return $scope.addstring.join("");
};
$scope.endtrack = function(User, d) {
if(angular.isDefined($scope.User.timer)) {
$interval.cancel($scope.User.timer);
$scope.User.timer = undefined;
$scope.User.string2 = $scope.addstring[0];
for(var i=1; i<($scope.addstring).length; i++) {
$scope.User.string2 = $scope.User.string2 + $scope.addstring[i];
}
$scope.User.coordinates = $scope.User.string2;
$scope.User.dis = $scope.User.dis + " KM";
console.log($scope.User.dis);
AllServices.drivertrackFunction(User)
.then(function(response) {
})
.catch(function(error) {
console.log(error);
});
}
};
$scope.dist = function() {
distance();
console.log($scope.User.d, "Km");
};
})
这是我的PHP代码
<?php
include("connection.php");
$data = json_decode(file_get_contents("php://input"));
$coordinates = $data->coordinates;
$dis = $data->dis;
$q = "INSERT INTO track (Coordinates, Distance) VALUES (:coordinates, :dis)";
$query = $db->prepare($q);
$execute = $query->execute(array(
":coordinates" => $coordinates,
":dis" => $dis
));
echo json_encode($data);
?>