sencha touch geolocation get current position not working after 2-3 times on device (iphone 5)

Question

I am trying to fetch the current location each time the user clicks a button.

 function checkConnection() {

  // check if there is connection and call the getcurrent position function
        navigator.geolocation.getCurrentPosition(onLocSuccess, onLocError);   

    }

    function onLocSuccess(position) {



                    var latitude = position.coords.latitude;
                    var longitude = position.coords.longitude;
                    myPosition = new google.maps.LatLng(latitude, longitude);
            //..........
            //..........
            // do something more
            //.....
        }

On the browser this works fine. But on the device (testing on iphone5), after 2-3 times of requesting, this piece of code does not fetch the location. It freezes, resulting in the app to freeze.

But interestingly, if i place an alert inside onLocSuccess it works fine !!!

    function onLocSuccess(position) {


            alert('this alert solves the issue');
            var latitude = position.coords.latitude;
            var longitude = position.coords.longitude;
            myPosition = new google.maps.LatLng(latitude, longitude);
    //..........
    //..........
    // do something more
    //.....
}

What could be wrong ?

Answer 1

使用Google Map API V3的主页按钮实现

Answer 2

Your code seems correct. I guess, there is some other issue behind the app freezing. Still you can try and check this once,

getCurrentLocation : function() {
        var me = this;
        if(navigator.geolocation){
            navigator.geolocation.getCurrentPosition(function(position) {
                me.latitude = position.coords.latitude
                me.longitude =  position.coords.longitude;

                // User's location'
                me.position = new google.maps.LatLng(me.latitude, me.longitude);
            });
        } else {
            Ext.Msg.alert("Sorry, browser does not support geolocation!");
        }  
    }

Answer 3

Finally used settimeout . This works !

 function onLocSuccess(position) {


      setTimeout(function () {
          var latitude = position.coords.latitude;
          var longitude = position.coords.longitude;
          myPosition = new google.maps.LatLng(latitude, longitude);
          //..........
          //..........
          // do something more
          //.....
      }, 50);
  }