A step-by-step guide for beginners on moving and removing push pins in Ajax Bing Maps version 7

Question

A step-by-step guide for beginners on moving and removing push pins in Ajax Bing Maps version 7

I am currently exploring the world of maps. I am now looking to develop a method that will update my push pin if there is already one present.

Firstly, I attempted to use setLocation(newLocation) but unfortunately, it seems like my client side code wasn't even executed (I suspect there might be a syntax error, though Chrome did not report any errors).

Next, I tried to research how to delete the existing pin and create a new one, but I couldn't find any helpful resources on http://msdn.microsoft.com/en-us/library/gg427610.aspx. Perhaps I need to refine my search strategies.

If anyone could offer some guidance on how to relocate a push pin and also how to remove one, I would greatly appreciate it. Thank you in advance!

var loc = new Microsoft.Maps.Location(lat, lon);

var pin = new Microsoft.Maps.Pushpin(loc);

Edit: partial solution provided

To remove a push pin:

if (pin != null)
{
    map.entities.remove(pin)
}

javascript bing-maps

Answer 1

Answer №1

If you need to move a pushpin on a map, the setLocation() function is what you should use. Have you tried calling setLocation from an event handler on the map? If so, make sure your event handler is set up correctly to be triggered. Once you have defined a pushpin (with the variable name myPushpin) and placed it on the map, running the following code will move it:

// Move pushpin to "38.0", "-97.0"
var loc = new Microsoft.Maps.Location(38.0, -97.0);
myPushpin.setLocation(loc);

To see this live, visit the Ajax Bing Maps v7 interactive SDK, edit the code in blue at the bottom center of the screen with different coordinates, click Run, and watch the pushpin move.

If you want to delete a pushpin that has been added to the map, you must remove it from the EntityCollection where it was originally added. For instance, if you added the Pushpin to yourmap.entities, here's how you can remove it:

var index = yourmap.entities.indexOf(myPushpin);
if (index != -1) {
    yourmap.entities.removeAt(index);
}

Alternatively, you can directly remove it without using an index:

yourmap.entities.remove(myPushpin);

UPDATE: To delete a pushpin when the user clicks on it, you first need to identify the specific pushpin clicked within the click event handler. You can obtain the pushpin from the target Property of the MouseEventArgs Object passed into your click handler:

Microsoft.Maps.Events.addHandler(pushpin, 'click', function (mouseEvent) {
    var pushPinThatWasClicked = mouseEvent.target;
    // Handle pushPinThatWasClicked as needed
});

Answer 2

If you need to move a pushpin on a map, the setLocation() function is what you should use. Have you tried calling setLocation from an event handler on the map? If so, make sure your event handler is set up correctly to be triggered. Once you have defined a pushpin (with the variable name myPushpin) and placed it on the map, running the following code will move it:

// Move pushpin to "38.0", "-97.0"
var loc = new Microsoft.Maps.Location(38.0, -97.0);
myPushpin.setLocation(loc);

To see this live, visit the Ajax Bing Maps v7 interactive SDK, edit the code in blue at the bottom center of the screen with different coordinates, click Run, and watch the pushpin move.

If you want to delete a pushpin that has been added to the map, you must remove it from the EntityCollection where it was originally added. For instance, if you added the Pushpin to yourmap.entities, here's how you can remove it:

var index = yourmap.entities.indexOf(myPushpin);
if (index != -1) {
    yourmap.entities.removeAt(index);
}

Alternatively, you can directly remove it without using an index:

yourmap.entities.remove(myPushpin);

UPDATE: To delete a pushpin when the user clicks on it, you first need to identify the specific pushpin clicked within the click event handler. You can obtain the pushpin from the target Property of the MouseEventArgs Object passed into your click handler:

Microsoft.Maps.Events.addHandler(pushpin, 'click', function (mouseEvent) {
    var pushPinThatWasClicked = mouseEvent.target;
    // Handle pushPinThatWasClicked as needed
});

Answer 3

Answer №2

This script provides a method for clearing all pushpins from the map:

//clear all pushpins
function removePushpins()
{
  for(var index=map.entities.getLength()-1;index>=0;index--) 
  {
      var pushpin = map.entities.get(index); 
      if (pushpin instanceof Microsoft.Maps.Pushpin) { 
        map.entities.remove(pushpin);  
      }
   } 
}

Answer 4

This script provides a method for clearing all pushpins from the map:

//clear all pushpins
function removePushpins()
{
  for(var index=map.entities.getLength()-1;index>=0;index--) 
  {
      var pushpin = map.entities.get(index); 
      if (pushpin instanceof Microsoft.Maps.Pushpin) { 
        map.entities.remove(pushpin);  
      }
   } 
}

A step-by-step guide for beginners on moving and removing push pins in Ajax Bing Maps version 7

Answer №1

Answer №2

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