CODEWITHSUNDEEP
google-mapsgeolocation
reggie
reggie

Reputation: 3674

Interacting with Google's Geolocation Detection

I have two issues with Google's location detection. I am using the basic code of this example: http://code.google.com/intl/de-DE/apis/maps/documentation/javascript/examples/map-geolocation.html

1.) When a visitor declines his location to be detected, then the map will not show. That cripples the site. How can I show a fallback map with standard functionality and without location detection?

2.) Is there a way to interact with the result of the browser dialogue that asks the viewer to detect his location? If a viewer declines his location to be detected and if the above point 1.) is not possible, then it would be good to hide the map alltogether.

Upvotes: 0

Views: 509

Answers (2)

Yuri Gadow
Yuri Gadow

Reputation: 1813

In the else part of the handleNoGeolocation function you would provide your fallback code giving a default location or another means of location detection.

Here's an alternative structure for the functions that's a little drier and uses Google's IP geolocation for fallback:

if (navigator.geolocation) {
  navigator.geolocation.getCurrentPosition(updatePosition, ipPosition, { options... });
} else {
  ipPosition();
}

function ipPosition() {
  updatePosition(google.loader.ClientLocation);
}

function updatePosition(position) {
  if (position == null) {
    return updatePosition(defaultPlace());
  }

  // Firefox 3.6 passes in a non-standard position object with lat/lng at the top level instead of in .coords
  var coords = (position.hasOwnProperty("coords")) ? position.coords : position;
  if (coords == null) {
    return updatePosition(defaultPlace());
  }

  [...]
}

Upvotes: 2

Niklas Wulff
Niklas Wulff

Reputation: 3524

In that sample there is a function handleNoGeolocation that they use when the user don't have or declines positioning. With the same technique you should be able to handle the hiding of the map.

Upvotes: 0

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