Invoking Google Map Applications from an Android a

问题:

I need to show the driving direction using external google map application i found this link http://developer.android.com/guide/appendix/g-app-intents.html ,but the below opens the Maps application to the given location

    Uri uri = Uri.parse("geo:13.070984,80.253639");
    Intent in = new Intent(Intent.ACTION_VIEW, uri);
    startActivity(in);

I need to know is there is any way to pass two geo location to get driving direction.

回答1:

yes its very easy to show the direction if you have the latitude and longitude of both source and destination. Just see the following code:

Intent intent = new Intent(android.content.Intent.ACTION_VIEW,
    Uri.parse("http://maps.google.com/maps?saddr="+latitude_source+","+longitude_source+"&daddr="+latitude_dest+","+longitude_dest));

    startActivity(intent);

Where latitude_source=Latitude of your source longitude_source=Longitude of your source latitude_dest=Latitude of your destination longitude_dest=Longitude of your destination

Just replace these value with your actual data. .Use the above code on some particular event.

Hope this will help you.

回答2:

I've implemented this by firing an intent that uses a Google Maps URL - the Maps application picks it up, and it works. I think it is not officially recommended, but for me is working well.

Intent intent = new Intent(android.content.Intent.ACTION_VIEW,Uri.parse(String.format(http://maps.google.com/maps?saddr=%s&daddr=%s, startAddress, endAddress)));
startActivity(intent);

The above works for location NAMES, you may need to tweak it to use lat/long. Here's an example Google Maps directions URL between two lat/long points that will be useful: http://maps.google.co.uk/maps?f=d&source=s_d&saddr=A685&daddr=M40&hl=en&geocode=FazjPwMdRKPc_w%3BFeS8GgMdNMfr_w&mra=me&mrsp=1,0&sz=5&sll=53.800651,-4.064941&sspn=22.244994,67.631836&ie=UTF8&t=h&z=5

回答3:

You can get routing between two locations with the following URL.

https://maps.google.com/maps?saddr=kedah&daddr=johor

saddr is the start, and daddr is the destination.

Example code:

Intent intent = new Intent(android.content.Intent.ACTION_VIEW,Uri.parse(String.format("http://maps.google.com/maps?saddr=kedah&daddr=johor")));
startActivity(intent);