Thanks Mark,
Works like a charm.
Luiz
2012/7/27 Mark Murphy <mmur...@commonsware.com>
> On Fri, Jul 27, 2012 at 2:33 PM, Luiz Fernando Rodrigues
> <emaild...@gmail.com> wrote:
> > In my application I launch an intent to be opened in the google maps
> > aplication.
> >
> > String uri = "geo:0,0?q=" + announcement.getAttribute(MapRegion.ANN_GEO)
> +
> > "(" + announcement.getAttribute(MapRegion.ID) + ")";
> > Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
> > intent.setData(Uri.parse(uri));
> > startActivity(intent);
> >
> > When the device doesn't have the maps API then my application crashes.
>
> Technically speaking, you are crashing because nobody has an activity
> that handles that particular geo: scheme. Other apps might support
> that scheme, beyond Google Maps (e.g., OsmAnd).
>
> > This feature is optional and I would like to use the maps API externally.
> >
> > How can I detect if the maps API is installed so I can protect my code?
>
> You do not want to "detect if the maps API is installed". You want to
> detect whether something can handle your startActivity() request.
> Again, some users may have devices with other map applications that
> can handle geo: Uri values.
>
> To do that, use resolveActivity() on PackageManager -- if that returns
> null (or if queryIntentActivities() returns an empty list, if you
> prefer), you know nothing can handle your startActivity() call with
> that Intent.
>
> --
> Mark Murphy (a Commons Guy)
> http://commonsware.com | http://github.com/commonsguy
> http://commonsware.com/blog | http://twitter.com/commonsguy
>
> _The Busy Coder's Guide to Android Development_ Version 3.8 Available!
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