When I use this code
string url = \"somegooglemapsurl.com\";
Intent mapLauncherIntent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(url))
First of all, I'll just point out that getting rid of that selection dialog is not necessarily a good thing to do. You want to give the user as much choice in how they handle data as possible, that's part of the beauty of the Android ecosystem. That said, it isn't fair to judge without understanding your application, so...
You can use the geo
protocol:
http://developer.android.com/guide/appendix/g-app-intents.html
Instead of passing something like maps.google.com/blablabla
format your URI like thisgeo:0,0?q=my+street+address
.
Example:
Intent mapLauncherIntent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse("geo:0,0?q=1111+imaginary+dr"));