[android-developers] Radar View

Hi,
i want to display a radar view on my app using gps
i found this piece of code

/* Intent i = new Intent("com.google.android.radar.SHOW_RADAR");
i.putExtra("latitude", 37.422f);
i.putExtra("longitude", -122.084f);
startActivity(i);*/

but i doesn't realldy work with me,is there any library/pack to add?
i'll be grateful for your help

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