【android】Location-based Service

Geocoding is a concept used toconvert an address(or location) to a latitude/longitude pair.

It's provided inandroid.locatin.Geocoder with the following methods.

getFromLocation
getFromLocationName
getFromLocationName*

The way to get location manager service is as below. LocationManager locMgr = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
The LocationManager service is a system-level service. System-level services are services that you obtain from the context using the service name; you don't instantiate them directly, and it also provides geographical location details by using three types of location providers:

GPS providers LocationManager.GPS_PROVIDER
Network providers LocationManager.NETWORK_PROVIDER
passive provider LocationManager.PASSIVE_PROVIDER

Permissions:

android.permission.ACCESS_FINE_LOCATION
android.permission.ACCESS_COARSE_LOCATION

Use the flowing source to invoke location settings screen. startActivityForResult(new Intent(android.provider.Settings.ACTION_LOCATIN_SOURCE_SETTINGS), 0)
GPX: GPS Exchange Format KML: Keyhole Markup Language
Use MyLocationOverLay to show where you are now.

<Receiver android:name=".ProximityReceiver">    <intent-filter>        <action android:name="com.androidbook.android.intent.PROXIMITY_ALERT" />       <data android:scheme="geo" />    </intent-filter></Receiver>

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