Android GPS Learning

because the project to use GPS positioning, learning the next, then the learning results recorded.

To add permissions in the manifest file:

    <uses-permission android:name= "Android.permission.ACCESS_COARSE_LOCATION" ></uses-permission>    <uses-permission android:name= "Android.permission.ACCESS_FINE_LOCATION" ></uses-permission>    < Uses-permission android:name= "Android.permission.INTERNET" ></uses-permission>    <uses-permission Android:name= "Android.permission.ACCESS_NETWORK_STATE" ></uses-permission>

several objects used, Locationmanager, Locationlistener, location.

*locationmanager Location Manager, you must first create a Locationmanager object if you want to manipulate the device.

Locationmanger locationmanager= (Locationmanager) This.getsystemservice (Context.location_service);

* Locationlistener position Listener, monitor position change, monitor device switch and status. Used primarily to obtain location, in the inner class implementation:

   Class Mylisten implements Locationlistener    {        @Override public        void onlocationchanged (location location) {            //Position changed            LOG.I (TAG, "onlocationchanged ...");            if (Mhandler! = null)            {                Message msg = mhandler.obtainmessage (refresh_location, location);                Msg.sendtotarget ();            }        }        @Override public        void onproviderdisabled (String provider) {            //        }        @Override public        Void Onproviderenabled (String provider) {                    }        @Override public        void Onstatuschanged (string provider, int Status, Bundle Extras) {            //        }            }

Binding monitoring:

            Mylistengps = new Mylisten ();                        Locationmanager.requestlocationupdates (Locationmanager.gps_provider,                    check_position_interval, 0, MyListenGPS );

4 parameters in Requestlocationupdates (String provider, long mintime, float mindistance, Locationlistener listener):

String provider: Device provider, Locationmanager.gps_provider, and Locationmanager.network_provider
Long mintime: Update period of position information, in milliseconds;

Float mindistance: Position change minimum Distance: Position information is updated when the location distance changes beyond this value

Locationlistener Listener: Supervisor Listener

* location information, such as time, latitude and longitude, altitude, etc. can be obtained through location.

Location Location=locationmanager.getlastknownlocation (locationmanager.gps_provider);// Active acquisition of Locationsimpledateformat DateFormat = new SimpleDateFormat ("yyyy mm month DD Day HH:mm:ss");                Date date = new Date (Location.gettime ());                                String message = "Time:" + dateformat.format (date) + "\ n"                        + "Longitude:" + location.getlongitude () + "\ n"                        + "Latitude:" + location . Getlatitude () + "\ n";

Android GPS Learning