gps accuracy android

) locationmanagerdemoactivity. this. getsystemservice (context. location_service); // Create a New Criteria = new criteria (); // set the accuracy of criteria. setaccuracy (criteria. accuracy_coarse); criteria. setpowerrequirement (criteria. power_low); criteria. setaltituderequired (false); criteria. setbearingrequired (false); criteria. setspeedrequired (false); criteria. setcostallowed (false); // obtain the qualified provider bestproviders = locat

LBS (Location Based Services) is based on geographical service, there are at least two layers of meaning, the first to be able to easily obtain the current geographical location, such as latitude and longitude elevation, and the other is based on the current position to provide value-added services, such as to find nearby gas stations, Restaurants, hotels and so on. This is the first step: Get the user's current location, we can use the Android

provider BestProviders = locationManager . GetBestProvider (criteria, false ); TxtCrerita. setText ("best provider:" + bestProviders ); } }); Www.2cto.com Conclusion (see GPS again ): From the above knowledge, we can know that we need to use the LocationManager System Service to use the GPS service on the Android platform. We can use the Context. getSystemServi

measured in degrees* expected accuracy is measured in meters*/int (*inject_location)(double latitude, double longitude, float accuracy);/*** Specifies that the next call to start will not use the* information defined in the flags. GPS_DELETE_ALL is passed for* a cold start.*/void (*delete_aiding_data)(GpsAidingData flags);/*** fix_frequency represents the time between fixes in seconds.* Set fix_frequency t

1. enable the system GPS Service Locationmanager = (locationmanager) This. getsystemservice (context. location_service );If (locationmanager. isproviderenabled (Android. Location. locationmanager. gps_provider )){Toast. maketext (this, "GPS module normal", Toast. length_short). Show ();Return;} 2. Set service information to be queried (fill location data clas

:" + longtitude;Msg + = "\ naltitude:" + altitude;Msg + = "\ naccuracy:" + accuracy;Msg + = "\ nbearing:" + bearing;Msg + = "\ nspeed:" + speed;Msg + = "\ ntime:" + time;Tv1.setText (msg );// Toast. makeText (this, msg, Toast. LENGTH_SHORT). show ();}GpsStatus. Listener listener;Private GpsStatus gpsstatus;Private final String tag = "TEST_MAY ";Private LocationManager mgr;Private Button btn;Private TextView tv1, tv2;Private String best;Private double

) { ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo(); ifnull activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) { returntrue; } returnfalse; }4. Determine how the device is positionedAndroid phones have 3 modes of targeting1. Network mode: The positioning

();Env-> CallVoidMethod (mCallbacksObj, method_reportLocation, location-> flags,(Jdouble) location-> latitude, (jdouble) location-> longpolling,(Jdouble) location-> altitude,(Jfloat) location-> speed, (jfloat) location-> bearing,(Jfloat) location-> accuracy, (jlong) location-> timestamp );CheckAndClearExceptionFromCallback (env, _ FUNCTION __);} It is defined as follows:Static jmethodID method_reportLocation; and:Method_reportLocation = env-> GetMeth

Today, due to work needs, I took out a previously written GPS test program and modified it again. I wrote this program for 11 years. It was not long before I learned Android development. It was an experimental work. Work now needs to be done again. At the same time, I found that I do not know much about the GPS service of And