Android GPS Learn Latitude

Last Update:2015-08-21 Source: Internet

Author: User

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<pre><pre>1 // Get location Management Services 2 Private Locationmanager locationmanager; 3 String mprovidername = "";</pre></pre><pre><pre>1 Private void onCreate () {2 locationmanager = (locationmanager) getsystemservice (context.location_ SERVICE); 3 }</pre></pre>3. at OnStart ()<pre>1 @Override2 public voidOnStart () {3 Super. OnStart ();4 if(getintent () = =NULL|| Getintent (). Getstringextra ("city") = =NULL5|| ". equals (getintent (). getstringextra (" City "))) {6 if(opengpssettings ()) {7Location lastknownlocation =NULL;8Lastknownlocation =Locationmanager9 . Getlastknownlocation (locationmanager.gps_provider);TenMprovidername =locationmanager.gps_provider; one if(lastknownlocation = =NULL) { aLastknownlocation =Locationmanager - . Getlastknownlocation (locationmanager.network_provider); -Mprovidername =locationmanager.network_provider; the } - if(mprovidername! =NULL&& "". Equals (mprovidername)) { -Locationmanager.requestlocationupdates (mprovidername, 1000, -1, locationlistener); + } - } + } a}</pre>To determine whether to turn on the gps:<pre>1 /**whether the GPS module is present or open **/2 Private Booleanopengpssettings () {3Locationmanager ALM = (locationmanager) this4 . Getsystemservice (context.location_service);5 if(alm.isproviderenabled (android.location.LocationManager.GPS_PROVIDER)) {6Toast.maketext ( this, "gps module normal", toast.length_short). show ();7 return true;8 }9 TenToast.maketext ( this, "please Open gps! ", toast.length_short). show (); oneIntent Intent =NewIntent (settings.action_security_settings); aStartactivityforresult (intent, 0);//This is the return to the Get interface after Setup is complete - return false; -}</pre>Handling Locationmanager in onpause, Onresume<pre>1 /**2 * It is important to reset the Locationmanager to listen to the MGR Get provider the process is not successful at one time3 * Mgr.getlastknownlocation is likely to return NULL if only one listener is registered in Initprovider (), it's almost impossible to Succeed.4 */5 @Override6 public voidonresume () {7 Super. Onresume ();8 if(locationmanager! =NULL&&!Utils.isempty (mprovidername)) {9Locationmanager.requestlocationupdates (mprovidername, 1000, 1,Ten locationlistener); one } a } - - @Override the public voidonPause () { - Super. OnPause (); - //Unregister listener - if(locationmanager! =NULL) { + locationmanager.removeupdates (locationlistener); - } +}</pre>Monitor position change:<pre>1 PrivateLocationlistener Locationlistener =NewLocationlistener () {2 3 /**4 * Triggered when position information changes5 */6 public voidonlocationchanged (location Location) {7 8 updatetonewlocation (location);9 }Ten one /** a * Triggered when GPS status changes - */ - public voidOnstatuschanged (String provider,intstatus, Bundle Extras) { the Switch(status) { - //when the GPS status is visible - caselocationprovider.available: - //Current GPS status is visible + break; - //when the GPS status is outside the service area + caselocationprovider.out_of_service: a //The current GPS status is outside the service area status at break; - //when the GPS status is paused service - caselocationprovider.temporarily_unavailable: - //Current GPS status is paused service status - break; - } in } - to /** + * Triggered when GPS is turned on - */ the public voidonproviderenabled (String Provider) { *Location location =locationmanager.getlastknownlocation (provider); $ updatetonewlocation (location);Panax Notoginseng } - the /** + * Triggered when GPS is disabled a */ the public voidonproviderdisabled (String Provider) { +Updatetonewlocation (NULL); - } $};</pre>/** Listener for service Management Objects */ Binding monitoring, with 4 parameters Parameter 1, device: There are two kinds of gps_provider and Network_provider Parameter 2, Position information update period, in milliseconds Parameter 3, position change minimum distance: location information is updated when the location distance changes beyond this value Parameter 4, monitoring Note: Parameters 2 and 3, if the parameter 3 is not 0, the parameter 3 is the same, the parameter 3 is 0, the time is updated periodically, The two is 0, is refreshed at any time1 seconds update, or minimum displacement change more than 1 meters update once; Note: This update is very low accuracy, it is recommended to start a thread in the service, sleep (10000) in run, and then execute handler.sendmessage (), update the location Set the listener, the minimum time for automatic Updates is interval n seconds (1 seconds for 1*1000, so write mainly for convenience) or minimum displacement change over n metersProcessing latitude and longitude information, you can request Baidu to obtain detailed address Information.<pre>1 public voidUpdatetonewlocation (Finallocation ) {2 if(location = =NULL) {3Toast.maketext (getapplicationcontext (), "gps location failed",4 toast.length_short). Show ();5 return;6 }7 8LOG.I ("", "longitude:" +location.getlongitude ());9LOG.I ("", "latitude:" +location.getlatitude ()); -}</pre>When you start to start listening position changes, you can set:<pre>1String ServiceName =context.location_service;2Locationmanager = (locationmanager) this. Getsystemservice (serviceName);3 //Find service Information4Criteria =NewCriteria ();5 //Set positioning accuracy Criteria.accuracy_coarse relatively coarse, criteria.accuracy_fine is relatively fine6 criteria.setaccuracy (criteria.accuracy_fine);7 //set whether speed is required8Criteria.setspeedrequired (false);9 //Set whether altitude information is requiredTenCriteria.setaltituderequired (false); one //Set whether azimuth information is required aCriteria.setbearingrequired (false); - //set whether carrier charges are allowed -Criteria.setcostallowed (true); the //set the demand for power -Criteria.setpowerrequirement (criteria.power_low);//Low power consumption - - //set up query criteria for obtaining geo-location information +String Provider = Locationmanager.getbestprovider (criteria,true);//Get GPS Information</pre><pre><pre>// If you do not set the query requirements, the getlastknownlocation method-descendant parameter is Locationmanager.gps_provider Location location = Locationmanager.getlastknownlocation (provider); // get location updatetonewlocation via GPS ;</pre></pre>Android GPS Learn Latitude

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