Implementation of Android GPS positioning (1)

Today, I spent more than an hour writing a GPS to get the geographic location.CodeSmall examples, including some online code and some modifications to the code, I hope to help you. The specific code is as follows: to use the GPS device of the adnroid platform, you must first add the permission. Therefore, you must add the following permissions:

 

 
  <Uses-Permission Android: Name="Android. Permission. access_fine_location"> </Uses-Permission>
 

 

The specific implementation code is as follows:

First, determine whether the GPS module exists or is Enabled:

 

Code

  Private     Void  Opengpssettings (){
Locationmanager ALM  =  (Locationmanager)  This  
. Getsystemservice (context. location_service );
  If (ALM
. Isproviderenabled (Android. Location. locationmanager. gps_provider )){
Toast. maketext (  This  ,  "  GPS module normal  "  , Toast. length_short)
. Show ();
  Return  ;
}

Toast. maketext (  This  ,  "  Turn on GPS!  " , Toast. length_short). Show ();
Intent intent  =     New  Intent (settings. action_security_settings );
Startactivityforresult (intent,  0  );  //  Return to the get interface after setting.  
  
} 

 

If the function is enabled normally, the display page is displayed. If the function is enabled improperly, the GPS settings page is displayed:

The Code is as follows:

 

Code

  Private     Void  Getlocation ()
{
  //  Get Location Management Service  
  Locationmanager;
String servicename  =  Context. location_service;
Locationmanager  =  (Locationmanager) This  . Getsystemservice (servicename );
  //  Find Service Information  
  Criteria  =     New  Criteria ();
Criteria. setaccuracy (criteria. accuracy_fine );  //  High Precision  
  Criteria. setaltituderequired (  False );
Criteria. setbearingrequired (  False  );
Criteria. setcostallowed (  True  );
Criteria. setpowerrequirement (criteria. power_low );  //  Low Power Consumption  
  
String provider  =  Locationmanager. getbestprovider (criteria,  True  );  // Get GPS information  
  Location  =  Locationmanager. getlastknownlocation (provider );  //  Get location through GPS  
  Updatetonewlocation (location );
  //  Set the listener. The minimum time for automatic update is n seconds (1 second is 1*1000, which is mainly used for convenience) or the minimum displacement is greater than N meters.  
  Locationmanager. requestlocationupdates (provider,  100    *     1000  ,  500  ,
Locationlistener );  }

 

Here we can get the geographic location information, but we still need to display it, so we can use the following method to display it:

 

Code

  Private     Void Updatetonewlocation (location ){

Textview TV1;
TV1  =  (Textview)  This  . Findviewbyid (R. Id. TV1 );
  If  (Location  ! =     Null  ){
  Double  Latitude  =  Location. getlatitude ();
 Double  Longpolling  =  Location. getlongpolling ();
Tv1.settext (  "  Dimension:  "     +  Latitude  +     "  \ N longitude  "     + Longpolling );
}  Else  {
Tv1.settext (  "  Unable to obtain Geographic Information  "  );
}

} 

 

In this way, you can get the geographic location of the current user. At least how to implement the map below will be obtained and displayed below! Thank you for your reference code!