How to notify the user to enable gpsprovider

i'm working on gpsprovider,If user click on a gps based applications for 开发者_StackOverflow社区suppose map application it has check whether the gps provider enabled or not if not alert the user enable the gpsprovider .

There will be a Broadcast Receivier. Will define a message for requesting the service from any application. Will start service if not started. Will define a message for stating that the application no longer needs it. Will stop service if no app needs it anymore

---

  String provider = Settings.Secure.getString(getContentResolver(),     Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
    if(provider != null ){      
        if(! provider.contains("gps")){    
            // Notify users and show settings if they want to enable GPS
            new AlertDialog.Builder(MessagePage.this)
            .setMessage("GPS is switched off. enable?")
            .setPositiveButton("Enable GPS", new DialogInterface.OnClickListener(){

                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    startActivityForResult(intent, 5);
                }
            })
            .setNegativeButton("Don't do it", new DialogInterface.OnClickListener(){

                public void onClick(DialogInterface dialog, int which) {

                }
            })
            .show();
        }
    }

---

      protected void onActivityResult(int requestCode, int resultCode, Intent data){
       if(requestCode == 5 && resultCode == 0){
           String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
           if(provider != null){
               switch(provider.length()){
               case 0:                     
                    //GPS still not enabled..
                   break;
               default:
                   Toast.makeText(this, "GPS is now enabled.", Toast.LENGTH_LONG).show();
                   break;
               }
           }
       }
       else{
           //the user did not enable his GPS
       }
}

---

AFAIK it is still not possible to start the GPS service programatically. The only thing you can do is open the settings page for the user to change the setting them selves:

if(!LocationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER )) 
{
    Intent myIntent = new Intent( Settings.ACTION_SECURITY_SETTINGS ); startActivity(myIntent);
}

---

In your CommonUtils.java

public class CommonUtils {
public static void displayPromptForEnablingGPS(
        final Activity activity)
{
    final AlertDialog.Builder builder =
            new AlertDialog.Builder(activity);
    final String action = Settings.ACTION_LOCATION_SOURCE_SETTINGS;
    final String message = "Enable either GPS or any other location"
            + " service to find current location.  Click OK to go to"
            + " location services settings to let you do so.";

    builder.setMessage(message)
            .setPositiveButton("OK",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface d, int id) {
                            activity.startActivity(new Intent(action));
                            d.dismiss();
                        }
                    })
            .setNegativeButton("Cancel",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface d, int id) {
                            d.cancel();
                        }
                    });
    builder.create().show();
}

}

In your activity

private void getGPSInfo() {

    LocationManager locationmanager = (LocationManager) getActivity()
            .getSystemService(Context.LOCATION_SERVICE);

    if (locationmanager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
    // YOUR MAPS ACTIVITY CALLING or WHAT YOU NEED

    } else {
        CommonUtils.displayPromptForEnablingGPS(getActivity());
    }
}