안드로이드 GPS상태 체크후 설정화면 바로가기

@Override
    public void onCreate(Bundle savedInstanceState) {
        ...
        String context = Context.LOCATION_SERVICE;
        locationManager = (LocationManager)getSystemService(context);
        if(!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            alertCheckGPS();
      }
        ...
    }

    private void alertCheckGPS() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage("Your GPS is disabled! Would you like to enable it?")
                .setCancelable(false)
                .setPositiveButton("Enable GPS",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                moveConfigGPS();
                            }
                    })
                .setNegativeButton("Do nothing",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                dialog.cancel();
                            }
                    });
        AlertDialog alert = builder.create();
        alert.show();
    }

    // GPS 설정화면으로 이동
    private void moveConfigGPS() {
        Intent gpsOptionsIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
        startActivity(gpsOptionsIntent);
    }


출처 : http://www.androes.com/79