開啓GPS

/**
     * 打開GPS
     */
    public static void openGPSSettings(Context context) {
        LocationManager locationManager = (LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE);
        if (locationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
            Log.d(TAG, "已開啟GPS");
            return;
        } else {
            Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
            showToast(context, "請開啟GPS");
            context.startActivity(intent);
        }
    }