/**
   * Checks if storage is available for our use.
   *
   * @return true if storage is available and writeable
   */
  public static boolean isStorageAvailable() {
    boolean mExternalStorageAvailable;
    boolean mExternalStorageWriteable;
    String state = Environment.getExternalStorageState();

    if (Environment.MEDIA_MOUNTED.equals(state)) {
      // We can read and write the media
      mExternalStorageAvailable = mExternalStorageWriteable = true;
    } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
      // We can only read the media
      mExternalStorageAvailable = true;
      mExternalStorageWriteable = false;
    } else {
      // Something else is wrong. It may be one of many other states, but
      // all we need to know is we can neither read nor write
      mExternalStorageAvailable = mExternalStorageWriteable = false;
    }

    Ln.i(mExternalStorageAvailable ? "Storage available" : "Storage Unavailable");
    Ln.i(mExternalStorageWriteable ? "Storage writeable" : "Storage not writeable");

    return (mExternalStorageAvailable && mExternalStorageWriteable);
  }