/** 衝突イベントの検知を終了する. */
  public void stopCollision() {
    if (!mIsCollisionStarted) {
      return;
    }

    mIsCollisionStarted = false;
    mCollisionListener = null;
    mDevice.getCollisionControl().removeCollisionListener(this);
    mDevice.getCollisionControl().stopDetection();

    if (BuildConfig.DEBUG) {
      Log.d("", "stop collision");
    }
  }
  /**
   * 衝突の監視を開始する.
   *
   * @param listener リスナー
   */
  public void startCollistion(final DeviceCollisionListener listener) {

    if (mIsCollisionStarted) {
      return;
    }

    if (BuildConfig.DEBUG) {
      Log.d("", "start collision");
    }

    mIsCollisionStarted = true;
    mCollisionListener = listener;
    mDevice.getCollisionControl().addCollisionListener(this);
    mDevice.getCollisionControl().startDetection(90, 90, 130, 130, 100);
  }