public void onDetach() {
    if (!mIsAttached) {
      return;
    }
    mIsAttached = false;
    for (int i = 0; i < mHolders.size(); ++i) {
      mHolders.get(i).onDetach();
    }
  }
Releases resources used to display the image.

<p>The containing view must call this method from both {@link View#onStartTemporaryDetach()}
and {@link View#onDetachedFromWindow()}.
drawee/src/main/java/com/facebook/drawee/view/MultiDraweeHolder.java