MediaMetadataRetriever.java on android unpublished API through Reflection

I'm interested in accessing this class:

https://android.googlesource.com/platform/frameworks/base/+/master/media/java/android/media/MediaMetadata开发者_如何学GoRetriever.java

It is android unpublished API but is it a problem if I access it through reflection or it could lead to issues ?

You can access it but there's no guarantee it will be in the next Android version. Unless you take steps to handle this, it could all end very badly.