How can I get previous scene key in react-native-router-flux?

问题

I need to get a previous scene key in componentWillReceiveProps using react-native-router-flux to checkout what screen I come back from and make some action on condition. I looked through a lot but haven`t found an answer. Are there any ways to do that ?

来源：https://stackoverflow.com/questions/46919066/how-can-i-get-previous-scene-key-in-react-native-router-flux