fix: fix `MissingPluginException` for opening file when add to app
@joker-fu Could you please add some description and more context to your pull request? I'm not sure how to reproduce your issue
open_filex throw MissingPluginException when I add a flutter module to app, because the plugin sets channel to null when flutter calls the onDetachedFromActivity method. ( base on flutter boost testing )
Great!
@joker-fu A new version including your fix is now published to the pub.dev Sorry for the delay, I've been busy last year and couldn't make it Thanks for your efforts on this PR