When moving to root path null pointer exception is raised

[Kyosfonica]

Is there a way to prevent the user from moving outside the /storage/emulated/0

On my app when I press up just launching the android folder picker library twice I get a null pointer exception because the app seems to fetch a non existing folder. I do not event press confirm, the exception is raised directly from the library activity

java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=0, data=Intent { cmp=com.XXXXX/lib.folderpicker.FolderPicker }} to activity {com.XXXXX/com.XXXXXXX.activities.CreateBackupActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference at android.app.ActivityThread.deliverResults(ActivityThread.java:4440)

[Kyosfonica]

My fault.

I implemented the activity result on the wrong activity.

Sorry.