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A comment on Introducing Android 9 Pie. Parent comment

Re:Introducing Android 9 Pie by joshuamorton on Monday August 06, 2018 @02:37PM (#17700281)
The back button is now contextual, it appears in apps, but disappears when it can't do anything.
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Re:Introducing Android 9 Pie by ptx on Monday August 06, 2018 @04:51PM (#17701680)
What about when an activity in app A opens an activity in app B? Can I still go back to app A's activity from app B's activity?
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Re:Introducing Android 9 Pie by joshuamorton on Monday August 06, 2018 @05:03PM (#17701770)
I just tested this (I think):

I opened a link from fb messenger in chrome. The back button is still there, and clicking it returned me to messenger. So yes I believe so.

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