From Fragments to Activity: the Lambda Way

Activities have their lifecycle, and the same goes forFragments. Hence, communication from Fragments to Activities is notoriously problematic.The communication between Fragments and Activities cannot be as simple as passing a listener to the fragment that the activity could implement: the Activity would soon rotate and the Fragment would keep a reference to an Activity that had died and would leak. Google recommends a “good old pattern” to achieve this goal and limit the risk of leaks. In this a...

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