How to pass data between activities forward and backward, android, kotlin

Issue

Let's say my application has 4 activities (A -> B -> C -> D) when going forward, activity A pass a data value called category to activity B and then activity B pass category and also and data value called level and both used in activity D to get data from firebase realtime database. but when the user goes back to activity C and tries to go again to D data passed from A (category) is now null. so data can't retrieve from firebase. my question is how can I solve this situation.? "I pass data using Intent by putting extras." are there any other ways?

Solution

you could use startactivityforresult and set a result intent which includes the data you want to pass back https://developer.android.com/training/basics/intents/result

Answered By - Arno den Hond