How To Handle Navigation Between Dependent Activities

My question is how to update an activity based on its child while maintaining the context supplied by its parent. See the example hierarchy below. There is a flow up and down. Usi

Solution 1:

Have you considered using fragments and your home activity handling all the transaction and backstack with arguments and calls to fragment internal methods to update UI?

If you really like to use activities, then you should use start activity for result. You can pass result to calling-activity and update accordingly.

Getting a Result from an Activity