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Apps Create a new Activity or update view of existing activity?


Dec 24, 2012
I am very new to android development. I am working on developing an app and I am not sure when should I use a new activity and when should I update the existing view.

For example, lets say I have a view that shows a multiple choice question.Now, when the user selects his choices and clicks on say "Evaluate", I want to show the same question view but along with the right answers and explanations for each option. So does that mean, I should send an Intent upon a click on Evaluate or I should just update the view (i am not sure how)?

If I send an intent and show a new screen, how can the user go back to the next question without displaying the answers?
If I don't create an new activity, how can I update the existing view that is already displayed?

I guess I am just confused about the flow. Please pardon me if my question doesn't make any sense.

Thank you for your suggestion, jon.
Any pointers on how to update an existing view that is already being displayed? I come from Java Swing world where I can simply add/remove components from a container in the event thread and the view is updated automatically. Or I just update the model (such as for a JTable) and call fireTableDataChanged, which updates the view.

How does this work in Android app? As I understand the view is described in a hardcoded XML file, so how do I update it dynamically?

thank you!
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