Android Question Releasing Memory when Activity finishes

[Gary Milne]

I'm capturing the user press of the Back key and doing an Activity.Finish. My understanding is that this should release all of the resources, ie screens, layouts, views and anything defined as global that are associated with that Activity. Is this a correct assumption or should I explicitly do an Activity.RemoveAllViews first, and then call Activity.Finish?

Is there anything else I should explicitly be doing to free up resources?

If a "memory leak" existed within an Activity would these steps release that memory?

Thanks for any answers.

 

[Erel]

Normally you don't need to call Activity.RemoveAllViews. The activity will be released with all the views. Unless there is another live reference to the activity or the views.

 

[Gary Milne]

Can you give an example of how can one Activity can have a live reference to a view in another activity? I don't see how that situation arises.

 

[Erel]

The compiler tries to protect against such cases. However there are ways to pass a reference of a view from one activity to another. For example if you use CallSubDelayed2 and pass the view as a parameter.

 

[Gary Milne]

Yes, of course. That makes perfect sense. Thanks for the clarification.