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Reuseable activties?

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By User



Hi i have a couple of question regaurding android and activites, i have tried looking online but can't seem to find what i am looking for, anyway;





Say i have a menu activity with an option to create new "drawactivity", when user selects this an activity is presented with a toolbar on the top the lower enables the user to draw, then the user will save this activity and quit, when the user returns to the menu, the last activity the user was on is avaiable to load and the create new option is also avaible.





So here are my questions;





  1. How is it possible to load an activty with a predefined layout and fuctions/code ready? and reuse it?



  2. Save this activity



  3. Load this activity







If you have any resources or anything to point me in the right direction it would be greatly appreciated.





Many thanks.


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