Android: how to restore an object, onResume, and save it onPause?

Make the class (MyClass) implement Serializable you can then save it as a file when the activity is destroyed, and restore it from file when it's resumed.

Make the class (MyClass) implement Serializable, you can then save it as a file when the activity is destroyed, and restore it from file when it's resumed public boolean ObjectToFile(String fileName, Object obj){ boolean success = false; FileOutputStream fos = null; ObjectOutputStream out = null; try{ File dir = GetAppDir(); if(dir! = null){ fos = new FileOutputStream(dir + "/" + fileName); out = new ObjectOutputStream(fos); out. WriteObject(obj); out.close(); success = true; } }catch(Exception e){} return success; } public Object FileToObject(String fileName){ Object obj = null; try{ File dir = GetAppDir(); if(dir!

= null){ File f = new File(dir, fileName); if(f.exists() && f.isFile()){ FileInputStream fis = null; ObjectInputStream in = null; fis = new FileInputStream(f); in = new ObjectInputStream(fis); obj = in.readObject(); in.close(); } } }catch(Exception e){} return obj; }.

Mmmm it won't work for me, because myclass its running thread. And when I press the back button doesn't kill the activity. – daniel fari Jun 21 at 16:42 PLEASE, do not use Serialization on Android, its incredible slow.

Please use Parcelables instead. – cyngus Jun 25 at 1:25.

Essentially you can't (and shouldn't) do what you're trying to do. If you have code that you want to continue to execute after the user ends a session*, your code should be running in association with a Service. The code should then be writing its work to persistent storage or your Service should allow for some binding interface for the newly created Activity to connect with the Thread.

*A session ends if a user backs our of your Activities. This is a different behavior than the user pressing the HOME key, which indicates that the user wants to resume what they were doing when they return to your application.

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