Use bridge without icepick like state handler libraries

[asozcan]

I'm trying to apply this library without any other state handler library. Is there any workaround to implement it compatible with old style savedInstanceState methods when initializing it? Something like;

    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        Bridge.saveInstanceState(this, outState);
        outState.putParcelable("hugeObject", hugeObject);
    }

As i test, it causes TransactionTooLarge in any case, if there's no @State annotation for objects. Icepick is super nice but i have almost 200 unique activity in my project and lazy to overhaul all :)

[byencho]

To use Bridge without an annotation-based library, one way would be to make a new interface like

public interface StateManager {

    void restoreState(@Nullable Bundle bundle);    

    void saveState(@NonNull Bundle bundle);

}

and make your Activities and Fragments implement that and do your actually save-state handling there:

public class MainActivity extends Activity implements StateManager {

   ...

   @Override
   protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        Bridge.saveInstanceState(this, outState);
   }

   @Override
   public void saveState(@NonNull Bundle bundle) {
       bundle.putParcelable("hugeObject", hugeObject);
   }

   ...   

}

Then your Bridge initialization would look like:

Bridge.initialize(getApplicationContext(), new SavedStateHandler() {
    @Override
    public void saveInstanceState(@NonNull Object target, @NonNull Bundle state) {
        if (target instanceof StateManager) {
            ((StateManager) target).saveState(state);
        }
    }

    @Override
    public void restoreInstanceState(@NonNull Object target, @Nullable Bundle state) {
        if (target instanceof StateManager) {
            ((StateManager) target).restoreState(state);
        }
    }
});

Something like that should work if you really want to go that route. But personally I think it's just much easier at that point to switch to using a library like Icepick.

[asozcan]

Hmm, it worked as expected but in any case i have to implement a custom StateManager interface for all old style activities. Better to give same effort for icepick, thank you so much @byencho .