Android，查看生命周期和恢复

Question

I has a view that is create by

this.vehicleListUI = new GameUIVehicleList();
this.vehicleListUI.attachGameEngine(myGameEngine);

This work fin unto the android destroy and restore the view. The Android can recreate the view by use the empty constructor, but my problem is for this GameUIVehicleList will work I most also have the myGameEngine object set to the GameUIVehicleList

The myGameEngine is not Serializable and can't be this to ( Is a part of UI )

Exist this a way to restore my View fully by reattach the myGameEngine object to a create view. This will also be good for enable a lot of "new GameUIVehicleList()" into a XML layout file.

EDIT:

I don't know if this is to some help but way I has this problem from begin is I use a android.support.v4.app.FragmentActivity and this keep to destroy and recreate my View object. I can also fix this by override some method in android.support.v4.app.FragmentActivity that is invoke while FragmentActivity is recreate/crate a fragment and for this set the need value from my Activity that hold the need data.

Answer 1

Destroying and re-creation of Activity (and views) usually happens on configuration change (most often screen orientation change). You may want to check if this article helps and onRetainNonconfigurationInstance() / setRetainInstance() would not be the cure for your problems.

Answer 2

If myGameEngine is not Serializable or Parcelable , I do not believe it is possible to do this reliably.

However if it is ok, for myGameEngine to sometimes not be recovered you can extend the Application class with your own custom MyApplication class which contains the variable myGameEngine then in your onCreate you can get the myGameEngine that saved in your application context.

MyApplication app = (MyApplication) this.getApplicationContext();
this.vehicleListUI.attachGameEngine(app.myGameEngine);