This weekend’s changes to the Android MVC project include the following:
- Reorganization of the Command classes. AbstractBaseCommand has been created for simple get/set. All methods except “
execute
” have been implemented. This class now forms the base forIdentityCommand
as well asAbstractCommand
. Controller
now has full support for forward as well as backward navigation.Controller
can now record the activity navigation. UsesActivityStackInfo
.Controller
now support forward navigation with few more options:- Can optionally mark the command to not be recorded
- Can optionally reset the activity stack
Controller
now hasback
method for backward navigation.Controller
, during forward navigation, manipulates the activity stack appropriately.- Missing part is handling failure scenario when receiving a response. When processing the response, if it is in “error” state, IMHO, the response must be handled by the same activity rather than launching a new one.
- More so, the command must be removed from the top of the stack if there was an error.
- The support for
IMemento
,IInitializable
has been removed. Not required. - The initialize method, henceforth, has been removed from
BaseActivity
. BaseActivity
now has two methodspreProcessData
andprocessData
called beforeonBeforeCreate
and beforeonCreateContent
respectively.BaseActivity
now handles the back button (using the v2.0 functiononBackPressed
) by calling the back method for navigation.- Developers using v1.6 can override the method
onKeyPressed
and look for theKeyEvent.KEYCODE_BACK
and call the methodback
.
- Developers using v1.6 can override the method
Sample case study (showcase) now comprises of the following:
- SplashActivity that happens to be the main launcher activity.
- Erstwhile MainActivity has been renamed to LoginActivity to reflect its purpose.
- HomeActivitiy continues to be the same.
- SplashActivity launches LoginActivity using IdentityCommand and sharing some data (using Tag)
- LoginActivity launches HomeActivity upon successful login (sharing some data using Tag and passing some piece of data to LoginCommand using Data).
The code is, as usual, available on Sourceforge at http://android-mvc.git.sourceforge.net/git/gitweb.cgi?p=android-mvc/android-mvc;a=tree. Additionally, I’ve also pushed the codebase on Github at http://github.com/gvaish/Android-MVC.