back-stack

I have an activity A, which calls fragment Bf, which calls fragment Cf. I want Bf to be placed in the backstack when Cf is called so that users can navigate back to it. However, if a specific button is pressed in Cf, I would like Bf to be removed from the backstack. Is this possible? I see that there is a popBackStack() function. However, I am a little confused on how this would work. Is it safe to use this function? Is there any possibility that an activity from a different application would be inserted after Bf on the backstack? Also, is there any way to alter the savedInstanceState of the

How can I get the latest fragment instance added in backstack (if I do not know the fragment tag & id)? FragmentManager fragManager = activity.getSupportFragmentManager(); FragmentTransaction fragTransacion = fragMgr.beginTransaction(); /****After add , replace fragments (some of the fragments are add to backstack , some are not)***/ //HERE, How can I get the latest added fragment from backstack ?? Deepak Goel You can use the getName() method of FragmentManager.BackStackEntry which was introduced in API level 14. This method will return a tag which was the one you used when you added the

I have an Activity in which I go through several fragments. In every fragment I have several views ( EditText, ListView, Map , etc). How can I save the instance of the fragment that is shown at that moment? I need it to work when the activity is onPause() --> onResume() . Also I need it to work when I return from another fragment (pop from backstack). From the main Activity I call the first fragment, then from the the fragment I call the next one. Code for my Activity: public class Activity_Main extends FragmentActivity{ public static Fragment_1 fragment_1; public static Fragment_2 fragment_2;

When i am clicking on Logout button in my Profile Activity i want to take user to Login page, where he needs to use new credentials. Hence i used this code: Intent intent = new Intent(ProfileActivity.this, LoginActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); in the onButtonClick of the Logout button. But the problem is when i click device back button on the Login Activity it takes me to the ProfileActivity. I was expecting the application should close when i press device back button on LoginActivity. What

I'm using the compatibility package to use Fragments with Android 2.2. When using fragments, and adding transitions between them to the backstack, I'd like to achieve the same behavior of onResume of an activity, i.e., whenever a fragment is brought to "foreground" (visible to the user) after poping out of the backstack, I'd like some kind of callback to be activated within the fragment (to perform certain changes on a shared UI resource, for instance). I saw that there is no built in callback within the fragment framework. is there s a good practice in order to achieve this? oriharel For a