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2014/10/16 ¤W¤È 08:10:27
android Programming Glossary: backstackhttp://stackoverflow.com/questions/10051962/fragment-design-adapting-to-multiple-screen-layouts-by-showing-hiding-fragments to handle back button presses Simply add to the Fragment backstack the transaction of showing hiding the details fragment. That.. the fragment transaction is reversed. You can also pop the backstack manually if you wish to do so on other button clicks. share..
Understanding Fragment's setRetainInstance(boolean) http://stackoverflow.com/questions/11182180/understanding-fragments-setretaininstanceboolean to the FragmentManager and the FragmentManager manages the backstack. That is no matter if you choose to retain your Fragment s or.. s or not the Activity and thus the FragmentManager 's backstack will be destroyed on a configuration change. Another reason.. non retained fragments were allowed to exist on the same backstack. Which are the use cases where it makes sense to use this method..
Public static variables and Android activity life cycle management http://stackoverflow.com/questions/12189476/public-static-variables-and-android-activity-life-cycle-management the Android OS can kill the activity at the rear of the backstack. So say for example I have an app and open the Main Activity..
Problems with Android Fragment back stack http://stackoverflow.com/questions/12529499/problems-with-android-fragment-back-stack got a massive problem with the way the android fragment backstack seems to work and would be most grateful for any help that is.. 1 add it to the view BUT Dont add the transaction to the backstack frag new Fragment1 transaction getSupportFragmentManager .beginTransaction.. the transaction that replaces the first fragment to the backstack frag new Fragment2 transaction getSupportFragmentManager .beginTransaction..
Android 4.2: back stack behaviour with nested fragments http://stackoverflow.com/questions/13418436/android-4-2-back-stack-behaviour-with-nested-fragments 0 Get the fragment fragment manager and pop the backstack mActivityDirectFragment.getChildFragmentManager .popBackStack..
how i can break things with Fragments with setRetainInstance(true) and adding them to backstack? http://stackoverflow.com/questions/13420448/how-i-can-break-things-with-fragments-with-setretaininstancetrue-and-adding-th Fragments with setRetainInstance true and adding them to backstack the docs on setRetainInstance say This can only be used with.. I run a method from parent Activity which adds frag B to backstack FragmentManager fm getSupportFragmentManager FragmentTransaction.. dont fire and all seems to work while fragments are in the backstack.. so why the docs say I shouldnt use it What are the scenarios..
Up navigation broken on JellyBean? http://stackoverflow.com/questions/14602283/up-navigation-broken-on-jellybean Pre API 16 I don't think it was possible to unwind the backstack in this fashion other than by using intent flags. Thus the FLAG_ACTIVITY_CLEAR_TOP..
Best place to addHeaderView in ListFragment http://stackoverflow.com/questions/5704478/best-place-to-addheaderview-in-listfragment gets called every time my Fragment comes back from the backstack and since I also set my adapter in onActivityCreated it fails...
Fragments onResume from back stack http://stackoverflow.com/questions/6503189/fragments-onresume-from-back-stack using fragments and adding transitions between them to the backstack I'd like to achieve the same behavior of onResume of an activity.. 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.. though It assumes you added all transactions to the backstack using FragmentTransaction.addToBackStack It will be activated..
http://stackoverflow.com/questions/6787071/android-fragment-how-to-save-states-of-views-in-a-fragment-when-another-fragmen of it In android a fragment say FragA gets added to the backstack and another fragment say FragB comes to the top. Now on hitting..
http://stackoverflow.com/questions/7230893/android-search-with-fragments attention to which Activitys are added removed to the backstack. See this post for some more information on how this might be..
http://stackoverflow.com/questions/10051962/fragment-design-adapting-to-multiple-screen-layouts-by-showing-hiding-fragments @SherifelKhatib in the comments there is a much cleaner way to handle back button presses Simply add to the Fragment backstack the transaction of showing hiding the details fragment. That way when you press the back button the fragment transaction..
Understanding Fragment's setRetainInstance(boolean) http://stackoverflow.com/questions/11182180/understanding-fragments-setretaininstanceboolean obvious reason to me is that the Activity holds a reference to the FragmentManager and the FragmentManager manages the backstack. That is no matter if you choose to retain your Fragment s or not the Activity and thus the FragmentManager 's backstack.. That is no matter if you choose to retain your Fragment s or not the Activity and thus the FragmentManager 's backstack will be destroyed on a configuration change. Another reason why it might not work is because things might get tricky if.. things might get tricky if both retained fragments and non retained fragments were allowed to exist on the same backstack. Which are the use cases where it makes sense to use this method Retained fragments can be quite useful for propagating..
Public static variables and Android activity life cycle management http://stackoverflow.com/questions/12189476/public-static-variables-and-android-activity-life-cycle-management activity life cycle management According to the documentation the Android OS can kill the activity at the rear of the backstack. So say for example I have an app and open the Main Activity let's call it Activity A . In this public activity class I..
Problems with Android Fragment back stack http://stackoverflow.com/questions/12529499/problems-with-android-fragment-back-stack with Android Fragment back stack I've got a massive problem with the way the android fragment backstack seems to work and would be most grateful for any help that is offered. Imagine you have 3 Fragments 1 2 3 I want the user.. FragmentTransaction transaction Create The first fragment 1 add it to the view BUT Dont add the transaction to the backstack frag new Fragment1 transaction getSupportFragmentManager .beginTransaction transaction.replace R.id.detailFragment frag.. Create the second 2 fragment add it to the view and add the transaction that replaces the first fragment to the backstack frag new Fragment2 transaction getSupportFragmentManager .beginTransaction transaction.replace R.id.detailFragment frag..
Android 4.2: back stack behaviour with nested fragments http://stackoverflow.com/questions/13418436/android-4-2-back-stack-behaviour-with-nested-fragments .getBackStackEntryCount 0 Get the fragment fragment manager and pop the backstack mActivityDirectFragment.getChildFragmentManager .popBackStack Else nothing in the direct fragment back stack else Let super..
how i can break things with Fragments with setRetainInstance(true) and adding them to backstack? http://stackoverflow.com/questions/13420448/how-i-can-break-things-with-fragments-with-setretaininstancetrue-and-adding-th i can break things with Fragments with setRetainInstance true and adding them to backstack the docs on setRetainInstance say This can only be used with fragments not in the back stack. so I started playing with.. new PackageFragment ft.commit then from this frag I run a method from parent Activity which adds frag B to backstack FragmentManager fm getSupportFragmentManager FragmentTransaction ft fm.beginTransaction ft.replace R.id.content new OrderFragment.. Everything is as expected . onCreate onDestroy on fragments dont fire and all seems to work while fragments are in the backstack.. so why the docs say I shouldnt use it What are the scenarios where I might get in trouble thanks android android fragments..
Up navigation broken on JellyBean? http://stackoverflow.com/questions/14602283/up-navigation-broken-on-jellybean and can do things that are not possible through the API. Pre API 16 I don't think it was possible to unwind the backstack in this fashion other than by using intent flags. Thus the FLAG_ACTIVITY_CLEAR_TOP flag is the closest approximation of..
Best place to addHeaderView in ListFragment http://stackoverflow.com/questions/5704478/best-place-to-addheaderview-in-listfragment adapter. I tried adding my header in onActivityCreated but that gets called every time my Fragment comes back from the backstack and since I also set my adapter in onActivityCreated it fails. I tried adding it in onCreate but the view hierarchy isn't..
Fragments onResume from back stack http://stackoverflow.com/questions/6503189/fragments-onresume-from-back-stack 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.. 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.. will be called after a Back is pressed. few caveats though It assumes you added all transactions to the backstack using FragmentTransaction.addToBackStack It will be activated upon each stack change you can store other stuff in the back..
http://stackoverflow.com/questions/6787071/android-fragment-how-to-save-states-of-views-in-a-fragment-when-another-fragmen of views in a fragment when another fragment is pushed on top of it In android a fragment say FragA gets added to the backstack and another fragment say FragB comes to the top. Now on hitting back FragA comes to the top and the onCreateView is called...
http://stackoverflow.com/questions/7230893/android-search-with-fragments do. p.s. If you use this approach you might have to pay special attention to which Activitys are added removed to the backstack. See this post for some more information on how this might be done. p.p.s. You might also forget about the standard search..
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