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2014/10/16 ¤W¤È 08:22:48
android Programming Glossary: retainedUnderstanding Fragment's setRetainInstance(boolean) http://stackoverflow.com/questions/11182180/understanding-fragments-setretaininstanceboolean boolean retain Control whether a fragment instance is retained across Activity re creation such as from a configuration change.. this be recreated on configuration change what exactly is retained Will the fragment be destroyed when the user leaves the activity.. improve this question First of all check out my post on retained Fragments. It might help. Now to answer your questions... Does..
Further understanding setRetainInstance(true) http://stackoverflow.com/questions/12640316/further-understanding-setretaininstancetrue showing UI that will be updated from work done in the retained fragment. public static class UiFragment extends Fragment RetainedFragment.. fm getFragmentManager Check to see if we have retained the worker fragment. mWorkFragment RetainedFragment fm.findFragmentByTag.. RetainedFragment fm.findFragmentByTag work If not retained or first time running we need to create it. if mWorkFragment..
How can I refresh MediaStore on Android? http://stackoverflow.com/questions/3300137/how-can-i-refresh-mediastore-on-android cursor.getString 2 id i cursor.close publish list of retained deleted playlists ListAdapter adapter new ArrayAdapter String..
How to save state during orientation change in Android if the state is made of my classes? http://stackoverflow.com/questions/3915952/how-to-save-state-during-orientation-change-in-android-if-the-state-is-made-of-m versions of Android and with the compatibility library retained fragments are usually the best way to handle keeping expensive..
Concise way of writing new DialogPreference classes? http://stackoverflow.com/questions/4505845/concise-way-of-writing-new-dialogpreference-classes are needed so that the current changes to the dialog are retained on orientation changes are quite verbose and complex. Does anyone..
How to store hashmap so that it can be retained it value after a device reboot? http://stackoverflow.com/questions/4953466/how-to-store-hashmap-so-that-it-can-be-retained-it-value-after-a-device-reboot to store hashmap so that it can be retained it value after a device reboot I want to store the hashmap..
Activity restarts on Force Close http://stackoverflow.com/questions/6121300/activity-restarts-on-force-close only guess would have been some form of quirk relating to retained references to some part of the Activity only I don't have any..
Fragments, DialogFragment, and Screen Rotation http://stackoverflow.com/questions/8235080/fragments-dialogfragment-and-screen-rotation I also suggest setting your dialogfragment as retained so it won't get dismissed after the rotation. Put setRetainInstance..
http://stackoverflow.com/questions/8267928/android-rest-client-sample configuration changes for you. The original answer is retained below for reference. But please also take the time to examine..
Android Fragments. Retaining an AsyncTask during screen rotation or configuration change http://stackoverflow.com/questions/8417885/android-fragments-retaining-an-asynctask-during-screen-rotation-or-configuratio boolean to have your fragment instance retained across configuration changes. Note that this is the recommended.. docs. If for some reason you really don't want to use a retained fragment there are other approaches you can take. Note that..
When a Fragment is replaced and put in the back stack (or removed) does it stay in memory? http://stackoverflow.com/questions/8482606/when-a-fragment-is-replaced-and-put-in-the-back-stack-or-removed-does-it-stay are re created every time activity gets re created with retained state. Hope this helps. PS So in short Yes you can run out of..
Understanding Fragment's setRetainInstance(boolean) http://stackoverflow.com/questions/11182180/understanding-fragments-setretaininstanceboolean Starting with the documentation public void setRetainInstance boolean retain Control whether a fragment instance is retained across Activity re creation such as from a configuration change . This can only be used with fragments not in the back stack... questions Does the fragment also retain it's view or will this be recreated on configuration change what exactly is retained Will the fragment be destroyed when the user leaves the activity Why doesn't it work with fragments on the back stack Which.. it makes sense to use this method android fragment share improve this question First of all check out my post on retained Fragments. It might help. Now to answer your questions... Does the fragment also retain its view state or will this be recreated..
Further understanding setRetainInstance(true) http://stackoverflow.com/questions/12640316/further-understanding-setretaininstancetrue new UiFragment .commit This is a fragment showing UI that will be updated from work done in the retained fragment. public static class UiFragment extends Fragment RetainedFragment mWorkFragment @Override public View onCreateView.. super.onActivityCreated savedInstanceState FragmentManager fm getFragmentManager Check to see if we have retained the worker fragment. mWorkFragment RetainedFragment fm.findFragmentByTag work If not retained or first time running we.. Check to see if we have retained the worker fragment. mWorkFragment RetainedFragment fm.findFragmentByTag work If not retained or first time running we need to create it. if mWorkFragment null mWorkFragment new RetainedFragment Tell it who it is..
How can I refresh MediaStore on Android? http://stackoverflow.com/questions/3300137/how-can-i-refresh-mediastore-on-android i getContentResolver .delete uri null null list.add Deleted cursor.getString 2 id i cursor.close publish list of retained deleted playlists ListAdapter adapter new ArrayAdapter String this android.R.layout.simple_list_item_1 list return adapter..
How to save state during orientation change in Android if the state is made of my classes? http://stackoverflow.com/questions/3915952/how-to-save-state-during-orientation-change-in-android-if-the-state-is-made-of-m state android share improve this question EDIT On newer versions of Android and with the compatibility library retained fragments are usually the best way to handle keeping expensive to recreate data alive across activity destruction creation...
Concise way of writing new DialogPreference classes? http://stackoverflow.com/questions/4505845/concise-way-of-writing-new-dialogpreference-classes RestoreInstanceState methods and class SavedState parts which are needed so that the current changes to the dialog are retained on orientation changes are quite verbose and complex. Does anyone have any tips for writing DialogPreference classes in..
How to store hashmap so that it can be retained it value after a device reboot? http://stackoverflow.com/questions/4953466/how-to-store-hashmap-so-that-it-can-be-retained-it-value-after-a-device-reboot to store hashmap so that it can be retained it value after a device reboot I want to store the hashmap object in global class so that it will store value even after..
Activity restarts on Force Close http://stackoverflow.com/questions/6121300/activity-restarts-on-force-close to force close' option they both result in the same. My only guess would have been some form of quirk relating to retained references to some part of the Activity only I don't have any outside of some WeakReference entries at the Application level...
Fragments, DialogFragment, and Screen Rotation http://stackoverflow.com/questions/8235080/fragments-dialogfragment-and-screen-rotation getDialog .setOnDismissListener null super.onDestroyView I also suggest setting your dialogfragment as retained so it won't get dismissed after the rotation. Put setRetainInstance true e.g. in the onCreate method. share improve this..
http://stackoverflow.com/questions/8267928/android-rest-client-sample for you. More importantly some of these libraries handle device configuration changes for you. The original answer is retained below for reference. But please also take the time to examine some of the Rest client libraries for Android to see if they..
Android Fragments. Retaining an AsyncTask during screen rotation or configuration change http://stackoverflow.com/questions/8417885/android-fragments-retaining-an-asynctask-during-screen-rotation-or-configuratio actually make this a lot easier. Just use the method Fragment.setRetainInstance boolean to have your fragment instance retained across configuration changes. Note that this is the recommended replacement for Activity.onRetainnonConfigurationInstance.. for Activity.onRetainnonConfigurationInstance in the docs. If for some reason you really don't want to use a retained fragment there are other approaches you can take. Note that each fragment has a unique identifier returned by Fragment.getId..
When a Fragment is replaced and put in the back stack (or removed) does it stay in memory? http://stackoverflow.com/questions/8482606/when-a-fragment-is-replaced-and-put-in-the-back-stack-or-removed-does-it-stay objects i.e. actual fragments in the back stack are re created every time activity gets re created with retained state. Hope this helps. PS So in short Yes you can run out of memory by adding Fragments to back stack as well as by adding..
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