Android: I have a list Fragment on an activity.based on the choice, another fragment will be shown on the same activity
but the other fragment should be replaced and i don't know how to do that when the list fragment is fixed !
From google guide for replacing fragments : http://developer.android.com/training/basics/fragments/fragment-ui.html
// Create fragment and give it an argument specifying the article it should show
ArticleFragment newFragment = new ArticleFragment();
Bundle args = new Bundle();
args.putInt(ArticleFragment.ARG_POSITION, position);
newFragment.setArguments(args);
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack so the user can navigate back
transaction.replace(R.id.fragment_container, newFragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();
There's a guide on Fragments in the developers portal. Take a look at the "programmatically add" part (and at the whole guide actually). In short: you need a ViewGroup that is used as a container for the fragments and a FragmentTransaction that is used to add/replace fragment in this container.
Something like (taken from the guide):
FragmentManager fragmentManager = getFragmentManager()
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
ExampleFragment fragment = new ExampleFragment();
fragmentTransaction.add(R.id.fragment_container, fragment);//fragment_container is the ID of the ViewGroup container in your layout
fragmentTransaction.commit();
in your activity.
EDIT:
Long story short - don't put a fixed fragment in your activity's layout. Instead place a container, dynamically add your first fragment in the container and replace it with another fragment when you need to do so (by using FragmentTransaction's replace).
Related
I have two fragments the first fragment contains list of linear layouts and the whole fragment is in scroll view the second fragment is added and the first is hidden on choosing item from the first.
The problem is the second fragment is created scrolled down if the first fragment was scrolled down.
I tried the ways to force second fragment to be scrolled to (0,0) but failed.
the code used to add the second fragment
public void setActionOnClick(String id) {
CommentFragment frag = new CommentFragment();
Bundle bundle = new Bundle();
bundle.putString("id", id);
bundle.putString("TAG", TAG_NEWS_STORY);
((MainActivity) getActivity()).setCurrentTag(TAG_NEWS_STORY);
frag.setArguments(bundle);
android.support.v4.app.FragmentTransaction fragmentTransaction =
getActivity().getSupportFragmentManager().beginTransaction();
fragmentTransaction.setCustomAnimations(android.R.anim.fade_in,
android.R.anim.fade_out);
fragmentTransaction.add(R.id.main_content, frag, TAG_NEWS_STORY);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
on Attach of second fragment the first fragment is hidden.
I don't want to use fragmentTransaction.replace because there are calls to the api which I don't want to reload.
this is an old question but. probably your fragment place_hoder is inside an scrollview.
just check if R.id.main_content is in a scrollview or not.
you should add the ScrollView to the fragment-layout instead of instantiating the fragment inside one
Before this:
android.support.v4.app.FragmentTransaction fragmentTransaction =
getActivity().getSupportFragmentManager().beginTransaction();
Add code to remove old fragment:
getSupportFragmentManager().beginTransaction().remove(yourOldFragment).commitAllowingStateLoss();
How to change the whole view of a fragment with other fragment !!
Or how to close the current fragment with another fragment, please explain with layout also
Thanks in advance...
You can either add or replace fragments in your activity. Create a FrameLayout in activity's layout xml file.
Then do this in your activity to replace fragment. You can use same code each time you want to replace one fragment with other.
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.add(R.id.container,YOUR_FRAGMENT_NAME,YOUR_FRAGMENT_STRING_TAG);
transaction.addToBackStack(null);
transaction.commit();
If you want to add fragment instead of replace then do this:
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.replace(R.id.container,YOUR_FRAGMENT_NAME,YOUR_FRAGMENT_STRING_TAG);
transaction.addToBackStack(null);
transaction.commit();
When you want to replace added frogment with anu other fragment then you have to remove previous fragment first (or you can hide previous fragment; depends on your requirement). See following code:
Fragment fragment = getSupportFragmentManager().findFragmentByTag(YOUR_FRAGMENT_STRING_TAG);
if(fragment != null)
getSupportFragmentManager().beginTransaction().remove(fragment).commit();
See following related questions on SO:
Difference between add(), replace(), and addToBackStack()
Basic difference between add() and replace() method of Fragment
Difference between add() & replace() with Fragment's lifecycle
Or see my answer to a similar question:
How to start Fragment from an Activity
getSupportFragmentManager().beginTransaction().replace(R.id.fragmentlayout,new fragment()).commit()
This will help you replace your existing fragment in view with id FragmentLayout with a new fragment().
ThankYou i hope this was helpful.
First you take one Framelayout in Your Activity where you add fragment.
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.add(R.id.framelayout,fragment_1);
transaction.addToBackStack(null);
transaction.commit();
When you replace first fragment with second one you write, just change fragment_1 to fragment_2
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.add(R.id.framelayout,fragment_2);
transaction.addToBackStack(null);
transaction.commit();
I am working on a navigation drawer and am currently using:
getSupportFragmentManager().beginTransaction().replace(R.id.mainfragment, f1).commit();
but as you can see that always replaces the main fragment with the new one. Thanks!
You can do beginTransaction().replace (container, newFragment, tag), where container is the id of a ViewGroup in an xml file. So the thing being replaced is whichever fragment is currently in the container.
final FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(getId(), new SearchVideoDownloadFragment(), "NewFragmentTag");
ft.commit();
I'm trying to refresh the content of 2 fragments in my activity after an update done in my DB.
I saw some answers telling to use hide/show or attach/detach but it doesn't work for me...maye be I'm doing something wrong...
Thanks for your help !
// Create fragment and give it an argument specifying the article it should show
ArticleFragment newFragment = new ArticleFragment();
Bundle args = new Bundle();
args.putInt(ArticleFragment.ARG_POSITION, position);
newFragment.setArguments(args);
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack so the user can navigate back
transaction.replace(R.id.fragment_container, newFragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();
taken from here: https://developer.android.com/training/basics/fragments/fragment-ui.html
How can I reset or reload a fragment container, to make it empty.
I have a master detail view and I want to reset the detail container to empty on a menu item click.This works in some cases and does not in some.
NullFragment fragment = new NullFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager
.beginTransaction();
fragmentTransaction.replace(R.id.item_detail_container,
fragment);
int count = fragmentManager.getBackStackEntryCount();
fragmentManager.popBackStackImmediate(count, 0);
fragmentTransaction.commit();
Usually you simply remove the fragment from it.
For example do something like
getFragmentManager().beginTransaction().remove(getFragmentManager().findFragmentById(R.id.your_container)).commit();
this will remove the fragment from the your_container holding it.
This gets the fragment currently present in your_container
getFragmentManager().findFragmentById(R.id.your_container)
and this remove the fragment
getFragmentManager().beginTransaction().remove(fragment).commit();
EDIT
Also sometimes it is useful to ensure all transactions are performed and finished, this can be done by using
getFragmentManager().executePendingTransactions();