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I'm trying to replace one fragment with another one using new navigation drawer pattern. It seems to work but when I choose another option from drawer the new fragment is loaded but both fragments are visible. I'm not using static fragment layout so I don't know where is the problem.
Fragments are loaded through onItemClick method implementing AdapterView.OnItemClickListener on my activity.
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Fragment fragmentToShow = null;
// Load desired fragment
switch (position) {
case 0: // Authors
if (fragmentAuthors == null) fragmentAuthors = new FragmentAuthors();
fragmentToShow = fragmentAuthors;
break;
case 1: // Books
if (fragmentBooks == null) fragmentBooks = new FragmentBooks();
fragmentToShow = fragmentBooks;
break;
}
FragmentTransaction ft = fragmentManager.beginTransaction();
ft.replace(R.id.ActivityMain_Drawer_FrameMain, fragmentToShow);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
mDrawerLayout.closeDrawers();
}
Layout
<!-- The main content view -->
<FrameLayout
android:id="@+id/ActivityMain_Drawer_FrameMain"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/background_light" />
<!-- The navigation drawer -->
<FrameLayout
android:id="@+id/ActivityMain_Drawer_FrameMenu"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@android:color/background_light">
<ListView
android:id="@+id/ActivityMain_Drawer_FrameMenu_List"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp" />
</FrameLayout>
Screenshots
https://dl.dropboxusercontent.com/u/1763308/Screenshots/device-2013-05-27-113128.png https://dl.dropboxusercontent.com/u/1763308/Screenshots/device-2013-05-27-113139.png
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To remove (so destroy) these fragments, you can call: You need to use findFragmentById for Fragment from XML file. And then find this in the MainActivity on click listener. I've added this to the OnClickListener but it always returns 'null' for the fragment I want to remove.
Calling setRetainInstance(true) will prevent the Fragment from being re-created.
Use replace() to replace an existing fragment in a container with an instance of a new fragment class that you provide. Calling replace() is equivalent to calling remove() with a fragment in a container and adding a new fragment to that same container. transaction. commit();
As Fragment is embedded inside an Activity, it will be killed when Activity is killed. As contents of activity are first killed, fragment will be destroyed just before activity gets destroyed.
I have same issue with some fragments. To solve it I simple set background color for all fragment layouts, for example:
android:background="?android:attr/colorBackground"
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