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I’ve got a ListFragment with this:
public void fragmentSelection(Integer count) {
Fragment fr;
if (count == 0) {
fr = new Fragment1();
} else {
fr = new Fragment2();
}
FragmentManager fm = getFragmentManager();
FragmentTransaction fragmentTransaction = fm.beginTransaction();
fragmentTransaction.replace(R.id.content, fr, fr.getClass().getName());
fragmentTransaction.commit();
}
here I am trying to replace the fragment content with fr (depends on count value)..
the part from XML looks like this
<fragment android:id="@+id/content" android:name="com.test.app.DefaultContent" android:layout_width="match_parent" android:layout_height="match_parent"> </fragment>
Now when I want to replace fragment “content” with “fr” it do not replace it 1:1 – it adds fr down to the already current fragment (here DefaultContent) – so – why it does not replace it? What I have to do, that it replaces it and not puts the fr in addition below the current fragment
Answer
The View ID you pass to replace(), in your case R.id.content, has to be the ID of the Fragment’s parent View, not the original Fragment itself.
That means you have to set android:id="@+id/content" to the Fragment’s parent, like this:
<FragmentLayout
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:name="com.test.app.DefaultContent"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FragmentLayout>
Or, if that does not work for you, set a new ID to the parent and use it for replace().