android - FragmenManager replace makes overlay -


i'm using supportlib v4 reach master-detail flow.

problem: new instance of "details" fragment overlays first 1 (xml created) instead replace it.

my activity layout is:

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="horizontal"     tools:context=".tracklistactivity" >      <fragment         android:id="@+id/fragmentlist"         android:name="pl.com.digita.bikecomputerui.tracklist.tracklistfragment"         android:layout_width="0dp"         android:layout_height="match_parent"         android:layout_weight="1" />      <fragment         android:id="@+id/fragmenttrack"         android:name="pl.com.digita.bikecomputerui.tracklist.trackinfofragment"         android:layout_width="0dp"         android:layout_height="match_parent"         android:layout_weight="2" />  </linearlayout>

method called after click:

private void showdetails(long trackid){     view fragmentcontainer = getactivity().findviewbyid(r.id.fragmenttrack);     trackinfofragment trackinfofragment =  trackinfofragment.newinstance(trackid);     fragmentmanager fragmentmanager =  getfragmentmanager();     fragmentmanager.begintransaction().replace(fragmentcontainer.getid(), trackinfofragment).commit();      }

note: when add fragment activity layout defining fragment in layout xml file, cannot remove fragment @ runtime. if plan swap fragments in , out during user interaction, must add fragment activity when activity first starts, shown in next lesson.

which last thing on http://developer.android.com/training/basics/fragments/creating.html


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