android - Fragment is added to activity and fragments oncreateview is called but view is not being inflated? -


i have activity extends appcompatactivity , i'm adding fragment in framelayout inside activity.the fragments oncreateview being called fragments view not being inflated or shown.

appcompat activity's layout:

<framelayout 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:background="#fff" >          <framelayout             android:layout_width="match_parent"         android:layout_height="match_parent"         android:id="@+id/contain">         </framelayout> </framelayout> 

i'm adding fragment child framelayout.the code attach fragment below:

onefragment m = new onefragment();                android.support.v4.app.fragmentmanager fm = getsupportfragmentmanager();             android.support.v4.app.fragmenttransaction ft = fm.begintransaction();             ft.add(r.id.contain,m);             ft.addtobackstack(null);             ft.commit(); 

this code inside oncreateview of onefragment:

view view = inflater.inflate(r.layout.fragment_one, container, false);          //find +1 button         mplusonebutton = (plusonebutton) view.findviewbyid(r.id.plus_one_button);          return view; 

fragment_one.xml:

<framelayout 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"     tools:context=".onefragment">      <com.google.android.gms.plus.plusonebutton         xmlns:plus="http://schemas.android.com/apk/lib/com.google.android.gms.plus"         android:id="@+id/plus_one_button"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         plus:size="standard"         plus:annotation="inline" />      <button         android:layout_width="match_parent"         android:layout_height="wrap_content" />  </framelayout> 


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