title: java.lang.IllegalStateException: Can't change tag of fragment
body: <p>Hi i am getting this error while using a pageViwer and Adapter to slide across 3 fragments.</p>
  
  <p>here is my pageAdapter</p>
  
  <pre><code>public class FreedomPageAdapter extends FragmentPagerAdapter {
  
      private List&lt;Fragment&gt; listFragment;
  
  
      public FreedomPageAdapter(FragmentManager fm, List&lt;Fragment&gt; listFragment) {
  
          super(fm);
          this.listFragment = listFragment;
      }
  
      /*
       * (non-Javadoc)
       * 
       * @see android.support.v4.app.FragmentPagerAdapter#getItem(int)
       */
      @Override
      public Fragment getItem(int position) {
          // TODO Auto-generated method stub
          return listFragment.get(position);
      }
  
      /*
       * (non-Javadoc)
       * 
       * @see android.support.v4.view.PagerAdapter#getCount()
       */
      @Override
      public int getCount() {
          // TODO Auto-generated method stub
          return listFragment.size();
      }
  </code></pre>
  
  <p>here is how i define the pageview</p>
  
  <pre><code>viewPager = (ViewPager) findViewById(R.id.pager);
  
          viewPager.setOnPageChangeListener(this);
  
          savedListFragment = new SubscribedFragment();
  
          fragmentList.add(savedListFragment);
  
          fragmentList.add(savedListFragment);
  
          fragmentList.add(savedListFragment);
  
          viewPager.setAdapter(new FreedomPageAdapter(fragmentManager(),
                  fragmentList));
  
  
  
      private FragmentManager fragmentManager() {
          return getSupportFragmentManager();
      }
  
      private FragmentTransaction getFragmentTransaction() {
          return fragmentManager().beginTransaction();
      }
  </code></pre>
  
  <p>page view listener</p>
  
  <pre><code>/*
       * (non-Javadoc)
       * 
       * @see android.support.v4.view.ViewPager.OnPageChangeListener#
       * onPageScrollStateChanged(int)
       */
      @Override
      public void onPageScrollStateChanged(int arg0) {
  
      }
  
      /*
       * (non-Javadoc)
       * 
       * @see
       * android.support.v4.view.ViewPager.OnPageChangeListener#onPageScrolled
       * (int, float, int)
       */
      @Override
      public void onPageScrolled(int arg0, float arg1, int arg2) {
  
      }
  
      /*
       * (non-Javadoc)
       * 
       * @see
       * android.support.v4.view.ViewPager.OnPageChangeListener#onPageSelected
       * (int)
       */
      @Override
      public void onPageSelected(int position) {
          actionBar.setSelectedNavigationItem(position);
  
      }
  </code></pre>
  
  <p>Custom fragment object</p>
  
  <pre><code>   public class SubscribedFragment extends Fragment{
  
      /* (non-Javadoc)
       * @see android.app.Fragment#onCreate(android.os.Bundle)
       */
      @Override
      public void onCreate(Bundle savedInstanceState) {
          // TODO Auto-generated method stub
          super.onCreate(savedInstanceState);
  
      }
  
      /* (non-Javadoc)
       * @see android.app.Fragment#onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle)
       */
      @Override
      public View onCreateView(LayoutInflater inflater, ViewGroup container,
              Bundle savedInstanceState) {
          // TODO Auto-generated method stub
          return inflater.inflate(R.layout.discussion_list_layout, container);
      }
  
  }
  </code></pre>
  
  <p>Full stack trace of error:</p>
  
  <pre><code>    05-02 19:15:44.599: E/AndroidRuntime(19839): FATAL EXCEPTION: main
  05-02 19:15:44.599: E/AndroidRuntime(19839): java.lang.IllegalStateException: Can't change tag of fragment SubscribedFragment{41157420 id=0x7f070005 android:switcher:2131165189:0}: was android:switcher:2131165189:0 now android:switcher:2131165189:1
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.support.v4.app.BackStackRecord.doAddOp(BackStackRecord.java:398)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.support.v4.app.BackStackRecord.add(BackStackRecord.java:389)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.support.v4.app.FragmentPagerAdapter.instantiateItem(FragmentPagerAdapter.java:99)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:800)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.support.v4.view.ViewPager.populate(ViewPager.java:991)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.support.v4.view.ViewPager.populate(ViewPager.java:880)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1374)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.View.measure(View.java:15518)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.View.measure(View.java:15518)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:847)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.View.measure(View.java:15518)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2434)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.View.measure(View.java:15518)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.Choreographer.doCallbacks(Choreographer.java:562)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.Choreographer.doFrame(Choreographer.java:532)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.os.Handler.handleCallback(Handler.java:725)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.os.Handler.dispatchMessage(Handler.java:92)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.os.Looper.loop(Looper.java:137)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at android.app.ActivityThread.main(ActivityThread.java:5226)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at java.lang.reflect.Method.invokeNative(Native Method)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at java.lang.reflect.Method.invoke(Method.java:511)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
  05-02 19:15:44.599: E/AndroidRuntime(19839):    at dalvik.system.NativeStart.main(Native Method)
  </code></pre>