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POHow do I restore a previously displayed Fragment?
 

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  1. POHow do I restore a previously displayed Fragment?
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    <p>I'm using the compatibility package v4 in my project and I'm having an issue with keeping a <code>Fragment</code> around after it's removed from view. I have my <code>Activity</code> displaying 2 fragments...a menu frame on the left, content pane on the right. The menu frame has 3 different menus (Fragments) that can be displayed.</p> <p>This is how I'm replacing the menu Fragment:</p> <pre><code>public void showMenuFragment( Fragment fragment, String tag ) { showFragment( R.id.menu_frame, fragment, tag, false); setLastMenuPushed( tag ); } protected void showFragment( int resId, Fragment fragment, String tag, boolean addToBackStack ) { FragmentManager fragmentManager = getSupportFragmentManager(); FragmentTransaction transaction = fragmentManager.beginTransaction(); if ( fragmentManager.findFragmentByTag( tag ) != null &amp;&amp; fragment.isAdded() ) { transaction.remove( fragment ); } transaction.replace( resId, fragment, tag ).setTransition( FragmentTransaction.TRANSIT_FRAGMENT_OPEN ).setBreadCrumbShortTitle( tag ); if ( addToBackStack ) { transaction.addToBackStack( tag ); } transaction.commit(); } </code></pre> <p>The menu <code>Fragment</code>s require data to be loaded before it can be displayed, so I show a loading spinner. Once it's loaded the first time, I want to not have to ever load it a second time unless the <code>Activity</code> is finished.</p> <p>When I call <code>showMenuFragment(...)</code> I try to pass in a <code>Fragment</code> using <code>FragmentManager.findFragmentByTag(String tag)</code> but it's always <code>null</code>, so I have to make a new <code>Fragment</code> every time I want to show a different menu.</p> <p>My question is, how do I keep these <code>Fragment</code>s around after they are replaced by other menus? I want to avoid keeping manual references to the <code>Fragment</code>s because when the device is rotated, the instance of my <code>Activity</code> class is destroyed and I would lose those references.</p> <p>EDIT: To put in much simpler terms, I want the <code>FragmentManager</code> to keep track of previous <code>Fragment</code>s without having to add them to the back stack. I don't want to hit the back button and see the previous menu shown.</p>
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