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POHow to handle onContextItemSelected in a multi fragment activity?
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  1. POHow to handle onContextItemSelected in a multi fragment activity?
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    copied!<p>I'm currently trying to adapt my application to use the "Compatibility Libraries for Android v4" to provide the benefits of the usage of fragments even to Android 1.6 users.</p> <p>The implementation of a context menu seems to be tricky:</p> <ul> <li>The main activity of the application is extending the <strong>FragmentActivity</strong> class.</li> <li>The fragments are all based on one class which extends the Fragment class.</li> <li>The fragment class is calling <strong>registerForContextMenu()</strong> in its <strong>onCreateView()</strong> method and overrides the methods <strong>onCreateContextMenu()</strong> and <strong>onContextItemSelected()</strong>.</li> </ul> <p>For <strong>onCreateContextMenu()</strong> this works pretty well. The context menu is inflated from a resource file and slightly modified based on the selected item (which is based on a listView... even if the fragment is not an ListFragment).</p> <p>The problem occurs when a context menu entry is selected. <strong>onContextItemSelected()</strong> is called for all currently existing fragments starting with the first added one.</p> <p>In my case the fragments are used to show the content of a folder structure. When the context menu of a subfolder fragment is opened and a menu item is selected, <strong>onContextItemSelected()</strong> is first called on the upper levels (depending on how many fragments are allowed/visible in this moment).</p> <p>Right now, I use a workaround by a field on activity level which holds the tag of last fragment calling its <strong>onCreateContextMenu()</strong>. This way I can call "return super.onContextItemSelected(item)" in the begin of <strong>onContextItemSelected()</strong> when the stored tag is not the same as getTag(). But this approach looks a bit dirty to me.</p> <p>Why is onContextItemSelected() called on all fragments? and not just one the one that was calling <strong>onCreateContextMenu()</strong>?</p> <p>What is the most elegant way to handle this?</p>
 

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