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    <p>Have you tried <a href="http://developer.android.com/reference/android/app/FragmentManager.html#findFragmentByTag%28java.lang.String%29" rel="nofollow noreferrer"><code>FragmentManager.findFragmentByTag()</code></a></p> <pre><code>FragmentManager manager = getSupportedFragmentManager(); //with support package, else //FragmentManager manager = getFragmentManager() Fragment fragment = manager.findFragmentByTag("Tag You Created the Fragment"); if (fragment instanceof Fragment1){ Fragment1 fr = (Fragment1)fragment fr.updateData(DATA) //or any method of your choice } </code></pre> <p><strong>EDIT:</strong> I read carefully! The <code>instanceOf</code> will cast a <code>Fragment</code> into your Fragment class. It was you, who suggested <code>Fragment1</code> as a name for simpicity. Also, you didn't provide any source to help us. It is true, that you cannot set a <code>Fragment</code>'s tag, but why do you think you are able to get its tag? Usually a <code>Fragment</code> is added through <code>FragmentManagers</code> like </p> <pre><code>FragmentManager manager = getSupportedFragmnentManager() FragmentTransaction transaction = manager.beginTransaction(); transaction.add(int containerViewId, Fragment fragment, String tag); // or transaction.add(Fragment fragment, String tag) // ...other transactions transaction.commit() </code></pre> <p><strong>EDIT2:</strong> it's very easy though. according to your code you could just call</p> <pre><code>Fragment fragment = mAdapter.getItem(0) // 0||1||2 </code></pre> <p>You should consider reading the docs (i.e about <a href="http://developer.android.com/reference/android/support/v4/app/FragmentPagerAdapter.html#getItem%28int%29" rel="nofollow noreferrer">FragmenPagerAdapter</a>) and post your source code so we don't have to guess what you need.</p>
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    1. CODid you read my question carefully? I said, all fragments are instantiated from the same class! So obviously I cannot use "instanceof". Also, as far as I know, there is no "setTag()" method available on the fragment. So I might not be able to initialize a fragment using a tag! Any help is greatly appreciated!
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    2. COLook at the edit part! I still don't know what to do so any suggestion is hugely appreciated!
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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