Databases
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    <p>Yes you will get <code>NullPointerException</code> because you are trying to access view which doesn't exists.</p> <p><strong>View doesn't exists? Why?</strong></p> <p>why because ListView recycle the views for the performance reasons. So it will allocate memory for the visible items in the list. i.e for example if you list has 100 items and you can see 10 items at a time, then listview will allocate memory for 10 views only, Remain views will be allocated when they are visible i.e when you scroll listview to identify items.</p> <p><strong>What you need to do?</strong></p> <p>Keep track of each item and its visibility in ArrayList and then set visibility of selected item to VISIBLE and rest to gone</p> <p>Sorry I can't code for you, but I'll provide alternate simple solution for you </p> <p>Try this simple way</p> <p>Example:</p> <p>Take a View like this in your Activity</p> <pre><code>View v; </code></pre> <p>And initialize it in <code>onCreate</code></p> <pre><code>v=new View(); </code></pre> <p>and in your listview onItemClick</p> <pre><code>lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView&lt;?&gt; arg0, View view, int position, long arg3) { v.setVisibility(View.GONE); v=view; view.setVisibility(View.VISIBLE); } }); </code></pre> <p><strong>Edit:</strong></p> <p>Take a Variable in your Adapter like this</p> <pre><code> int visibility=View.VISIBLE; </code></pre> <p>And </p> <p>set the visibility of items in your to </p> <pre><code> view.setVisibility(visibility); </code></pre> <p>And then in the <code>onItemClick</code> do like this</p> <p>you can access your visibility field in Activity with Adapter instance so</p> <pre><code>adapter.visibility=View.GONE; adapter.notifyDataSetChanged(); view.setVisibility(View.VISIBLE); </code></pre> <p>// second parameter in onItemClick</p>
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    1. POHow to get the views of other items than clicked item in ListView OnItemClickListener?
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    1. USPragnani
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    1. COMay you please elaborate the way of doing this?
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    2. CO@NarendraDroidWorm check my edit for alternative
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    3. COMy requirement is to hide the views existing in list items, so, I need to hide each and every view corresponding to the list items position. How can I do that?
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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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