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    <p>Usually, when you need to obtain data from views inside a ListView (or a GridView), it is not quite as simple as iterating over these views, and accessing their properties: for example, checked state of a CheckBox, selected option in a RadioGroup, and in your case, user's input in an EditText. The reason why this isn't simple: ListViews serve Views on demand. </p> <p>Say you have a ListView which has 20 items to show. Given a certain screen size, it can probably display 8 items, and you need to scroll to access the rest. If at this point, you try to access all 20 Views, you will most certainly run into a <code>NPE</code>: because all 20 Views simply don't exist. On scroll, older views (those that are not on screen anymore) are recycled and/or new views are created. </p> <blockquote> <p>I think I shoud add some code in the function public Object getItem(int arg0)... but I don't know how to do</p> </blockquote> <p>This method's purpose is to serve data to the BaseAdapter. Its <em>mostly</em> used in the getView(...) method to return an Object using the <code>position</code> argument. Method's body, in your case, will look like this:</p> <pre><code>@Override public Object getItem(int arg0) { return mListNumber.get(arg0); } </code></pre> <p>Its usage:</p> <pre><code>@Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { .... } else { .... } String currentItem = (String) getItem(position); // use 'currentItem' } </code></pre> <p><strong>Solution:</strong></p> <p>Maintain data yourself. </p> <p>Create an <code>ArrayList&lt;String&gt;</code> inside your BaseAdapter:</p> <pre><code>public class ListNumberAdapter extends BaseAdapter { private LayoutInflater mInflater; private List&lt;String&gt; mListNumber; private Context mContext; // List private ArrayList&lt;String&gt; mListData; public ListNumberAdapter(Context context, List&lt;String&gt; listNumber){ mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); mListNumber=listNumber; mContext=context; // Create and initialize the list mListData = new ArrayList&lt;String&gt;(); for (int i = 0; i &lt; mListNumber.size(); i++) { mListData.add(""); } } .... @Override public View getView(final int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { .... } else { .... } .... // Update 'mListData' whenever EditText's content changes holder.editNumber.addTextChangedListener(new TextWatcher() { public void beforeTextChanged(CharSequence s, int start, int count, int after) {} public void onTextChanged(CharSequence s, int start, int before, int count) {} public void afterTextChanged(Editable s) { // Text has changed mListData.set(position, s.toString()) } }); return convertView; } // Use this method to obtain 'mListData' public ArrayList&lt;String&gt; getCurrentEditTextContent() { return mListData; } } </code></pre> <p>So, from your activity, you would obtain the data using:</p> <pre><code>ArrayList&lt;String&gt; currentContent = yourAdapter.getCurrentEditTextContent(); </code></pre> <p>By the way, you will also have to change <code>holder.btnDelete's</code> OnClickListener: when you remove an object from <code>mListNumber</code>, do the same operation for <code>mListData</code> to maintain consistency. </p>
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    1. POHow can I get the text of EditText control when I use customize BaseAdapter?
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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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