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    <p>Check out this code - </p> <p>Extends ListActivity.</p> <pre><code>ArrayAdapter&lt;String&gt; adapter; int clickCounter=0; ArrayList&lt;String&gt; listItems=new ArrayList&lt;String&gt;(); private File[] imagelist; String[] pdflist; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); File images = Environment.getExternalStorageDirectory(); imagelist = images.listFiles(new FilenameFilter(){ public boolean accept(File dir, String name) { return ((name.endsWith(".pdf"))); } }); pdflist = new String[imagelist.length]; for(int i = 0;i&lt;imagelist.length;i++) { pdflist[i] = imagelist[i].getName(); } this.setListAdapter(new ArrayAdapter&lt;String&gt;(this,android.R.layout.simple_list_item_1, pdflist)); } @SuppressWarnings("rawtypes") @Override protected void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); PackageManager packageManager = getPackageManager(); Intent testIntent = new Intent(Intent.ACTION_VIEW); testIntent.setType("application/pdf"); List list = packageManager.queryIntentActivities(testIntent, PackageManager.MATCH_DEFAULT_ONLY); if (list.size() &gt; 0 &amp;&amp; imagelist[(int) id].isFile()) { Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); Uri uri = Uri.fromFile(imagelist[(int) id].getAbsoluteFile()); intent.setDataAndType(uri, "application/pdf"); startActivity(intent); } } </code></pre> <p>Main.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;ListView android:id="@+android:id/list" android:layout_width="fill_parent" android:layout_height="fill_parent" android:drawSelectorOnTop="false" /&gt; &lt;/LinearLayout&gt; </code></pre>
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    1. This table or related slice is empty.
    1. POHow to open the "**sdcard files in android**" and if i click the file it must open in emulator?
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    1. USPraveenkumar
    1. USPraveenkumar
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COi got the following error 12-28 11:42:43.345: E/AndroidRuntime(344): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example/com.example.Pdf}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
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      1. This table or related slice is empty.
    2. COCheck my updated answer.
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      1. USPraveenkumar
    3. COIs is working or not?
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      1. USPraveenkumar
 

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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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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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