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POFile list error on load Android ListActivity
 

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  1. POFile list error on load Android ListActivity
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    <p>I got this error, and i dont know who is the problem. In some devices work de app but in other make this error.</p> <p>//THIS IS THE CODE</p> <pre><code>package com.neoadn.takerenamephoto; import java.io.File; import java.util.ArrayList; import java.util.List; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.app.AlertDialog; import android.app.ListActivity; import android.content.DialogInterface; import android.content.Intent; import android.view.View; import android.view.Window; import android.widget.AdapterView; import android.widget.AdapterView.OnItemLongClickListener; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.Toast; public class ListaFotos extends ListActivity { private File file, temp_file; private List&lt;String&gt; myList; String root_sd; File imagen; String direccionFile; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getListView().setBackgroundResource(R.drawable.fondo_p); myList = new ArrayList&lt;String&gt;(); root_sd = Environment.getExternalStorageDirectory().toString(); file = new File( root_sd + "/Pictures/TRPHOTO" ) ; File list[] = file.listFiles(); for( int i=0; i&lt; list.length; i++) { myList.add( list[i].getName() ); } setListAdapter(new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, myList )); </code></pre> <p>The line 41 is:</p> <pre><code> for( int i=0; i&lt; list.length; i++) </code></pre> <p>This shows a listactivity of files and folders into some folders.</p> <p><strong>UPDATED:</strong> </p> <p>Finally i used this to fix the problem: ( if list is not null, then load. If is null not load)</p> <pre><code> if(list != null) { for( int i=0; i&lt; list.length; i++) { // do your for loop } } </code></pre>
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    1. USJuan A. Doval
    1. USJuan A. Doval
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      1. VTDownMod
    1. CODo you even know when is the error coming..?
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      1. USNREZ
    2. COPost your code and check the line : com.neoadn.takerenamephoto.ListaFotos.onCreate(ListaFotos.java:41)
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      1. POFile list error on load Android ListActivity
      1. USTarun
    3. COit says right there in your log that you have a NullPointerException at Line 41 in your ListaFotos class. In Eclipse you can even double-click on that line and it will lead you straight to the problematic line
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      1. USavalancha
 

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