Android mobile phone debugging no shared_pref catalogue
<p>I debug the shared_pref catalogue in android mobile phone using the below code:</p>

<pre><code>SharedPreferences settings = getSharedPreferences("filename", MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putString("key", "key1");
editor.putString("content", "abc");
editor.commit();
</code></pre>

<p>I add the below permission in Manifest:</p>

<pre><code>&lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"&gt;&lt;/uses-permission&gt;
&lt;uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"&gt;&lt;/uses-permission&gt;
</code></pre>

<p>I have debugged the code, it has no problem. when i test in mobile phone, i find it has no <code>shared_pref</code> catalogue and no <code>filename.xml</code>. The system is 4.0.</p>

<p>Thanks very much!</p>
