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copied!<blockquote> <p>I am trying to make an app that creates a folder not in an external directory a.k.a the sdcard but in the device's memory. </p> </blockquote> <p>I encourage you to read the documentation, as you may be confused about the definition of <a href="http://developer.android.com/guide/topics/data/data-storage.html#filesExternal" rel="nofollow">external</a> and <a href="http://developer.android.com/guide/topics/data/data-storage.html#filesInternal" rel="nofollow">internal</a> storage. External storage means "accessible by the user", it does not mean "an SD card".</p> <blockquote> <p>I am trying to create a folder at the SD card.</p> </blockquote> <p>There is no SD card in most devices. External storage exists in nearly all devices, but it is not necessarily an SD card.</p> <blockquote> <p>Is there anything wrong with my code?</p> </blockquote> <p>You do not have rights to write to the root directory of the device.</p> <blockquote> <p>I want to make a folder near the documents folder of my device</p> </blockquote> <p><a href="http://developer.android.com/reference/android/os/Environment.html#getExternalStoragePublicDirectory%28java.lang.String%29" rel="nofollow">Use <code>Enviroment.getExternalStoragePublicDirectory()</code></a>, passing it <code>Environment.DIRECTORY_DOCUMENTS</code>.</p> <blockquote> <p>Is there any other folder created when an application is installed?</p> </blockquote> <p>You can use <code>getExternalFilesDir()</code>, a method on any <code>Context</code> (such as an <code>Activity</code>). However, this is usually for files that you want to store on external storage but are not necessarily convenient for the user to find.</p>

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