title: Android: Failed to ensure directory
body: <p>I have been using "<code>Environment.getExternalStorage()</code>" to store and manage files. And there is no warning message from <code>logcat</code> with that method and works greatly fine.</p>
  
  <p>But, My project needs to use method "<code>Context.getExternalFilesDir(String type)</code>" and there is a warning message</p>
  
  <blockquote>
    <p>ContextImpl:Failed to ensure directory: /storage/external_SD/Android/data/(package name)/files</p>
  </blockquote>
  
  <p>Fortunately that File object works fine(reading or write or making folder works, too). </p>
  
  <p>But I want to know how to resolve that warning message. Do I miss something?</p>