title: Read file of internal storage failed, error is "open failed: EACCES (Permission denied)"
body: <p>Codes are below</p>
  
  <pre><code>...
  File newFile = new File(getFilesDir(), "time.jpg");
  Bitmap bitmap=BitmapFactory.decodeFile(newFile.toString());
  show_image.setImageBitmap(bitmap);
  ....
  </code></pre>
  
  <p>Get errors are below</p>
  
  <pre><code>Unable to decode stream: java.io.FileNotFoundException: 
  /data/user/0/com.example.flover.testdemo/files/time.jpg: 
  open failed: EACCES (Permission denied)
  </code></pre>
  
  <p>Android device version is 6.0, I couldn't figure out why this error occurred, according to google api doc, app has right to access to files which belong to itself.
  If anyone gets answers, please tell me. Thanks</p>