问题
I'm trying to delete some files or directories from the internal memory (ASUS TF101) using the commands File.delete(). However, using the Android File explorer I can see how the files are removed, but using the Windows explorer they still show there.
I solved a similar issue when adding files just creating a MediaScannerConection (and using the method scanFile).
Does anyone know how to solve this problem? Of course it´s not acceptable to restart the device as the final user will not like this "solution".
回答1:
See the answer of manisha in this thread: Android file delete leaves empty placeholder in Gallery
In my case, it worked fine because i was saving a photo and then scanning it using the MediaScannerConnection, so when the scan finishes i have the URI of that file and then i can use the following code whitout problems.
getContentResolver().delete(imageUri, null, null);
Hope this works for you. This seems to be more suitable than forcing a SD Card remount by sending an intent to android system.
回答2:
I had the same problem, but I found the answear:
Android uses a media table to handle files. When you make changes to a file, you must update this table.
Try this:
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory())));
Google doc: http://developer.android.com/reference/android/content/Intent.html#ACTION_MEDIA_MOUNTED
来源：https://stackoverflow.com/questions/11787155/android-deleting-files-mediascannerconnection