android how to clean out the album cache?

I obviously regard the file delete () the
SD card to confirm that it is indeed deleted
But the open system that "Album" or to see thumbnails (even open!)

How to ensure privacy, the album cache clean out

What settings do not, and can not allow the user to set the content of the point, another reboot seems normal, but on a restart
software is also not allowedYou shoes have encountered this problem supposed to die?

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Reply:
getCacheDir (). getAbsolutePath (), you can get to the cache directory path you this application, generally
/ Data / data / *** (your application package name) / cache
You put getCacheDir () try to delete files in this directory

Reply:
I pulled the card is no thumbnail of








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Reply:

cited a floor gesanri reply:.

getCacheDir () getAbsolutePath (), you can get to the cache directory path you this application, generally
/ Data / data / *** (your application package name) / cache
You put getCacheDir () try to delete files in this directory

Not clean up the program cache it, but the next test, no, open the "System album" That's still a few pictures, had been able to preview, restart the machine would not, but can not allow the user to restart the machine, depressed
I just put DCIM / Camera / delete Lane xxxxx.jpg gave out, how to make the album also cleared away the cache off


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reference to the second floor cyu235 reply:

I pulled the card is no thumbnail of

Not allow the user to pull the card, you install a software, delete an album in Figure let you pull the card, you will collapse, haha
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Thought you said your application, some phone dcim / camera also has the following cache directory, or a directory similar thumbnails
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Figure sdcard should exist within the database, right, sdcard pull up a message is issued, the system will re-search sdcard the map, and then rebuild the database information, if you want to clear out maps, should be to operate the database through a provider, make clear action
Reply:
private static void scanPhoto (Context ctx, String imgFileName)
{
Intent mediaScanIntent = new Intent (Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File file = new File (imgFileName);
Uri contentUri = Uri.fromFile (file);
mediaScanIntent.setData (contentUri);
ctx.sendBroadcast (mediaScanIntent);
}