I accidentally deleted the contents of .thumbnails folder in DCIM in sdcard. After deleting it I am unable to access MediaStore.Images.Thumbnails._ID however MediaStore.Images.Media.DATA is having all the images. How do I regenerate thumbnails in the .thumbnails folder to get the details of MediaStore.Images.Thumbnails._ID?

I initially had the idea that the gallery app in Android generates thumbnails in the .thumbnails folder so what I did was clear the cache of gallery app. Unmounted the sdcard and mounted it again in the hope that .thumbnail folder will have all the thumbnails when I relaunch the app

I am using HTC One V(Android version 4.0)

  • 1
    You answered yourself. The gallery automatically recreates the thumbnails.. Nov 5, 2012 at 11:45

2 Answers 2


Go to Setting-->Applications--->Gallery-->Clear Cache

After clearing the cache, open the gallery app, it will automatically regenerate thumbnails.


Looking for something else & came across this... The pathway to an apps cache has changed slightly since original posting back in 2012.

In Marshmallow (at least): Settings→Apps→Gallery→Storage→Clear Cache

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