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copied!<p>If I understand correctly, you have images and videos served by content provider and accessible as URIs. You want to create thumbnails for such images and videos.</p> <p>I don't know how to do this with video files, but this is how I will implement it with image files.</p> <ol> <li><p>Open the image as InputStream using ContentResolver's openInputStream method. <a href="http://developer.android.com/reference/android/content/ContentResolver.html#openInputStream%28android.net.Uri%29" rel="nofollow noreferrer">http://developer.android.com/reference/android/content/ContentResolver.html#openInputStream%28android.net.Uri%29</a></p></li> <li><p>Create a BitmapDrawable with the above InputStream using this method <a href="http://developer.android.com/reference/android/graphics/drawable/BitmapDrawable.html#BitmapDrawable%28android.content.res.Resources,%20java.io.InputStream%29" rel="nofollow noreferrer">http://developer.android.com/reference/android/graphics/drawable/BitmapDrawable.html#BitmapDrawable%28android.content.res.Resources,%20java.io.InputStream%29</a></p></li> <li><p>Scale down the BitmapDrawable to desired width and height of thumbnail. Follow this tutorial. <a href="http://www.anddev.org/resize_and_rotate_image_-_example-t621.html" rel="nofollow noreferrer">http://www.anddev.org/resize_and_rotate_image_-_example-t621.html</a></p></li> <li><p>[Optional] You may want to cache the thumbnail, so that you don't have to repeat above steps everytime the user accesses your Gallery.</p></li> </ol>

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