Android get thumbnail images and videos on SD card

Need to quickly extract pictures and video thumbnails to directly access Android.provider.MediaStore.Images.Thumbnails And android.provider.MediaStore.Video.Thumbnails These two databases, you can query the thumbnail.

How do you judge a document? You can traverse the database by cursor, comparing the value of the Internal_content_uri field, which is a URI that holds the full path to the multimedia file on the Android phone's SD card.

Uri Originaluri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;

If the video is MediaStore.Video.Media.EXTERNAL_CONTENT_URI;

Contentresolver CR = This.getcontentresolver ();

Cursor Cursor = cr.query (Originaluri, NULL, NULL, NULL, NULL);

if (cursor = = NULL) {

Return

}

For (Cursor.movetofirst ();! Cursor.isafterlast (); Cursor.movetonext ()) {

Long Thumbnailsid = Cursor.getlong (cursor. Getcolumnindex ("_id"));

Bitmap Bitmap = MediaStore.Images.Thumbnails.getThumbnail (CR,

Thumbnailsid, Video.Thumbnails.MICRO_KIND, NULL);

If the video is

Bitmap Bitmap = MediaStore.Video.Thumbnails.getThumbnail (CR,

Thumbnailsid, Video.Thumbnails.MICRO_KIND, NULL);

return bitmap;

}