Android gets thumbnails of images and videos

Retrieve image thumbnails:

Java code

1. Byte [] imagebyte = getimagefromurl (urlpath. Trim ());
2. // The following is to convert the image into a thumbnail and then load it
3. Bitmapfactory. Options = new bitmapfactory. Options ();
4. Options. injustdecodebounds = true;
5. Bitmapfactory. decodebytearray (imagebyte, 0, imagebyte. length, <span style = "background-color: RGB (255,255,255);"> options </span>); <span style = "line-Height: 25px; font-size: 14px;
   White-space: normal; "> // The returned bitmap is empty </span>

Byte [] imagebyte = getimagefromurl (urlpath. trim (); // The following is to convert the image into a thumbnail and then load bitmapfactory. options = new bitmapfactory. options (); options. injustdecodebounds = true; bitmapfactory. decodebytearray (imagebyte, 0, imagebyte. length, options); // The returned bitmap is null.

Java code

1. Options. injustdecodebounds = false;
2. Int be = (INT) (options. outheight/(float) 200 );
3. If (be <= 0 ){
4. Be = 1;
5. }
6. Options. insamplesize = be;
7. Return bitmapfactory. decodebytearray (imagebyte,
   0, imagebyte. length, options); // returns a thumbnail.

Options. injustdecodebounds = false; int be = (INT) (options. outheight/(float) 200); If (be <= 0) {Be = 1;} options. insamplesize = be; return bitmapfactory. decodebytearray (imagebyte, 0, imagebyte. length, options); // returns a thumbnail.

Get the video thumbnail:

/**

* Obtain the specified video thumbnail Based on the video URI address.

* @ Param cr

* @ Param URI indicates the URI of the local video.

* @ Return returns bitmap data.

*/

Public static bitmap getvideothumbnail (contentresolver Cr, Uri URI ){

Java code

1. Bitmap bitmap = NULL;
2. Bitmapfactory. Options = new bitmapfactory. Options ();
3. Options. indither = false;
4. Options. inpreferredconfig = bitmap. config. argb_8888;
5. Cursor cursor = Cr. Query (Uri, new string [] {mediastore. Video. Media. _ id },
   Null, null,
   Null );
7. If (cursor = NULL | cursor. getcount () =
   0 ){
8. Return NULL;
9. }
10. Cursor. movetofirst ();
11. String videoid = cursor. getstring (cursor. getcolumnindex (mediastore. Video. Media. _ id ));
    // Image ID in image table. s
13. If (videoid = NULL ){
14. Return NULL;
15. }
16. Cursor. Close ();
17. Long videoidlong = long. parselong (videoid );
18. Bitmap = mediastore. Video. thumbnails. getthumbnail (Cr, videoidlong, images. thumbnails. micro_kind, options );
20. Return bitmap;
21. }

Bitmap bitmap = NULL; bitmapfactory. options = new bitmapfactory. options (); options. indither = false; options. inpreferredconfig = bitmap. config. argb_8888; cursor = CR. query (Uri, new string [] {mediastore. video. media. _ id}, null); If (cursor = NULL | cursor. getcount () = 0) {return NULL;} cursor. movetofirst (); string videoid = cursor. getstring (cursor. getcolumnindex (mediastore. video. media. _ id); // image ID in image table. sif (videoid = NULL) {return NULL;} cursor. close (); long videoidlong = long. parselong (videoid); bitmap = mediastore. video. thumbnails. getthumbnail (Cr, videoidlong, images. thumbnails. micro_kind, options); Return bitmap ;}

/**

* Obtain the specified video thumbnail Based on the video address path in the mobile phone.

* @ Param cr

* @ Param filename local video address

* @ Return returns bitmap data.

*/

Java code

1. Public static bitmap getvideothumbnail (contentresolver Cr, Uri URI ){
2. Bitmap bitmap = NULL;
3. Bitmapfactory. Options = new bitmapfactory. Options ();
4. Options. indither = false;
5. Options. inpreferredconfig = bitmap. config. argb_8888;
6. Cursor cursor = Cr. Query (Uri, new string [] {mediastore. Video. Media. _ id },
   Null, null,
   Null );
8. If (cursor = NULL | cursor. getcount () =
   0 ){
9. Return NULL;
10. }
11. Cursor. movetofirst ();
12. String videoid = cursor. getstring (cursor. getcolumnindex (mediastore. Video. Media. _ id ));
    // Image ID in image table. s
14. If (videoid = NULL ){
15. Return NULL;
16. }
17. Cursor. Close ();
18. Long videoidlong = long. parselong (videoid );
19. Bitmap = mediastore. Video. thumbnails. getthumbnail (Cr, videoidlong, images. thumbnails. micro_kind, options );
21. Return bitmap;
22. }