android get thumbnail of image stored on sdcard whose path is known

Question

Say I have an image stores at path "/mnt/images/abc.jpg". How do I get the system generated thumbnail bitmap for this image. I know how to get the thumbnail of an image from its Uri, but not from its file-path

You can simply create thumbnail video and image using ThumnailUtil class of java Bitmap resized = ThumbnailUtils.extractThumbnail(BitmapFactory.decodeFile(file.getPath()), width, height); — sujith s, Apr 01 '15 at 05:37

score 24 · Answer 1 · answered Mar 13 '13 at 20:47

24

You can try with this:

public static Bitmap getThumbnail(ContentResolver cr, String path) throws Exception {

    Cursor ca = cr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new String[] { MediaStore.MediaColumns._ID }, MediaStore.MediaColumns.DATA + "=?", new String[] {path}, null);
    if (ca != null && ca.moveToFirst()) {
        int id = ca.getInt(ca.getColumnIndex(MediaStore.MediaColumns._ID));
        ca.close();
        return MediaStore.Images.Thumbnails.getThumbnail(cr, id, MediaStore.Images.Thumbnails.MICRO_KIND, null );
    }

    ca.close();
    return null;

}

answered Mar 13 '13 at 20:47

agirardello

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thanks you sir! and obvious, but someone might needs it, if you want to show bigger images, use MediaStore.Images.Thumbnails.MINI_KIND – keybee Jun 12 '15 at 11:31
Best solution that I have found. Thank You very much, this should be accepted answer. – Tunerx Jun 20 '15 at 21:34
1

MINI_KIND is used for : 512 x 384 thumbnail MICRO_KIND is used for : 96 x 96 thumbnail – Ashish Saini Sep 15 '16 at 11:33

dharmendra · Answer 2 · 2014-07-25T12:23:55.880

4

It could be a alternative ways as other had already mentioned in their answer but Easy way i found to get thumbnail is using ExifInterface

    ExifInterface exif = new ExifInterface(pictureFile.getPath());
    byte[] imageData=exif.getThumbnail();
    if (imageData!=null) //it can not able to get the thumbnail for very small images , so better to check null
    Bitmap  thumbnail= BitmapFactory.decodeByteArray(imageData,0,imageData.length);

edited Jul 25 '14 at 12:23

answered May 28 '14 at 05:37

dharmendra

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In some cases, it is not work. Not better than get from Image Store as in the accepted answer. – Huy Tower May 12 '15 at 04:54
Yaa when BitmapFactory wont able to decode byte array then only . – dharmendra May 12 '15 at 06:03

score 4 · Answer 3 · edited May 23 '17 at 10:32

4

You can get the Uri from a file like this:

Uri uri = Uri.fromFile(new File("/mnt/images/abc.jpg"));
Bitmap thumbnail = getPreview(uri);

And the following function gives you the thumbnail:

Bitmap getPreview(Uri uri) {
    File image = new File(uri.getPath());

    BitmapFactory.Options bounds = new BitmapFactory.Options();
    bounds.inJustDecodeBounds = true;
    BitmapFactory.decodeFile(image.getPath(), bounds);
    if ((bounds.outWidth == -1) || (bounds.outHeight == -1))
        return null;

    int originalSize = (bounds.outHeight > bounds.outWidth) ? bounds.outHeight
            : bounds.outWidth;

    BitmapFactory.Options opts = new BitmapFactory.Options();
    opts.inSampleSize = originalSize / THUMBNAIL_SIZE;
    return BitmapFactory.decodeFile(image.getPath(), opts);     
}

edited May 23 '17 at 10:32

Community

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answered Dec 05 '11 at 09:45

Caner

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I think using `MediaStore.Images.Thumbnails.getThumbnail(getContentResolver(), Long.parseLong(_imageUri.getLastPathSegment()), type, null);` would be a better option, since the system most of the time caches the thumbnails – pankajagarwal Dec 05 '11 at 09:53
2

your method to get the uri doesnot seem to be working correctly because for a file with path "/mnt/sdcard/2011-12-02 11.22.50.jpg" the actual uri is ontent://media/external/images/media/556 where as the Uri.fromFile(...) method returns file:///mnt/sdcard/2011-12-02%2011.22.50.jpg – pankajagarwal Dec 05 '11 at 10:06

score 2 · Answer 4 · answered Apr 01 '15 at 05:35

You can simply create thumbnail video and image using ThumnailUtil class of java

Bitmap resized = ThumbnailUtils.extractThumbnail(BitmapFactory.decodeFile(file.getPath()), width, height);


 public static Bitmap createVideoThumbnail (String filePath, int kind)

Added in API level 8 Create a video thumbnail for a video. May return null if the video is corrupt or the format is not supported.

Parameters filePath the path of video file kind could be MINI_KIND or MICRO_KIND

For more Source code of Thumbnail Util class

Developer.android.com

score 0 · Answer 5 · answered Dec 13 '15 at 21:48

Use android Bitmap class and its createScaledBitmap method.

method descroption:

public static Bitmap createScaledBitmap (Bitmap src, int dstWidth, int dstHeight, boolean filter)

example of using:

Bitmap bitmap = BitmapFactory.decodeFile(img_path);
int origWidth = bitmap.getWidth();
int origHeight = bitmap.getHeight();
bitmap = Bitmap.createScaledBitmap(bitmap, origWidth / 10, origHeight / 10, false);

decrease the source file like you want. In my example I reduced it 10 times.

android get thumbnail of image stored on sdcard whose path is known

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