getting Image ThumbNail in Android

Question

I need Thumbnail of an image . I only know about the name of image which is stored in SD card . Can anyone help me.

I needed the thumbnail because I kept getting `java.lang.OutOfMemoryError` when putting all image URIs directly in a GridView. — hexicle, Mar 23 '18 at 19:55

score 70 · Accepted Answer · answered Jan 01 '13 at 11:57

70

Try this.

final int THUMBSIZE = 64;

Bitmap ThumbImage = ThumbnailUtils.extractThumbnail(BitmapFactory.decodeFile(imagePath), 
                    THUMBSIZE, THUMBSIZE);

Refer this for more details.

answered Jan 01 '13 at 11:57

Chirag

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What is `imagePath` ? – Azim Ansari Jul 08 '15 at 09:59
It is image path name stored in sdcard. – Chirag Jul 10 '15 at 03:59
if you are using an Uri for the image you can get the path using, for example imageUri.getPath() – xhenryx14 Oct 19 '16 at 14:44
Right to the point and very useful indeed, thanks! – codingmechanic Jan 31 '22 at 07:35

score 11 · Answer 2 · answered Jan 01 '13 at 13:41

Using MediaStore.Images.Thumbnails you can query and get two kinds of thumbnails: MINI_KIND: 512 x 384 thumbnail MICRO_KIND: 96 x 96 thumbnail.

The advantage of using this call is that the thumbnails are cached by the MediaStore. So retrieval would be faster if the thumbnail was previously created.

score 2 · Answer 3 · answered Jan 01 '13 at 12:02

byte[] imageData = null;

try
{

final int THUMBNAIL_SIZE = 64;

FileInputStream fis = new FileInputStream(fileName);
Bitmap imageBitmap = BitmapFactory.decodeStream(fis);

Float width = new Float(imageBitmap.getWidth());
Float height = new Float(imageBitmap.getHeight());
Float ratio = width/height;
imageBitmap = Bitmap.createScaledBitmap(imageBitmap, (int)(THUMBNAIL_SIZE * ratio), THUMBNAIL_SIZE, false);

ByteArrayOutputStream baos = new ByteArrayOutputStream();
imageBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
imageData = baos.toByteArray();

}
catch(Exception ex) {

}

score 1 · Answer 4 · answered Aug 25 '16 at 11:39

If you like HQ thumbnails, so use [RapidDecoder][1] library. It is simple as follow:

import rapid.decoder.BitmapDecoder;
...
Bitmap bitmap = BitmapDecoder.from(getResources(), R.drawable.image)
                             .scale(width, height)
                             .useBuiltInDecoder(true)
                             .decode();

Don't forget to use builtin decoder if you want to scale down less than 50% and a HQ result.

getting Image ThumbNail in Android

4 Answers4

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