Android: Cropping an image to specific size

Question

My intention is to have the user pick an image from the gallery, then have a cropping activity come up. However, I need the rectangle that defines the cropping mask to be locked to a certain dimension and then the user simply repositions it to display a portion of an image.

Any ideas on how this would be done?

Thanks

-T

check: http://stackoverflow.com/questions/12758425/how-to-set-the-output-image-use-com-android-camera-action-crop/ — hcpl, Apr 17 '13 at 09:13

score 15 · Accepted Answer · answered Feb 22 '12 at 02:54

15

Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null)
            .setType("image/*")
            .putExtra("crop", "true")
            .putExtra("aspectX", width)
            .putExtra("aspectY", height)
            .putExtra("outputX", width)
            .putExtra("outputY", height)
            .putExtra("scale", true)
            .putExtra("scaleUpIfNeeded", true)
            .putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f))
            .putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());

answered Feb 22 '12 at 02:54

Brian

789
1
7
14

are you sure ..? i am not getting with this? – GvSharma Apr 17 '14 at 07:32
Thanks a lot. I have been looking for the same :) – Shankar Prasad Jun 27 '14 at 07:15

score 6 · Answer 2 · edited Dec 17 '16 at 07:36

6

You need to create a custom ImageView class to achieve zooming and panning of an image and can have a fixed rectangle image(transparent) overlaying on this image. And can create sub-bitmap of that bitmap. and save it in a file.

createBitmap(Bitmap source, int x, int y, int width, int height);

This method is used to create a sub-bitmap.

http://blog.sephiroth.it/2011/04/04/imageview-zoom-and-scroll/

After achieving zooming and panning, I am not sure if createBitmap can create sub-bitmap from the visible portion of the image(i.e. part of image wont be visible on the screen when it is zoomed), So try getting the drawingCache() from imageView and create sub-bitmap for the same.

edited Dec 17 '16 at 07:36

answered Feb 22 '12 at 02:16

Seshu Vinay

13,560
9
60
109

I can give you custom image class with zooming and panning if you want. – Seshu Vinay Feb 22 '12 at 02:18
how would I grab the sub-bitmap. That sounds like black magic. -TDK – TylerKinkade Feb 22 '12 at 02:19
That custom class would help tremendously. :) – TylerKinkade Feb 22 '12 at 02:21
yea. It does everything for you. – Seshu Vinay Feb 22 '12 at 02:22
Ah I see! You would use the positioning of the rectangle in space to define the coordinates! Killer! – TylerKinkade Feb 22 '12 at 02:22
Where can I find the view for this? – TylerKinkade Feb 22 '12 at 02:25
Yes :) THe custom image view. – TylerKinkade Feb 22 '12 at 02:26
I have added a URL in the answer – Seshu Vinay Feb 22 '12 at 02:30

Android: Cropping an image to specific size

2 Answers2

Linked