android - Preview image in my list of files -

android - Preview image in my list of files -

i have list of files in app , each 1 of them has icon or image next title. want icon preview image of file , i've used next method:

imageview image = (imageview) vi.findviewbyid(r.id.icon); image.setimagebitmap(mediastore.images.thumbnails.getthumbnail( activity.getcontentresolver(), long.valueof(r.drawable.img_file), mediastore.images.thumbnails.micro_kind, (bitmapfactory.options) null));

this code doesn't work in app, there no image in icon.

can help me, please? thanks.

android thumbnails