图片预览-Android

Question

The image below is a cardview within a feedback section, the purpose is that the user picks an image from the device's gallery and attach it to an e-mail with that image being previewed, I got everything up and running (the user successfully picks an image and send it as an attachment). however I found myself stuck and can't figure how to add a preview to that image (in the grey part of the cardview which is an ImageView )

PS. aside from the part where the user picks an image from the gallery and attaching it to the email I didn't make any progress in coding the preview part, and for preserving the community guidelines I found it useless to post unrelated code

Answer 1

Assuming you have the uri from the image taken by camera or gallery:

BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = false;
InputStream imageStream = context.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(imageStream, null, options);
imageStream.close();

imageview.setImageBitmap(bitmap);