Hi Mark,
I've used the camera code from the Advanced Android book and it's
working nicely. Thank you.
Just a couple of basic questions (for Mark, or anyone else) about the
retrieval/URI issue, both assuming the photo is saved on the SD card
as "photo.jpg".
1. Thumbnail display. When I go back to the first screen of the
application, I want to show an ImageView of the jpeg that the user has
just taken. Current code, which doesn't work because it's not looking
in the SD card:
bmp = BitmapFactory.decodeStream(openFileInput("photo.jpg"));
iv.setImageBitmap(bmp);
This gives the error: "java.IO.FileNotFoundException: /data/data/
com.android.filename/files/photo.jpg". How can I ask BitmapFactory to
look in the SD card for the jpeg?
2. Uploading the jpeg - I would like to convert the jpeg to a byte[]
array, to upload it as part of a FilePart. Again, how can I retrieve
the jpeg from the SD card to do this?
My previous code used a media URI to retrieve a bitmap, compress it
into a jpeg and write it to a byte array. This worked, but now I need
to replace this with a reference to "photo.jpg":
Bitmap bitmap;
ByteArrayOutputStream imageByteStream;
byte[] imageByteArray = null;
bitmap = android.provider.MediaStore.Images.Media.getBitmap
(getContentResolver(), uri);
imageByteStream = new ByteArrayOutputStream();
if (bitmap == null) {
Log.d(LOG_TAG, "No bitmap");
}
// Compress bmp to jpg, write to the byte output stream
bitmap.compress(Bitmap.CompressFormat.JPEG, 80, imageByteStream);
// Turn the byte stream into a byte array
imageByteArray = imageByteStream.toByteArray();
Thanks again,
Anna
On May 7, 1:14 am, Mark Murphy <mmur...@commonsware.com> wrote:
> Anna PS wrote:
> > What I don't know is what
> > to launch when the user clicks on it. A modified version of the Camera
> > class, or something like MediaStore.ACTION_IMAGE_CAPTURE?
>
> I haven't used the latter, so I can't comment on it.
>
> > I need to (a) display the photo as a thumbnail on the activity's home
> > screen, and (b) upload the photo as part of a multipart message.
>
> > In both cases I need some way to refer back to the photo that the user
> > has taken. I'm assuming the only way is via aURI? Is there another
> > way?
>
> In terms of the thumbnail, you can either let Android scale it
> automatically from a file or use Bitmap to scale it under your control
> and hand the Bitmap to the ImageView. Neither of those requires aURI.
>
> I don't know how you intend to send the email and therefore what might
> be required for it.
>
> --
> Mark Murphy (a Commons
> Guy)http://commonsware.com|http://twitter.com/commonsguy
>
> Android App Developer Books:http://commonsware.com/books.html
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