using openFileDescriptor instead of openAssetFileDescriptor.
On Wed, Oct 21, 2009 at 3:09 PM, Samuh <samuh.va...@gmail.com> wrote:
>
> I am working on a small program that is supposed to :
> 1. Display images on the SD card
> 2. Get the image chosen by the User and display it on Canvas.
> 3. Since the image can be large, sub sample it/ scale it or something
> appropriate
>
> I got the first two parts done using the following snippets:
>
> 1. By launching an intent such as:
> Intent photoPickerIntent = new Intent(
> Intent.ACTION_GET_CONTENT);
> photoPickerIntent.setType("image/*");
> startActivityForResult(photoPickerIntent, RQST_CODE);
>
> 2. The chosen image URI is received in onActivityResult(..):
> Uri chosenImageUri = data.getData();
>
> Now, I can create a Bitmap object from this URI :
> Media.getBitmap(this.getContentResolver(),chosenImageUri);
>
> The problem is: I want to resize/sub sample this bitmap. I did a bit
> of reading and found a certain
> BitmapFactory.Options class that has parameters whereby one can
> specify the sample size. This "options" instance can be passed to one
> of several overloaded BitmapFactory.decodeXX(..) methods, but none of
> these methods take a URI as parameter.
>
> Is there a way to do this?
>
> I even tried this:
> BitmapFactory.Options options = new BitmapFactory.Options();
> options.inSampleSize = 2;
>
> AssetFileDescriptor fileDescriptor =null;
> try {
> fileDescriptor =
> this.getContentResolver().openAssetFileDescriptor
> (chosenImageUri,"r");
> } catch (FileNotFoundException e) {
> e.printStackTrace();
> }
> finally{
> try {
> fileDescriptor.close();
> } catch (IOException e) {
> e.printStackTrace();
> }
> }
>
> mBitmap = BitmapFactory.decodeFileDescriptor
> (fileDescriptor.getFileDescriptor(),
> null,
> options);
>
> But i am still getting null in mBitmap.
>
>
>
>
> >
>
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