Question

I tried to post an image on Facebook wall from my android application.For this I created a bitmap from layout.Here is my code

                    System.gc();
            Bitmap bitmap = Bitmap.createBitmap(
                    view.getMeasuredWidth(),
                    view.getMeasuredHeight(),
                    Bitmap.Config.ARGB_8888);
            Canvas canvas = new Canvas(bitmap);
            Drawable bgDrawable = newLinearLayout.getBackground();
            if (bgDrawable != null)
                bgDrawable.draw(canvas);
            else
                canvas.drawColor(Color.WHITE);
            view.draw(canvas);
            Matrix matrix = new Matrix();
            // resize the bit map
            matrix.postScale(1.0f, 1.0f);

            // recreate the new Bitmap
            Bitmap resizedBitmap = null;
            resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,
                    bitmap.getWidth(), bitmap.getHeight(), matrix, true);
            //Canvas resizedCanvas = new Canvas(resizedBitmap);

            if (bitmap != null) {
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                resizedBitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
                Bundle parameters = new Bundle();
                byte[] data = baos.toByteArray();
                parameters.putByteArray("picture", data);
                DataKeeper.getInstance().setBundleToPost(parameters);

            }
            bitmap.recycle();

It shows OutOfMemory exception.I know that this is due to imagesize exceeds its available size.How can i resize image without lossing its quality? I tried to correct this using BitmapFactory.Options. But does not work.How can solve this exception?

Regards
Asha

Answer 1

use this :

BitmapFactory.Options options=new BitmapFactory.Options();
options.inSampleSize = 8;
Bitmap preview_bitmap=BitmapFactory.decodeStream(is,null,options);

for more detail see this link

link