Low Memory Resizing

gistfile1.txt

	public static Bitmap resize(Context context, Uri uri) {
		// decodes image and scales it to reduce memory consumption
		try {
			// Decode image size
			BitmapFactory.Options o = new BitmapFactory.Options();
			o.inJustDecodeBounds = true;
			
			BitmapFactory.decodeStream(context.getContentResolver().openInputStream(uri), null, o);

			// The new size we want to scale to
			final int REQUIRED_SIZE = 70;

			// Find the correct scale value. It should be the power of 2.
			int width_tmp = o.outWidth, height_tmp = o.outHeight;
			int scale = 1;
			while (true) {
				if (width_tmp / 2 < REQUIRED_SIZE
						|| height_tmp / 2 < REQUIRED_SIZE)
					break;
				width_tmp /= 2;
				height_tmp /= 2;
				scale *= 2;
			}

			// Decode with inSampleSize
			BitmapFactory.Options o2 = new BitmapFactory.Options();
			o2.inSampleSize = scale;
			return BitmapFactory.decodeStream(context.getContentResolver().openInputStream(uri), null, o2);
		} catch (FileNotFoundException e) {
		}
		return null;
	}