Android ViewPager Lag

Question

Hello I have a viewpager with several pages(using a fragment state pager), and some pngs as backgrounds to those pages. I already followed the Displaying Bitmaps in the Ui (

Answer 1

Building up on @coderek answer I seem to have solved this by fetching bitmaps without scaling them for specific densities:

BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inScaled = false;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), resource, opts);

((ImageView) view).setImageBitmap(bitmap);

Using an image from drawable folder in an xxhdpi device resulted in up to 8 times more memory being allocated!

P.S.:

You can also down sample the drawable if the resolution is too big:

opts.inSampleSize = 2;