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

My solution to avoid this lag when switching pages was: preload images

final Drawable[] images = new Drawable[3];
for(int i=0; i<3; i++){
    int position = i+1;
    images[i] = getResources().getDrawable(getResources().getIdentifier("image"+position, "drawable", getPackageName()));
 }

and then:

mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

        }

        @Override
        public void onPageSelected(int position) {
            imageSwitcher.setImageDrawable(images[position]);
        }

        @Override
        public void onPageScrollStateChanged(int state) {
        }
    });