How to load only one page at time in view pager

Question

I want to load only one page at a time.

viewpager.setOffscreenPageLimit(0);

is not working.

Have a look on this: https://stackoverflow.com/a/44405015/7874047 — Ronak Thakkar, Jun 07 '17 at 06:33

score 3 · Accepted Answer · answered Jun 23 '16 at 12:33

3

you can't do that with a standard ViewPager implementation. If you see sources, you will see, that it sets offscreen page limit to 1, if it is less than 1.

public void setOffscreenPageLimit(int limit) {
        if (limit < DEFAULT_OFFSCREEN_PAGES) { //DEFAULT_OFFSCREEN_PAGES if 1
            Log.w(TAG, "Requested offscreen page limit " + limit + " too small; defaulting to " +
                    DEFAULT_OFFSCREEN_PAGES);
            limit = DEFAULT_OFFSCREEN_PAGES;
        }
        if (limit != mOffscreenPageLimit) {
            mOffscreenPageLimit = limit;
            populate();
        }
    }

You can try to override this method in your custom class.

answered Jun 23 '16 at 12:33

Vladyslav Matviienko

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`populate();` method is package private! – mallaudin Jun 24 '17 at 17:27
@mallaudin, reflection can call any method, including private and package-visible. – Vladyslav Matviienko Jun 24 '17 at 21:31
Yes but that can be fragile. – mallaudin Jun 24 '17 at 21:44
@rams don't try to ask questions in comments. If you have question - **ask a question** – Vladyslav Matviienko Nov 15 '19 at 12:46

score 0 · Answer 2 · answered Jun 23 '16 at 13:32

Why would you want to set the offline page limit to zero?

Having it set to one allows android to pre-emptively load the next view to the view pager improving the user experience and speeding up the load time.

If you must set it to zero then create a custom view pager class that extends ViewPager and then override the setOffScreenPageLimit method

How to load only one page at time in view pager

2 Answers2