Question

Does anyone know how to modify sensitivity of ViewPager?

Currently I use a ViewPager from android v4 support library to implement my own photo viewer.

However, default ViewPager is too sensitive, when my finger touch down on screen and moves by a very short distinct(maybe just 0.5cm). Then ViewPager will be toggled to scroll to next/previous photo view.

Is there any way to overwrite default behavior of ViewPager to decrease sensitivity?

Thanks to any response.

Answer 1

I’ve checked out ViewPager.java from src of compatibility library and seems there’s not way to do it by xml or some setter. ViewPager has code like the following:

final float density = context.getResources().getDisplayMetrics().density;
mFlingDistance = (int) (MIN_DISTANCE_FOR_FLING * density);
mCloseEnough = (int) (CLOSE_ENOUGH * density);
mDefaultGutterSize = (int) (DEFAULT_GUTTER_SIZE * density);

As You can see, it uses it’s internal constants for determination of fling distance and etc.

Good news are: You can copy ViewPager (here licence of it should be considered) to Your code and extend it e.g. to get fling distance from xml attribute.