Disabling animation in ViewPager

Question

I\'d like to disable all the animations for the transitions in my custom ViewPager. This view pager contains four tabs -and each tab loads a Fragment

Answer 1

I was searching for disabling the swipe animation even swipe by the user here is my implementation

1-Override Viewpager method onInterceptTouchEvent and onTouchEvent

2- create your own GestureDetector

3- detect the swipe gesture and use the setCurrentItem(item, false)

ViewPager

public class ViewPagerNoSwipe extends ViewPager {
    private final GestureDetector gestureDetector;
    private OnSwipeListener mOnSwipeListener;

    public void setOnSwipeListener(OnSwipeListener onSwipeListener) {
        mOnSwipeListener = onSwipeListener;
    }

    public ViewPagerNoSwipe(@NonNull Context context) {
        super(context);
        gestureDetector = new GestureDetector(context, new GestureListener());

    }

    public ViewPagerNoSwipe(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        gestureDetector = new GestureDetector(context, new GestureListener());


    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        return true;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        gestureDetector.onTouchEvent(ev);
        return false;
    }

    public class GestureListener extends GestureDetector.SimpleOnGestureListener {

        private static final int SWIPE_THRESHOLD = 100;
        private static final int SWIPE_VELOCITY_THRESHOLD = 100;

        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            boolean result = false;
            try {
                float diffY = e2.getY() - e1.getY();
                float diffX = e2.getX() - e1.getX();
                if (Math.abs(diffX) > Math.abs(diffY)) {
                    if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
                        if (diffX > 0) {
                            if(mOnSwipeListener!=null)
                            mOnSwipeListener.onSwipeRight();
                        } else {
                            if(mOnSwipeListener!=null)
                                mOnSwipeListener.onSwipeLeft();
                        }
                        result = true;
                    }
                } else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
                    if (diffY > 0) {
                        if(mOnSwipeListener!=null)
                            mOnSwipeListener.onSwipeBottom();
                    } else {
                        if(mOnSwipeListener!=null)
                            mOnSwipeListener.onSwipeTop();
                    }
                    result = true;
                }
            } catch (Exception exception) {
                exception.printStackTrace();
            }
            return result;
        }
    }

    public interface OnSwipeListener {

         void onSwipeRight();

        void onSwipeLeft();

        void onSwipeTop();

        void onSwipeBottom();
    }
}

the when you are set up the ViewPager set the swipeListener

postsPager.setOnSwipeListener(new ViewPagerNoSwipe.OnSwipeListener() {
            @Override
            public void onSwipeRight() {

              postsPager.setCurrentItem(postsPager.getCurrentItem() + 1,false);

            }

            @Override
            public void onSwipeLeft() {

            postsPager.setCurrentItem(postsPager.getCurrentItem() - 1, false);

            }
             ...
           }

Answer 2

I finally found out: the issue can be solved by just calling the mViewPager.setCurrentItem(position) with an extra parameter to false, which is the smooth scroll for the ViewPager. After this, the scroll will be done without any smoothing and thus the animations won't be seen.

Answer 3

In the tabselected listener, just set the second argument of the setCurrentItem to false to disable the smooth scrolling.

mBottomNavigation.setOnTabSelectedListener((position, wasSelected) -> {


       switch (position) {
            case 0:
                viewPager.setCurrentItem(0, false);

                return true;
            case 1:
                viewPager.setCurrentItem(1, false);

                return true;
            case 2:
                viewPager.setCurrentItem(2, false);

                return true;
        }
        return false;
    });

Answer 4

Here's another solution:

• Subclass the ViewPager (your custom ViewPager)
• Override the two setCurrentItem methods

Code Snippet:

@Override
public void setCurrentItem(int item, boolean smoothScroll) {
    super.setCurrentItem(item, false);
}

@Override
public void setCurrentItem(int item) {
    super.setCurrentItem(item, false);
}

By setting smoothScroll to false, you're disabling the scroll animation.