Disabling animation in ViewPager
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.
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.
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);
}
...
}