onLongClick not working in ViewPager.

[captain-miao]

onLongClick not working in ViewPager. onClick() is working.

[venciallee]

In class GestureImageViewTouchListener

tapDetector = new GestureDetector(image.getContext(), new SimpleOnGestureListener() {
        @Override
        public boolean onDoubleTap(MotionEvent e) {
            startZoom(e);
            return true;
        }

        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            if(!inZoom) {
                if(onClickListener != null) {
                    onClickListener.onClick(image);
                    return true;
                }
            }

            return false;
        }

        @Override
        public void onLongPress(MotionEvent e) {
            if(!inZoom) {
                if(onLongClickListener != null) {
                    onLongClickListener.onLongClick(image);
                }
            }
            super.onLongPress(e);
        }
    });

add OnLongClickListener should be ok.

[TracyZhangLei]

Firstly you should add OnLongClickListener like what @venciallee said,but that does not work correctly cause under this situation "DoubleTap" while call OnLongPress,so you should do something to prevent the "OnLongPress" event is called back.

the following is my solution:

1、setIsLongPressedEnabled(false) in onDoubleTap,like:

    tapDetector = new GestureDetector(image.getContext(), new SimpleOnGestureListener() {

    @Override
    public boolean onDoubleTap(MotionEvent e) {
        startZoom(e);
        tapDetector.setIsLongpressEnabled(false);
        return true;
    }

    @Override
    public boolean onSingleTapConfirmed(MotionEvent e) {
        if(!inZoom) {
            if(onClickListener != null) {
                onClickListener.onClick(image);
                return true;
            }
        }
        return false;
    }

    @Override
    public void onLongPress(MotionEvent e) {
        if(!inZoom) {
            if(onLongClickListener != null) {
                onLongClickListener.onLongClick(image);
            }
        }
        super.onLongPress(e);
    }
} );

2、Restore IsLongPressedEnable to true in the ZoomAnimationListener.onComplete(),like this:

   zoomAnimation.setZoomAnimationListener(new ZoomAnimationListener() {
    @Override
    public void onZoom(float scale, float x, float y) {
        if(scale <= maxScale && scale >= minScale) {
            handleScale(scale, x, y);
        }
    }

    @Override
    public void onComplete() {
        inZoom = false;
        handleUp();
        tapDetector.setIsLongpressEnabled(true);
    }
});

hope this can help u.