How can I set visibily gone on scrolling downwards?

Question

I have kept a button in my scroll view which should be visible only when I am scrolling up and should get invisible as I scroll down like in paytm. It is a simple scroll view inside a fragment.

      scrollBtn.setVisibility(View.GONE);

    scrollView.setOnScrollChangeListener(new View.OnScrollChangeListener() {
        @Override
        public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
            scroll.setVisibility(View.VISIBLE);

        }
    });

    scrollBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            scrollView.scrollTo(0, 0);
        }
    });

Hello if you need some help you should provide some code. Anyway you should handle the scroll event of the scroll view and hide or show the button depending the scroll direction. — Juanjo Berenguer, Sep 05 '18 at 09:42
https://stackoverflow.com/questions/10713312/can-i-have-onscrolllistener-for-a-scrollview — Atiq, Sep 05 '18 at 09:51
@JuanjoBerenguer yehh.. added the code.. inintially I have kept the visibillity of scroll btn gone.. — Surbhi Kartpay, Sep 06 '18 at 10:18
@SurbhiKartpay check my answer hope this help you. if it's helpful then pls do mark as a right tickmark. happy to help you. — InsaneCat, Sep 06 '18 at 10:31

score 1 · Accepted Answer · answered Sep 06 '18 at 10:29

1

This should help you.

Code

scrollView.setOnScrollChangeListener(new View.OnScrollChangeListener() {
           @Override
           public void onScrollChange(View view, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
               //Scrolling down
               if(scrollY<oldScrollY){
                   scrollBtn.setVisibility(View.GONE);
               }else{
                   scrollBtn.setVisibility(View.VISIBLE);
               }
           }
       });

answered Sep 06 '18 at 10:29

Juanjo Berenguer

789
1
5
8

Its working.. but if I keep on scrolling even when I reached top the button gets visible... – Surbhi Kartpay Sep 06 '18 at 11:24
Thank you.. I just have to make make the visibility of scrollbtn GONE, after its onClick... – Surbhi Kartpay Sep 10 '18 at 11:12
Hello. I am glad to know that! Happy coding. – Juanjo Berenguer Sep 10 '18 at 11:14

score 0 · Answer 2 · answered Sep 05 '18 at 13:50

0

check out this one Detecting the scrolling direction in the adapter (up/down) and inside mIsScrollingUp = false;

use your code to hide the layout u need

answered Sep 05 '18 at 13:50

hossam scott

466
5
28

Can you please tell me where to add this line of code? – Surbhi Kartpay Sep 06 '18 at 10:15

How can I set visibily gone on scrolling downwards?

2 Answers2