How to disable HorizontalScrollView scrolling on button click and enable again on another button click?

Question

I added a HorizontalScrollView in xml and I want to disable scrolling on button click and enable again on another button click.

Disabling scrolling with button click works but I don't know how to enable scrolling again.

The code below is how disabling scrolling worked.

class OnTouch implements View.OnTouchListener { @Override public boolean onTouch(View v, MotionEvent event) { return true; } }

I added the above class and then,

final HorizontalScrollView scrollView = (HorizontalScrollView)findViewById (R.id.horizontalScrollView); Button stop = (Button)findViewById(R.id.stop); stop.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { scrollView.setOnTouchListener(new OnTouch()); } });

I added the above code inside onCreate method. I want to add another button(maybe "scroll") and I want that button to enable scrolling again.

lionscribe · Accepted Answer · 2017-11-05 05:36:21Z

How about this (I didn't test it, so there may be typos);

class OnTouch implements View.OnTouchListener { public boolean intercept = false; @Override public boolean onTouch(View v, MotionEvent event) { return intercept; } } final OnTouch listener = new OnTouch()); final HorizontalScrollView scrollView = (HorizontalScrollView)findViewById (R.id.horizontalScrollView); scrollView.setOnTouchListener(listener); Button stop = (Button)findViewById(R.id.stop); stop.setOnClickListener(new View.OnClickListener() { listener.intercept=true}); Button start = (Button)findViewById(R.id.start); start.setOnClickListener(new View.OnClickListener() { listener.intercept=false});

Zelig · Accepted Answer · 2017-11-05 05:41:58Z

1 - In the onClickListener function associated to your Button :

a) remove scrollView.setOnTouchListener(new OnTouch()),

b) toggle a boolean (scrollEnabled for instance) to indicate if scrolling is enabled or not.

2 - In your ScrollView class, override the onTouchEvent function and put this in it :

 if(scrollEnabled){ return(false); else { return(true); }

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