5

I have a simple layout, a listview, and two icons for filtering and sorting options. When I click on the either of the two options I have a layout that is placed above the listview and covers only 60% of the screen thereby making the listview below it partially visible. What I want to achieve is to disable the scrolling for that listview also, none of the listview item should be clickable as long as the overlay is visible.

I tried using

setEnabled(false)
setClickable(false)

on the listview but it doesn't make any difference. What are other ways to achieve this.

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3 Answers 3

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1

I suggest that the overlay will be on the whole screen. Then, you can wrap the overlay with (vertical) linear layout with weights (to achieve 60%/40% ratio). In the linear layout, place your current overlay as the first child and as a second child put a transparent view that will block touch events. This way you won't need to do any modifications to the list view.

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2 Comments

Why not make the filter option container a child of the overlay (you will need to make the overlay relative/frame layout). Have you tried what I suggested?
I took your suggestion, but instead of using transparent second child to block touch events, my semi transparent overlay mask does that work for me.
0

You can use this for disabling the parent scrollview

parentview.requestDisallowInterceptTouchEvent(true);

if the overlay is visible .

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1 Comment

that would make it perfect. Thanks
0

To disable the scrolling you can use the OnTouchListener()

listView.setOnTouchListener(new OnTouchListener() {
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_MOVE) {
            return true; // Indicates that this has been handled by you and will not be forwarded further.
        }
        return false;
    }
});

OR

listView.setScrollContainer(false);

For disabling the click, In your custom ArrayAdapter override isEnabled method as following

@Override
public boolean isEnabled(int position) {
    return false;
}
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3 Comments

what if I want to enable clickability again?
"return true;" in isEnabled. You may use a boolean and return that based on your need.
if I am not wrong isEnabled would work when I am creating list initially, that is when I first load the list, I understand that in such a case isEnabled would work based on any condition I apply and set the view's clickability, but would it even work after the listview is already created and then after that on some user click action I wish to decide clickability? I am a bit confused on this front.

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