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Differentiate touch events between customView and scroll view

I have one customView and customView added in scroll view. Now i want differentiate both touch events. My problem is when try to scroll, customView also getting touch event and when i try to change in customView, scroll view getting events.
How can we stop customView touch event when scrolling.
How can we stop scroll touch events when customView wants events.
Thanks in advance

You can set touch listener to child view and then in onTouch() event, you can block intercept touch event of parent.
i.e.
v.setOnTouchListener(new OnTouchListener() {
// Setting on Touch Listener for handling the touch inside ScrollView
#Override
public boolean onTouch(View v, MotionEvent event) {
// Disallow the touch request for parent scroll on touch of child view
v.getParent().requestDisallowInterceptTouchEvent(true);
return false;
}
});
About the second question, I don't know exactly what you're doing with customview but maybe you'd like to use click events instead because it's rather not user friendly to use different logic in ontouch and onclick as it will always fire up unexpectedly.

boolean isScrolling = false;
myScrollView.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() { #Override public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY)
isScrolling = scrollX != oldScrollX;
//for vertical scrolling
});
//then onTouchListener
if(!isScrolling){//Do operations on non scrolled state}

HorizontalScrollView inside Movable View

I have a movableView(moves with finger touch movement) of 400*400, it has a horizontal view at bottom (400*100). When I want to scroll horintalScrollView to see the list, my movableView is moving, but horintalSrollView is not taking any touchEvent.
I want it like, when I am touching horizontalScrollView, only it should scroll. And when not touching it and want to move my movableView it should move.
Any suggestions would be helpful.
Thanks

Try this logic...
scrollView.setOnTouchListener(new OnTouchListener() {
// Setting on Touch Listener for handling the touch inside movableView
#Override
public boolean onTouch(View v, MotionEvent event) {
// Disallow the touch request for parent move on touch of child view
v.getParent().requestDisallowInterceptTouchEvent(true);
return false;
}
});

Nested vertical RecyclerViews

I have an issue making 2 nested vertical RecyclerViews. I know this isn't a great pattern, but these are the application requests.
I have a parent RecyclerView, and when a card expands it should scroll to top and in the expanded part, I have another RecyclerView (a list of locations).
The problem is that I couldn't pass the scroll event from the parent, to the child RecyclerView. I read about the NestedScrollingChild interface and tried to enable nestedScrolling in child, but with no success.
Any suggestions?

I fixed it by adding the following code on my main RecyclerView adapter. Works perfectly.
holder.locationsList.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
Log.v(TAG, "CHILD TOUCH");
// Disallow the touch request for parent scroll on touch of child view
v.getParent().requestDisallowInterceptTouchEvent(true);
return false;
}
});

Android - ignore parent view touch on child view touch

I have a layout like
RelativeLayout_Parent
-> RelativeLayout_Child
both views having touch event.
But when I touch on RelativeLayout_Child, touch event for parent is also fired.
How to ignore parent view touch on child view touch?

Very simple, implement OnTouchListener over your child view, and upon receiving Touch Event just return true fro child, this will make sure touch event is not propagated to others.
child_view.setOnTouchListener(new OnTouchListener(){
#Override
public boolean onTouch(View arg0, MotionEvent arg1) {
// this will make sure event is not propagated to others, nesting same view area
return true;
}
});

Handling Intercept touch event without extending ViewGroup

I have a one RelativeLayout and this layout is having nearly 10 views in it.
I have set OnTouchListener to this Layout and doing some work in it and returning true.
this listener is working fine when I touch the layout where there are no View (mean on Empty area). If I touch on child views of this layout, this listener is not firing...
and from the documentation, I understood that we can override onInterceptTouchEvent() by extending ViewGroup (so here RelativeLayout) and handle touch events before child views consume this event...
this will do a trick, but I need to modify many xml files where I need this functionality by replacing RelativeLayout with my CustomRelativeLayout.
so my question is:
is there any way to handle touch event for RelativeLayout (ofcourse ViewGroup) before child views in RelativeLayout consumes event? I don't want to extend RelativeLayout...

Try to override
#Override
public boolean dispatchTouchEvent(MotionEvent ev) {
return super.dispatchTouchEvent(ev);
}
of Activity.
This method is the first that process touch events.
But in this case you need to work with current coordinates of views

While not necessarily being ideal, this works well for smaller layouts that won't have dynamic content.
In xml, set android:clickable="false" to all descendants of the ViewGroup in the layout (including nested ViewGroups and their children). Each child that gets clicked on will then propagate the click to its parent, eventually getting to the ViewGroup's default touch handlers. Make sure to set root ViewGroup, where you want to get the click events as android:clickable="true" or viewgroup.setClickable(true)
If you add views dynamically, make sure to call view.setClickable(false); before adding it to the view hierarchy.

Try add onTouchListener to RelativeLayout
RelativeLayout rl = (RelativeLayout) findViewById( R.id.relativeLauout );
rl.setOnTouchListener( new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
// do something
return false;
}
});
or use method onTouchEvent from Activity
#Override
public boolean onTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
return super.onTouchEvent(event);
}

Try to return false in the onTouchEvent() method of child views when processing ACTION_DOWN event. So the forwarding touch events will not be sent to child views, aka event not consumed.

You can simply set in your xml:
android:clickable="true"