Android Swipe Gesture Not Working For Child Views

I have a layout with some clickable views in it. I have implemented swipe gesture as per this. This is working great if you swipe in an empty area, but it does not work if you sta

Solution 1:

my working solution to this problem is using an invisible layer above the view with children as following:

<RelativeLayoutandroid:id="@+id/contentLayout"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_above="@+id/linearLayout"android:layout_alignStart="@+id/linearLayout"android:layout_alignParentTop="true"> 
        ... 
  </RelativeLayout><Viewandroid:id="@+id/gesture_view"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_above="@+id/linearLayout"android:layout_alignStart="@+id/linearLayout"android:layout_alignParentTop="true"android:focusable="true"android:focusableInTouchMode="true" />

where contentLayout contains multiple children including some buttons.

Second step is catching touch events on this gesture_view and proxying them to both contentLayout and my GestureDetector code (similar to the one you linked on the question) as following:

gesture_view.setOnTouchListener { _, event ->
    contentLayout.dispatchTouchEvent(event)
    gestureListener.onTouch(event)
    true
}

Note, you need to be careful about how you deliver the events to the view behind gesture_view. Simply contentLayout#onTouch will not work. It has to be contentLayout.dispatchTouchEvent

Solution 2:

Set android:clickable=false in your child views. This will prevent them from intercepting the touch events from the parent.