I have a DataTemplate that puts a slider inside a ListView within a TabbedPage. On Android the slider does not move correctly and sliding left to right activates the TabbedPage sliding feature. If the slider is outside the ListView it works correctly. How can I prevent parent controls of the slider from handling the drag gesture?
The method ViewParent.requestDisallowInterceptTouchEvent(boolean) may be of help but which renderer etc would I do this?
I base my answer on the solution provided by York Shen. I didn't like the way parent nesting was hard-coded, so I just added a function to help find the renderer on which we want to call RequestDisallowInterceptTouchEvent. My Slider was nested in another view, which means I needed a different level parent. So here you go:
public override bool DispatchTouchEvent(MotionEvent e)
{
switch (e.Action)
{
case MotionEventActions.Down:
(_navigationPage ??= GetNavigationPage(Parent)).RequestDisallowInterceptTouchEvent(true);
break;
case MotionEventActions.Move:
//This is the core of the problem!!!
_navigationPage.RequestDisallowInterceptTouchEvent(true);
break;
case MotionEventActions.Up:
break;
default:
break;
}
return base.DispatchTouchEvent(e);
}
private IViewParent _navigationPage;
private IViewParent GetNavigationPage(IViewParent parent)
{
if (parent is NavigationPageRenderer)
return parent;
return GetNavigationPage(parent.Parent);
}