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ScrollView has a method for setting the x and y scroll offset, but no method for getting the current offset (all I'm really interested is the y offset, since ScrollView only supports vertical scrolling). I don't see any method that would work in the superclasses, and tried getTop() for the content view, which is always zero. Am I missing something?
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To get the current scroll position of ScrollView in React Native, we can set the onScroll prop of the ScrollView to a function that takes the scroll event object as an argument.
The point at which the origin of the content view is offset from the origin of the scroll view.
To scroll to top of the ScrollView with React Native, we assign a ref to the ScrollView and call scrollTo on the ref's value. to create a ref with useRef and set that as the value of the ref prop of the ScrollView . Then we add a Button that calls ref. current.
In Android, a ScrollView is a view group that is used to make vertically scrollable views. A scroll view contains a single direct child only. In order to place multiple views in the scroll view, one needs to make a view group(like LinearLayout) as a direct child and then we can define many views inside it.
Call getScrollY() on the ScrollView
See here for the documentation: http://developer.android.com/reference/android/view/View.html#getScrollY%28%29
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Why don't you try something like this ?
targetScrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() { @Override public void onScrollChanged() { int scrollX = targetScrollView.getScrollX(); Log.d(TAG, "scrollX: " + scrollX); } }); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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