[HideViewOnScrollBehavior] Add a method to get the HideViewOnScrollBehavior associated with the view

Resolves #4768 GIT_ORIGIN_REV_ID=9471abba29b6c63aaeadf6cb4708480e8e8cc0b8 PiperOrigin-RevId: 757874866 (cherry picked from commit 8d044c4)

Author: pubiqq

lib/java/com/google/android/material/behavior/HideViewOnScrollBehavior.java

@@ -421,4 +421,26 @@ public void disableOnTouchExploration(boolean disableOnTouchExploration) {
  public boolean isDisabledOnTouchExploration() {
  return disableOnTouchExploration;
  }
+
+ /**
+ * A utility function to get the {@link HideViewOnScrollBehavior} associated with the {@code
+ * view}.
+ *
+ * @param view The {@link View} with {@link HideViewOnScrollBehavior}.
+ * @return The {@link HideViewOnScrollBehavior} associated with the {@code view}.
+ */
+ @NonNull
+ @SuppressWarnings("unchecked")
+ public static <V extends View> HideViewOnScrollBehavior<V> from(@NonNull V view) {
+ ViewGroup.LayoutParams params = view.getLayoutParams();
+ if (!(params instanceof LayoutParams)) {
+ throw new IllegalArgumentException("The view is not a child of CoordinatorLayout");
+ }
+ CoordinatorLayout.Behavior<?> behavior = ((LayoutParams) params).getBehavior();
+ if (!(behavior instanceof HideViewOnScrollBehavior)) {
+ throw new IllegalArgumentException(
+ "The view is not associated with HideViewOnScrollBehavior");
+ }
+ return (HideViewOnScrollBehavior<V>) behavior;
+ }
 }