1 files changed, 19 insertions, 11 deletions
diff --git a/src/view/com/pager/PagerHeaderContext.tsx b/src/view/com/pager/PagerHeaderContext.tsx
index fd4cc7463..c979f7a6d 100644
--- a/src/view/com/pager/PagerHeaderContext.tsx
+++ b/src/view/com/pager/PagerHeaderContext.tsx
@@ -1,40 +1,48 @@
 import React, {useContext} from 'react'
 import {SharedValue} from 'react-native-reanimated'
 
-import {isIOS} from '#/platform/detection'
+import {isNative} from '#/platform/detection'
 
-export const PagerHeaderContext =
-  React.createContext<SharedValue<number> | null>(null)
+export const PagerHeaderContext = React.createContext<{
+  scrollY: SharedValue<number>
+  headerHeight: number
+} | null>(null)
 
 /**
- * Passes the scrollY value to the pager header's banner, so it can grow on
- * overscroll on iOS. Not necessary to use this context provider on other platforms.
+ * Passes information about the scroll position and header height down via
+ * context for the pager header to consume.
  *
- * @platform ios
+ * @platform ios, android
  */
 export function PagerHeaderProvider({
   scrollY,
+  headerHeight,
   children,
 }: {
   scrollY: SharedValue<number>
+  headerHeight: number
   children: React.ReactNode
 }) {
+  const value = React.useMemo(
+    () => ({scrollY, headerHeight}),
+    [scrollY, headerHeight],
+  )
   return (
-    <PagerHeaderContext.Provider value={scrollY}>
+    <PagerHeaderContext.Provider value={value}>
       {children}
     </PagerHeaderContext.Provider>
   )
 }
 
 export function usePagerHeaderContext() {
-  const scrollY = useContext(PagerHeaderContext)
-  if (isIOS) {
-    if (!scrollY) {
+  const ctx = useContext(PagerHeaderContext)
+  if (isNative) {
+    if (!ctx) {
       throw new Error(
         'usePagerHeaderContext must be used within a HeaderProvider',
       )
     }
-    return {scrollY}
+    return ctx
   } else {
     return null
   }