From 1e06c803334e8207347ccd50d6397574f35129dd Mon Sep 17 00:00:00 2001
From: dan <dan.abramov@gmail.com>
Date: Fri, 7 Jun 2024 22:27:16 -0700
Subject: [PATCH] Reliably focus keyboard on Android (#4427)

(cherry picked from commit a2d1cf68b9cf6b2d935439e522c838359a94a9a4)
---
 src/view/com/composer/Composer.tsx | 33 +++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/src/view/com/composer/Composer.tsx b/src/view/com/composer/Composer.tsx
index 5807488393..fac08a7113 100644
--- a/src/view/com/composer/Composer.tsx
+++ b/src/view/com/composer/Composer.tsx
@@ -134,8 +134,8 @@ export const ComposePost = observer(function ComposePost({
   // See https://github.com/bluesky-social/social-app/pull/4399
   const {setEnabled} = useKeyboardContext()
   React.useEffect(() => {
+    if (!isAndroid) return
     setEnabled(false)
-
     return () => {
       setEnabled(true)
     }
@@ -402,6 +402,37 @@ export const ComposePost = observer(function ComposePost({
     bottomBarAnimatedStyle,
   } = useAnimatedBorders()
 
+  // Backup focus on android, if the keyboard *still* refuses to show
+  useEffect(() => {
+    if (!isAndroid) return
+    if (!isModalReady) return
+
+    function tryFocus() {
+      if (!Keyboard.isVisible()) {
+        textInput.current?.blur()
+        textInput.current?.focus()
+      }
+    }
+
+    tryFocus()
+    // Retry with enough gap to avoid interrupting the previous attempt.
+    // Unfortunately we don't know which attempt will succeed.
+    const retryInterval = setInterval(tryFocus, 500)
+
+    function stopTrying() {
+      clearInterval(retryInterval)
+    }
+
+    // Deactivate this fallback as soon as anything happens.
+    const sub1 = Keyboard.addListener('keyboardDidShow', stopTrying)
+    const sub2 = Keyboard.addListener('keyboardDidHide', stopTrying)
+    return () => {
+      clearInterval(retryInterval)
+      sub1.remove()
+      sub2.remove()
+    }
+  }, [isModalReady])
+
   return (
     <>
       <KeyboardAvoidingView