disable changing the system background

src/alf/util/useColorModeTheme.ts

@@ -2,8 +2,8 @@ import React from 'react'
 import {ColorSchemeName, useColorScheme} from 'react-native'
 import * as SystemUI from 'expo-system-ui'
 
-import {isWeb} from 'platform/detection'
+import {isIOS, isWeb} from '#/platform/detection'
-import {useThemePrefs} from 'state/shell'
+import {useThemePrefs} from '#/state/shell'
 import {dark, dim, light} from '#/alf/themes'
 import {ThemeName} from '#/alf/types'
 
@@ -12,7 +12,9 @@ export function useColorModeTheme(): ThemeName {
 
   React.useLayoutEffect(() => {
     updateDocument(theme)
+    if (!isIOS) {
       SystemUI.setBackgroundColorAsync(getBackgroundColor(theme))
+    }
   }, [theme])
 
   return theme

src/view/shell/Composer.ios.tsx

@@ -1,11 +1,9 @@
-import React, {useLayoutEffect} from 'react'
+import React from 'react'
 import {Modal, View} from 'react-native'
 import {StatusBar} from 'expo-status-bar'
-import * as SystemUI from 'expo-system-ui'
 
 import {useComposerState} from '#/state/shell/composer'
 import {atoms as a, useTheme} from '#/alf'
-import {getBackgroundColor, useThemeName} from '#/alf/util/useColorModeTheme'
 import {ComposePost, useComposerCancelRef} from '../com/composer/Composer'
 
 export function Composer({}: {winHeight: number}) {
@@ -24,7 +22,6 @@ export function Composer({}: {winHeight: number}) {
       animationType="slide"
       onRequestClose={() => ref.current?.onPressCancel()}>
       <View style={[t.atoms.bg, a.flex_1]}>
-        <Providers open={open}>
         <ComposePost
           cancelRef={ref}
           replyTo={state?.replyTo}
@@ -36,44 +33,8 @@ export function Composer({}: {winHeight: number}) {
           imageUris={state?.imageUris}
           videoUri={state?.videoUri}
         />
-        </Providers>
+        {open ? <StatusBar style="light" animated /> : null}
       </View>
     </Modal>
   )
 }
-
-function Providers({
-  children,
-  open,
-}: {
-  children: React.ReactNode
-  open: boolean
-}) {
-  // on iOS, it's a native formSheet. We use FullWindowOverlay to make
-  // the dialogs appear over it
-  return (
-    <>
-      {children}
-      <IOSModalBackground active={open} />
-    </>
-  )
-}
-
-// Generally, the backdrop of the app is the theme color, but when this is open
-// we want it to be black due to the modal being a form sheet.
-function IOSModalBackground({active}: {active: boolean}) {
-  const theme = useThemeName()
-
-  useLayoutEffect(() => {
-    SystemUI.setBackgroundColorAsync('black')
-
-    return () => {
-      SystemUI.setBackgroundColorAsync(getBackgroundColor(theme))
-    }
-  }, [theme])
-
-  // Set the status bar to light - however, only if the modal is active
-  // If we rely on this component being mounted to set this,
-  // there'll be a delay before it switches back to default.
-  return active ? <StatusBar style="light" animated /> : null
-}