From 03d7d3c5c37438fd2749cba7951d19977ada47e9 Mon Sep 17 00:00:00 2001
From: Developer <dev@bilibili-app.local>
Date: Tue, 10 Mar 2026 20:18:47 +0800
Subject: [PATCH] fix: quality switch not updating video playback

- Use qn-specific MPD filename (bili_dash_{qn}.mpd) so each quality
  produces a distinct URI that triggers react-native-video to reload
- Add key={resolvedUrl} on <Video> to force remount on source change
---
 components/NativeVideoPlayer.tsx | 1 +
 utils/dash.ts                    | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/components/NativeVideoPlayer.tsx b/components/NativeVideoPlayer.tsx
index 30e9b92..a836e79 100644
--- a/components/NativeVideoPlayer.tsx
+++ b/components/NativeVideoPlayer.tsx
@@ -57,6 +57,7 @@ export function NativeVideoPlayer({
     <View style={[styles.container, style]}>
       {resolvedUrl ? (
         <Video
+          key={resolvedUrl}
           ref={videoRef}
           source={isDash
             ? { uri: resolvedUrl, type: 'mpd', headers: BILIBILI_HEADERS }
diff --git a/utils/dash.ts b/utils/dash.ts
index a610629..a0940cc 100644
--- a/utils/dash.ts
+++ b/utils/dash.ts
@@ -7,7 +7,7 @@ import type { PlayUrlResponse } from '../services/types';
  */
 export async function buildDashMpdUri(playData: PlayUrlResponse, qn: number): Promise<string> {
   const xml = buildMpdXml(playData, qn);
-  const path = `${FileSystem.cacheDirectory}bili_dash.mpd`;
+  const path = `${FileSystem.cacheDirectory}bili_dash_${qn}.mpd`;
   await FileSystem.writeAsStringAsync(path, xml, { encoding: FileSystem.EncodingType.UTF8 });
   return path;
 }