fix #4211

Refactor: Optimize audio focus management
Refined the audio focus handling logic. The player now checks if it is actively playing before pausing on audio focus loss. This prevents inactive players from incorrectly responding to focus changes.

Additionally, audio focus is now requested when playback starts and properly released when the view is detached or videos are released. Also includes miscellaneous code cleanup and formatting.

Author: CarGuo

gsyVideoPlayer-java/src/main/java/com/shuyu/gsyvideoplayer/video/base/GSYVideoView.java

@@ -390,8 +390,11 @@ public void run() {
                 if (GSYVideoView.this.mReleaseWhenLossAudio) {
                     GSYVideoView.this.releaseVideos();
                 } else {
-                    if (getGSYVideoManager().listener() != null)
-                        getGSYVideoManager().listener().onVideoPause();
+                    // 确保只有当前活跃的播放器才响应音频焦点变化
+                    GSYMediaPlayerListener listener = getGSYVideoManager().listener();
+                    if (listener != null && getGSYVideoManager().isPlaying()) {
+                        listener.onVideoPause();
+                    }
                 }
             }
         });
@@ -403,8 +406,10 @@ public void run() {
     @Override
     public void onAudioFocusLossTransient() {
         try {
-            if (getGSYVideoManager().listener() != null) {
-                getGSYVideoManager().listener().onVideoPause();
+            // 确保只有当前活跃的播放器才响应音频焦点变化
+            GSYMediaPlayerListener listener = getGSYVideoManager().listener();
+            if (listener != null && getGSYVideoManager().isPlaying()) {
+                listener.onVideoPause();
             }
         } catch (Exception var2) {
             var2.printStackTrace();