diff --git a/library/src/main/java/cn/jzvd/JZMediaInterface.java b/library/src/main/java/cn/jzvd/JZMediaInterface.java
index a8202b29..8e070678 100644
--- a/library/src/main/java/cn/jzvd/JZMediaInterface.java
+++ b/library/src/main/java/cn/jzvd/JZMediaInterface.java
@@ -44,4 +44,10 @@ public JZMediaInterface(Jzvd jzvd) {
     public abstract void setSpeed(float speed);
 
     public abstract void setSurface(Surface surface);
+
+    public void runOnUiThread(Runnable runnable) {
+        if (handler != null) {
+            handler.post(runnable);
+        }
+    }
 }
diff --git a/library/src/main/java/cn/jzvd/Jzvd.java b/library/src/main/java/cn/jzvd/Jzvd.java
index 6ee00c7e..6dcc3449 100644
--- a/library/src/main/java/cn/jzvd/Jzvd.java
+++ b/library/src/main/java/cn/jzvd/Jzvd.java
@@ -73,18 +73,20 @@ public void onAudioFocusChange(int focusChange) {
                 case AudioManager.AUDIOFOCUS_GAIN:
                     break;
                 case AudioManager.AUDIOFOCUS_LOSS:
-                    CURRENT_JZVD.mediaInterface.handler.post(Jzvd::releaseAllVideos);
+                    CURRENT_JZVD.mediaInterface.runOnUiThread(Jzvd::releaseAllVideos);
                     Log.d(TAG, "AUDIOFOCUS_LOSS [" + this.hashCode() + "]");
                     break;
                 case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT:
-                    try {
-                        Jzvd player = CURRENT_JZVD;
-                        if (player != null && player.state == Jzvd.STATE_PLAYING) {
-                            player.startButton.performClick();
+                    CURRENT_JZVD.mediaInterface.runOnUiThread(() -> {
+                        try {
+                            Jzvd player = CURRENT_JZVD;
+                            if (player != null && player.state == Jzvd.STATE_PLAYING) {
+                                player.startButton.performClick();
+                            }
+                        } catch (IllegalStateException e) {
+                            e.printStackTrace();
                         }
-                    } catch (IllegalStateException e) {
-                        e.printStackTrace();
-                    }
+                    });
                     Log.d(TAG, "AUDIOFOCUS_LOSS_TRANSIENT [" + this.hashCode() + "]");
                     break;
                 case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK: