From b700eeb32cd0a84233b7a270bdf4b04cc2d12bc5 Mon Sep 17 00:00:00 2001
From: Robin Chou <chourobin@gmail.com>
Date: Sat, 30 Apr 2016 17:22:11 -0400
Subject: [PATCH] Use `ASPerformOnMainThread` helper. `-fetchData`
 improvements.

---
 AsyncDisplayKit/ASVideoNode.mm | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/AsyncDisplayKit/ASVideoNode.mm b/AsyncDisplayKit/ASVideoNode.mm
index 2df9dcf025..8db2d1d13b 100644
--- a/AsyncDisplayKit/ASVideoNode.mm
+++ b/AsyncDisplayKit/ASVideoNode.mm
@@ -106,7 +106,7 @@ static NSString * const kStatus = @"status";
   return nil;
 }
 
-- (void)prepareToPlayAsset:(AVAsset *)asset withKeys:(NSArray *)requestedKeys
+- (void)prepareToPlayAsset:(AVAsset *)asset withKeys:(NSArray<NSString *> *)requestedKeys
 {
   for (NSString *key in requestedKeys) {
     NSError *error = nil;
@@ -122,7 +122,7 @@ static NSString * const kStatus = @"status";
   }
     
   AVPlayerItem *playerItem = [self constructPlayerItem];
-  self.currentItem = playerItem;
+  [self setCurrentItem:playerItem];
   
   if (_player != nil) {
     [_player replaceCurrentItemWithPlayerItem:playerItem];
@@ -289,14 +289,13 @@ static NSString * const kStatus = @"status";
   {
     ASDN::MutexLocker l(_videoLock);
 
-    if (_asset != nil) {
-      NSArray *requestedKeys = @[ @"playable" ];
-      [_asset loadValuesAsynchronouslyForKeys:requestedKeys completionHandler:^{
-          dispatch_async(dispatch_get_main_queue(), ^{
-            [self prepareToPlayAsset:_asset withKeys:requestedKeys];
-          });
-      }];
-    }
+    AVAsset *asset = self.asset;
+    NSArray<NSString *> *requestedKeys = @[ @"playable" ];
+    [asset loadValuesAsynchronouslyForKeys:requestedKeys completionHandler:^{
+      ASPerformBlockOnMainThread(^{
+        [self prepareToPlayAsset:asset withKeys:requestedKeys];
+      });
+    }];
   }
 }