fix tizen related issues

cocos/ui/UIVideoPlayer-tizen.cpp

@@ -298,7 +298,6 @@ void VideoPlayer::play()
         {
             player_set_display_mode(impl->_player, PLAYER_DISPLAY_MODE_FULL_SCREEN);
         }
-        player_set_display_visible(impl->_player, true);
 
         player_set_completed_cb(impl->_player, _player_completed_cb, this);
         player_set_interrupted_cb(impl->_player, _player_interrupted_cb, this);
@@ -309,6 +308,7 @@ void VideoPlayer::play()
         {
             this->onPlayEvent((int)VideoPlayer::EventType::PLAYING);
         }
+        this->setVisible(true);
     }
 }
 
@@ -368,23 +368,32 @@ bool VideoPlayer::isPlaying() const
 void VideoPlayer::onEnter()
 {
     Widget::onEnter();
-    this->setVisible(false);
+    if (isVisible())
+    {
+        _VideoPlayerTizen* impl = (_VideoPlayerTizen*)_videoView;
+        player_set_display_visible(impl->_player, true);
+    }
 }
 
 void VideoPlayer::onExit()
 {
     Widget::onExit();
-    this->setVisible(true);
+    _VideoPlayerTizen* impl = (_VideoPlayerTizen*)_videoView;
+    player_set_display_visible(impl->_player, false);
 }
 
 void VideoPlayer::setVisible(bool visible)
 {
     cocos2d::ui::Widget::setVisible(visible);
-
-    if (! _videoURL.empty())
-    {
     _VideoPlayerTizen* impl = (_VideoPlayerTizen*)_videoView;
-        player_set_display_visible(impl->_player, visible);
+
+    if (!visible)
+    {
+        player_set_display_visible(impl->_player, false);
+    }
+    else if(isRunning())
+    {
+        player_set_display_visible(impl->_player, true);
     }
 }
 

tests/cpp-tests/Classes/NodeTest/NodeTest.cpp

@@ -1262,6 +1262,11 @@ void NodeNameTest::onEnter()
     this->scheduleOnce(CC_CALLBACK_1(NodeNameTest::test, this), 0.05f, "test_key");
 }
 
+void NodeNameTest::onExit()
+{
+    TestCocosNodeDemo::onExit();
+}
+
 void NodeNameTest::test(float dt)
 {
     auto parent = Node::create();

tests/cpp-tests/Classes/NodeTest/NodeTest.h

@@ -325,6 +325,7 @@ public:
     virtual std::string subtitle() const override;
     
     virtual void onEnter() override;
+    virtual void onExit() override;
 
     void test(float dt);
 };