当我尝试切换视图时，iOS 9现在更新错误

Question

所以我在这样的视图中切换到一个新视图

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{

SKTransition *doors = [SKTransition fadeWithColor:[UIColor whiteColor] duration:.5];
GameScene *next = [[GameScene alloc]initWithSize:self.size];
next.highScore = self.highScore;

[self.view presentScene:next transition:doors];
self.timer.invalidate;

}

Xcode现在给我这个错误

  

＆＃34; CAEAGLLayer：0x7b1acc80：调用-display无效。＆＃34;

有什么想法在这里发生？