小编Jai*_*ngh的帖子

SKAction.group([moveToAction, SKAction.fadeAlphaTo(1.0, duration: 0.2)]), completion:nil)

}

runAction(SKAction.waitForDuration(0.2), completion: completion)

当我这样做时,我收到错误:

nil与预期的参数类型'() - > Void'不兼容