Class _NSZombie_xxxxxxx 都实现了 ??和?

Class _NSZombie_xxxxxxx is implemented in both ?? and?

当我们导航到创建 GMSMapView 的视图控制器时,我们刚刚开始看到这些消息出现在 Xcode 的调试区域(控制台)中。一切似乎都运行良好,我们只是不喜欢日志中的此类消息。我们不会每隔 运行 就看到它们,只是足以引起注意。这有什么好担心的吗?

objc[15874]: Class _NSZombie_GMSx_PBString is implemented in both ?? and ??. One of the two will be used. Which one is undefined.
objc[15874]: Class _NSZombie_GMSx_PBString is implemented in both ?? and ??. One of the two will be used. Which one is undefined.
objc[15874]: Class _NSZombie_GMSx_PBString is implemented in both ?? and ??. One of the two will be used. Which one is undefined.
objc[15874]: Class _NSZombie_GMSx_PBString is implemented in both ?? and ??. One of the two will be used. Which one is undefined.
objc[15874]: Class _NSZombie_GMSx_PBString is implemented in both ?? and ??. One of the two will be used. Which one is undefined.
objc[15874]: Class _NSZombie_GMSx_GMMResourceResponseProto_Response is implemented in both ?? and ??. One of the two will be used. Which one is undefined.
objc[15874]: Class _NSZombie_GMSx_GMMResourceResponseProto is implemented in both ?? and ??. One of the two will be used. Which one is undefined.
objc[15874]: Class _NSZombie_GMSx_GMMResourceResponseProto is implemented in both ?? and ??. One of the two will be used. Which one is undefined.
objc[15874]: Class _NSZombie_GMSx_GMMResourceResponseProto is implemented in both ?? and ??. One of the two will be used. Which one is undefined.

如有任何帮助,我们将不胜感激!

NSZombies 已开启。转到产品 -> 方案 -> 编辑方案 (CMD+SHIFT+.) 并在 运行 -> 诊断下取消选中 "Enable Zombies"。