Logcat说“未知窗口类型”

Question

我正在尝试调试我的android应用程序，但是我的logcat中有99％包含以下消息：“未知窗口类型：...”我的logcat中有成千上万个这样的消息，我不知道为什么。

06-14 15:34:27.022 2719-2831/? E/WindowManager: Unknown window type: 2014
06-14 15:34:27.022 2719-2831/? E/WindowManager: Unknown window type: 2000
06-14 15:34:27.022 2719-2831/? E/WindowManager: Unknown window type: 2008
06-14 15:34:27.022 2719-2831/? E/WindowManager: Unknown window type: 2000
06-14 15:34:27.022 2719-2831/? E/WindowManager: Unknown window type: 2033
06-14 15:34:27.022 2719-2831/? E/WindowManager: Unknown window type: 2000
06-14 15:34:27.022 2719-2831/? E/WindowManager: Unknown window type: 2011
06-14 15:34:27.022 2719-2831/? E/WindowManager: Unknown window type: 2000

这是什么意思，为什么出现那么多？