Android SDK中都没有这些类。正如其他人所说，在 TimePickerDialog =nofollow>不同的包。 Android源代码，欢迎您尝试使用它。

Neither of those classes exist in the Android SDK. There is a TimePickerDialog, as others have noted, in a different package. There is a RadialPickerLayout in the Android source code, and you are welcome to try to use it.

真的，你应该和谁编写这个Android项目交谈，并询问他们正在计划从哪里获得这些课程。

Really, you should be talking to whoever wrote this Android project and asking them where they were planning on getting those classes from.