public interface IOrientationProvider
| 限定符和类型 | 方法和说明 | 
|---|---|
| float | getLastKnownOrientation()获得上一次的方位 | 
| boolean | startOrientationProvider(IOrientationConsumer orientationConsumer) | 
| void | stopOrientationProvider()结束方向服务 | 
boolean startOrientationProvider(IOrientationConsumer orientationConsumer)
orientationConsumer - void stopOrientationProvider()
float getLastKnownOrientation()