光线感应，加速感应，内置罗盘及陀螺仪。
Light sensor, accelerometer, compass (magnetometer) and gyroscope.
可以自动感应周边磁场，罗盘会自动旋转到相应的度数。
Automatically sensing the surrounding magnetic field, the compass will automatically rotate to the corresponding degrees.
第14章讲述了传感器的API，演示了如何使用罗盘、感应器和其他能让你的应用与所处环境互相产生影响的传感器硬件。
Chapter 14 examines the sensor APIs, demonstrating how to use the compass, accelerometers, and other hardware sensors to let your application react to its environment.
第14章讲述了传感器的API，演示了如何使用罗盘、感应器和其他能让你的应用与所处环境互相产生影响的传感器硬件。
Chapter 14 examines the sensor APIs, demonstrating how to use the compass, accelerometers, and other hardware sensors to let your application react to its environment.
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