1.传感器的采样率 
1 SENSOR_DELAY_NORMAL(200000微秒)
2 SENSOR_DELAY_UI(60000微秒)
3 SENSOR_DELAY_GAME(20000微秒)
4 SENSOR_DELAY_FASTEST(0)微秒


设置传感器的原则:
尽量使用比较低的传感器采样率,这样系统的负荷比较小,同时可以省电

2.传感器的属性
1)传感器的名称
2)传感器制造商
3)传感器gonglv
4)传感器的resulotion;
MainActivity: 1 package org.gaolei.sensor03;
 2 
 3 import android.app.Activity;
 4 import android.content.Context;
 5 import android.hardware.Sensor;
 6 import android.hardware.SensorEvent;
 7 import android.hardware.SensorEventListener;
 8 import android.hardware.SensorManager;
 9 import android.os.Bundle;
10 
11 public class MainActivity extends Activity {
12     private SensorManager sensorManager;
13 
14     @Override
15     public void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.main);
18 
19         sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
20         Sensor lightSensor = sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);
21 
22         sensorManager.registerListener(new SensorEventListener() {
23 
24             @Override
25             public void onSensorChanged(SensorEvent event) {
26                 String sensorName = event.sensor.getName();
27                 String sensorVendor = event.sensor.getVendor();
28                 float resolution = event.sensor.getResolution();
29                 float power = event.sensor.getPower();
30                 double timestamp = event.timestamp;
31 
32                 System.out.println("sensor name--->" + sensorName);
33                 System.out.println("sensor vendor--->" + sensorVendor);
34                 System.out.println("sensor resolution--->" + resolution);
35                 System.out.println("sensor power--->" + power);
36                 System.out.println("sensor timestamp--->" + timestamp);
37 
38             }
39 
40             @Override
41             public void onAccuracyChanged(Sensor sensor, int accuracy) {
42             }
43         }, lightSensor, SensorManager.SENSOR_DELAY_GAME);
44     }
45 }