ANDROID_MARS学习笔记_S05_003_传感器采样率及属性

最新推荐文章于 2021-05-26 01:36:11 发布

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最新推荐文章于 2021-05-26 01:36:11 发布

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文章标签：移动开发

原文链接：http://www.cnblogs.com/shamgod/p/5207441.html

本文介绍了一个简单的Android应用程序，该程序利用光照传感器获取环境光线强度，并展示了如何通过Android API注册监听器来实时读取传感器数据。文章包括了完整的代码示例，演示了如何获取传感器名称、供应商、分辨率和功耗等信息。

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