android 传感器

Android中支持的几种传感器：


Sensor.TYPE_ACCELEROMETER：加速度传感器。
Sensor.TYPE_GYROSCOPE：陀螺仪传感器。
Sensor.TYPE_LIGHT：亮度传感器。
Sensor.TYPE_MAGNETIC_FIELD：地磁传感器。
Sensor.TYPE_ORIENTATION：方向传感器。
Sensor.TYPE_PRESSURE：压力传感器。
Sensor.TYPE_PROXIMITY：近程传感器。
Sensor.TYPE_TEMPERATURE：温度传感器。

使用传感器最关键的一些知识是：SensorManager是所有传感器的一个综合管理类，包括了传感器的种类、采样率、精准度等。我们可以通过getSystemService方法来取得一个SensorManager对象。使用传感器时，需要通过registerListener函数注册传感器，使用完后需要通过unregisterListener取消注册。
百闻不如一见，还是直接讲代码：
新建一个Sensors的工程，创建一个Sensors.java，内容如下：

 package me.sigma.sensors;

import android.app.Activity;
import android.hardware.SensorListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;

public class Sensors extends Activity {
    TextView myTextView1;//t
    //gen
    TextView myTextView2;//x
    TextView myTextView3;//y
    TextView myTextView4;//z
    //acc
    TextView myTextView5;//x
    TextView myTextView6;//y
    TextView myTextView7;//z
   //ori
    TextView myTextView8;//x
    TextView myTextView9;//y
    TextView myTextView10;//z
    //Light
    TextView myTextView11;//z
    SensorManager  mySensorManager;//
    @Override 
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        myTextView1 = (TextView) findViewById(R.id.myTextView1);
        myTextView2 = (TextView) findViewById(R.id.myTextView2);
        myTextView3 = (TextView) findViewById(R.id.myTextView3);
        myTextView4 = (TextView) findViewById(R.id.myTextView4);
        myTextView5 = (TextView) findViewById(R.id.myTextView5);
        myTextView6 = (TextView) findViewById(R.id.myTextView6);
        myTextView7 = (TextView) findViewById(R.id.myTextView7);
        myTextView8 = (TextView) findViewById(R.id.myTextView8);
        myTextView9 = (TextView) findViewById(R.id.myTextView9);
        myTextView10 = (TextView) findViewById(R.id.myTextView10);
        myTextView11 = (TextView) findViewById(R.id.myTextView11);
        mySensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);


    }


    private SensorListener mySensorListener = new SensorListener(){

        @Override
        public void onAccuracyChanged(int sensor, int accuracy) {}  


        @Override
        public void onSensorChanged(int sensor, float[] values) {       

            if(sensor == SensorManager.SENSOR_TEMPERATURE){
                myTextView1.setText("Current Temprature："+values[0]);   

            }else if(sensor == SensorManager.SENSOR_MAGNETIC_FIELD){

                myTextView2.setText("Current Magnetic x："+values[0]);
                myTextView3.setText("Current Magnetic y："+values[1]);
                myTextView4.setText("Current Magnetic z："+values[2]);

            }else if(sensor == SensorManager.SENSOR_ACCELEROMETER){

                myTextView5.setText("Current Accelero x："+values[0]);

                myTextView6.setText("Current Accelero y："+values[1]);

                myTextView7.setText("Current Accelero z："+values[2]);

            }else if(sensor == SensorManager.SENSOR_ORIENTATION){


                myTextView8.setText("Current Oraenttation x："+values[0]);


                myTextView9.setText("Current Oraenttation y："+values[1]);


                myTextView10.setText("Current Oraenttation z："+values[2]);


            }else if(sensor == SensorManager.SENSOR_LIGHT){


                myTextView11.setText("Current Oraenttation x："+values[0]);


            }


        }


    };


    @Override


    protected void onResume() {


        mySensorManager.registerListener(


                mySensorListener, 


                SensorManager.SENSOR_TEMPERATURE | 


                SensorManager.SENSOR_MAGNETIC_FIELD | 


                SensorManager.SENSOR_ACCELEROMETER | 


                SensorManager.SENSOR_LIGHT |


                        SensorManager.SENSOR_ORIENTATION,


                SensorManager.SENSOR_DELAY_UI


                );


        super.onResume();


    }   


    @Override


    protected void onPause() {


        mySensorManager.unregisterListener(mySensorListener);


        super.onPause();


    }


} 

更改res/layout/下面的main.xml,为如下内容：

 <?xml version="1.0" encoding="utf-8"?>       


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"


    android:orientation="vertical"


    android:layout_width="fill_parent"


    android:layout_height="fill_parent">


    <TextView  


        android:id="@+id/title"


        android:gravity="center_horizontal"


        android:textSize="20px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/title"/>


    <TextView  


        android:id="@+id/myTextView1"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView1"/>    


        <TextView  


        android:id="@+id/myTextView2"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView2"/>


        <TextView  


        android:id="@+id/myTextView3"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView3"/>


        <TextView


        android:id="@+id/myTextView4"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView4"/> 


        <TextView  


        android:id="@+id/myTextView5"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView5"/>


        <TextView  


        android:id="@+id/myTextView6"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView6"/>


        <TextView  


        android:id="@+id/myTextView7"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView7"/>


        <TextView  


        android:id="@+id/myTextView8"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView8"/> 


        <TextView  


        android:id="@+id/myTextView9"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView9"/> 


        <TextView  


        android:id="@+id/myTextView10"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView10"/>    


        <TextView  


        android:id="@+id/myTextView11"


        android:textSize="18px"


        android:layout_width="fill_parent" 


        android:layout_height="wrap_content" 


        android:text="@string/myTextView11"/> 


</LinearLayout>

更改res/values/strings.xml为如下内容：

 <?xml version="1.0" encoding="utf-8"?>


<resources>


    <string name="hello">templator!</string>


    <string name="app_name">templator</string>


    <string name="title">Sigma Sensors</string>


    <string name="myTextView1">Current Temprature：</string>


    <string name="myTextView2">Current Magnetic x：</string>


    <string name="myTextView3">Current Magnetic y：</string>


    <string name="myTextView4">Current Magnetic z：</string>


    <string name="myTextView5">Current Accelero x：</string>


    <string name="myTextView6">Current Accelero y：</string>


    <string name="myTextView7">Current Accelero z：</string>


    <string name="myTextView8">Current Oraenttation x：</string>


    <string name="myTextView9">Current Oraenttation y：</string>


    <string name="myTextView10">Current Oraenttation z：</string>


    <string name="myTextView11">Current Light：</string>


</resources>